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Space Science Reviews

, 216:6 | Cite as

Origin and Evolution of Cometary Nuclei

  • Paul Weissman
  • Alessandro Morbidelli
  • Björn Davidsson
  • Jürgen Blum
Article
  • 18 Downloads
Part of the following topical collections:
  1. Comets: Post 67P / Churyumov-Gerasimenko Perspectives

Abstract

One of the key goals of the Rosetta mission was to understand how, where and when comets formed in our solar system. There are two major hypotheses for the origin of comets, both pre-Rosetta: (1) hierarchical accretion of dust and ice grains in the Solar Nebula and (2) the growth of pebbles, which are then brought together by streaming instabilities in the Solar Nebula to form larger bodies. Rosetta provided a wealth of new information on comet nuclei and confirmed many past ideas on comets, e.g., high volatile content, lack of aqueous alteration of grains, and the low bulk density of the nucleus. Rosetta also provided new data on the nature of cometary activity, the active geology on the nucleus surface and the interior structure and bulk density of the nucleus. Supporters of the above-mentioned origin hypotheses each find confirmation of their ideas in the Rosetta results. But the question of which hypothesis is preferred, or if there are other, better hypotheses that could be invoked, could not be answered. Theoretical studies suggest that comet nuclei were collisionally processed in the Primordial Disk though it is not clear that the nuclei we see today display the effects of that process. Both theoretical and observational studies suggest that the major end-states for cometary nuclei are dynamical ejection, random disruption and disintegration, and/or evolution of nuclei to inactive, asteroidal-appearing objects. Rosetta has provided us with many new insights that will help to guide future cometary missions, observations, experiments and theoretical investigations that will lead to answers to the fundamental questions with regard to cometary origin.

Keywords

Comet, origin Hierarchical accretion Agglomeration Pebbles Streaming instabilities Evolution End-states Primordial disk Collisional evolution 

Notes

Acknowledgements

We thank the two anonymous reviewers for their helpful and constructive comments and suggestions. PRW thanks the U.S. Social Security Administration for financial support while writing this paper. BD’s part of this paper was performed at the Jet Propulsion Laboratory under contract with NASA. JB thanks the Deutsche Forschungsgemeinschaft (DFG) and the Deutsches Zentrum für Luft- und Raumfahrt (DLR) for continuous support.

References

  1. C.P. Abod, J.B. Simon, R. Li, P.J. Armitage, A.N. Youdin, K.A. Kretke, The mass and size distribution of planetesimals formed by the streaming instability. II. The effect of the radial gas pressure gradient. Astrophys. J. 883(2), 192 (2018). http://adsabs.harvard.edu/abs/2018arXiv181010018A ADSCrossRefGoogle Scholar
  2. I. Adachi, C. Hayashi, K. Nakazawa, The gas drag effect on the elliptic motion of a solid body in the primordial solar nebula. Prog. Theor. Phys. 56(6), 1756–1771 (1976) ADSCrossRefGoogle Scholar
  3. M.F. A’Hearn, R.C. Millis, D.G. Schleicher, D.J. Osip, P.V. Birch, The ensemble properties of comets: results from narrowband photometry of 85 comets. Icarus 118, 223–270 (1995) ADSCrossRefGoogle Scholar
  4. M.F. A’Hearn, M.J.S. Belton, W.A. Delamere, L.M. Feaga, D. Hampton, J. Kissel, K.P. Klaasen, L.A. McFadden, K.J. Meech, H.J. Melosh, P.H. Schultz, J.M. Sunshine, P.C. Thomas, J. Veverka, D.D. Wellnitz, D.K. Yeomans, S. Besse, D. Bodewits, T.J. Bowling, B.T. Carcich, S.M. Collins, T.L. Farnham, O. Groussin, B. Hermalyn, M.S. Kelley, M.S. Kelley, J.-Y. Li, D.J. Lindler, C.M. Lisse, S.A. McLaughlin, F. Merlin, S. Protopapa, J.E. Richardson, J.L. Williams, EPOXI at comet Hartley 2. Science 332, 1396–1400 (2011) ADSCrossRefGoogle Scholar
  5. K. Altwegg, H. Balsiger, A. Bar-Nun, J.-J. Berthelier, A. Bieler, P. Bochsler, C. Briois, U. Calmonte, M.R. Combi, H. Cottin, J. De Keyser, F. Dhooghe, B. Fiethe, S.A. Fuselier, S. Gasc, T.I. Gombosi, K.C. Hansen, M. Haessig, A. Jäckel, E. Kopp, A. Korth, L. Le Roy, U. Mall, B. Marty, O. Mousis, T. Owen, H. Reme, M. Rubin, T. Semon, C.-Y. Tzou, J.H. Waite, P. Wurz, Prebiotic chemicals—amino acids and phosphorus—in the coma of comet 67P/Churyumov-Gerasimenko. Sci. Adv. 2, e1600285 (2016) ADSCrossRefGoogle Scholar
  6. P. Andre, T. Montmerle, From T Tauri stars to protostars: circumstellar material and young stellar objects in the Ophiuchi cloud. Astron. J. 420, 837–862 (1994) ADSCrossRefGoogle Scholar
  7. E. Asphaug, W. Benz, Density of comet Shoemaker-Levy 9 deduced by modeling of the parent rubble pile. Nature 370, 120–124 (1994) ADSCrossRefGoogle Scholar
  8. E. Asphaug, W. Benz, Size, density and structure of comet Shoemaker-Levy 9 inferred from the physics of tidal breakup. Icarus 121, 225–248 (1996) ADSCrossRefGoogle Scholar
  9. M. Asplund, N. Grevesse, A.J. Sauval, P. Scott, The chemical composition of the Sun. Annu. Rev. Astron. Astrophys. 47, 481–522 (2009) ADSCrossRefGoogle Scholar
  10. N. Attree, O. Groussin, L. Jorda, D. Nébouy, N. Thomas, Y. Brouet, E. Kührt, F. Preusker, F. Scholten, J. Knollenberg, P. Hartogh, H. Sierks, C. Barbieri, P. Lamy, R. Rodrigo, D. Koschny, H. Rickman, H.U. Keller, M.F. A’Hearn, A.-T. Auger, M.A. Barucci, J.-L. Bertaux, I. Bertini, D. Bodewits, S. Boudreault, G. Cremonese, V. Da Deppo, B. Davidsson, S. Debei, M. De Cecco, J. Deller, M.R. El-Maarry, S. Fornasier, M. Fulle, P.J. Gutiérrez, C. Güttler, S. Hviid, W.-H. Ip, G. Kovacs, J.R. Kramm, M. Küppers, L.M. Lara, M. Lazzarin, J.J. Lopez Moreno, S. Lowry, S. Marchi, F. Marzari, S. Mottola, G. Naletto, N. Oklay, M. Pajola, I. Toth, C. Tubiana, J.-B. Vincent, X. Shi, Tensile strength of 67P/Churyumov-Gerasimenko nucleus material from overhangs. Astron. Astrophys. 611, A33 (2018) CrossRefGoogle Scholar
  11. A.-T. Auger, O. Groussin, L. Jorda, S. Bouley, R. Gaskell, P.L. Lamy, C. Capanna, N. Thomas, A. Pommerol, H. Sierks, C. Barbieri, R. Rodrigo, D. Koschny, H. Rickman, H.U. Keller, J. Agarwal, M.F. A’Hearn, M.A. Barucci, J.-L. Bertaux, I. Bertini, G. Cremonese, V. Da Deppo, B. Davidsson, S. Debei, M. De Cecco, M.R. El-Maarry, S. Fornasier, M. Fulle, P.J. Gutierrez, C. Güttler, S. Hviid, W.-H. Ip, J. Knollenberg, J.-R. Kramm, E. Kührt, M. Küppers, F. La Forgia, L.M. Lara, M. Lazzarin, J.J. Lopez Moreno, S. Marchi, F. Marzari, M. Massironi, H. Michalik, G. Naletto, N. Oklay, M. Pajola, L. Sabau, C. Tubiana, J.-B. Vincent, K.-P. Wenzel, Geomorphology of the Imhotep region on comet 67P/Churyumov-Gerasimenko from OSIRIS observations. Astron. Astrophys. 583, A35 (2015) CrossRefGoogle Scholar
  12. A.-T. Auger, O. Groussin, L. Jorda, M.R. El-Maarry, S. Bouley, A. Sejourne, R. Gaskell, C. Capanna, B. Davidsson, S. Marchi, S. Höfner, P.L. Lamy, H. Sierks, C. Barbieri, R. Rodrigo, D. Koschny, H. Rickman, H.U. Keller, J. Agarwal, M.F. A’Hearn, M.A. Barucci, J.-L. Bertaux, I. Bertini, G. Cremonese, V. Da Deppo, S. Debei, M. De Cecco, S. Fornasier, M. Fulle, P.J. Gutierrez, C. Güttler, S. Hviid, W.-H. Ip, J. Knollenberg, J.-R. Kramm, E. Kührt, M. Küppers, L.M. Lara, M. Lazzarin, J.J. Lopez Moreno, F. Marzari, M. Massironi, H. Michalik, G. Naletto, N. Oklay, A. Pommerol, L. Sabau, N. Thomas, C. Tubiana, J.-B. Vincent, K.-P. Wenzel, Meter-scale thermal contraction crack polygons on the nucleus of comet 67P/Churyumov-Gerasimenko. Icarus 301, 173–188 (2018) ADSCrossRefGoogle Scholar
  13. M.J.S. Belton, The size-distribution of scattered disk TNOs from that of JFCs between 0.2 and 15 km effective radius. Icarus 231, 168–182 (2014) ADSCrossRefGoogle Scholar
  14. M.J.S. Belton, P. Thomas, J. Veverka, P. Schultz, M.F. A’Hearn, L. Feaga, T. Farnham, O. Groussin, J.-Y. Li, C. Lisse, L. McFadden, J. Sunshine, K.J. Meech, W.A. Delamere, J. Kissel, The internal structure of Jupiter family cometary nuclei from Deep Impact observations: the “talps” or “layered pile” model. Icarus 187, 332–344 (2007) ADSCrossRefGoogle Scholar
  15. M.S. Bentley, R. Schmied, T. Mannel, . co-authors, Aggregate dust particles at comet 67P/Churyumov-Gerasimenko. Nature 537, 73–75 (2016) ADSCrossRefGoogle Scholar
  16. D.A. Biesecker, P. Lamy, O.C. St. Cyr, A. Llebaria, R.A. Howard, Sungrazing comets discovered with the SOHO/LASCO coronagraphs 1996–1998. Icarus 157, 323–348 (2002) ADSCrossRefGoogle Scholar
  17. T. Birnstiel, L. Ricci, F. Trotta, C.P. Dullemond, A. Natta, L. Testi, C. Dominik, T. Henning, C.W. Ormel, A. Zsom, Testing the theory of grain growth and fragmentation by millimeter observations of protoplanetary disks. Astron. Astrophys. 516, L14 (2010) ADSCrossRefGoogle Scholar
  18. D. Bischoff, B. Gundlach, M. Neuhaus, J. Blum, Experiments on cometary activity: ejection of dust aggregates from an evaporating water–ice surface. Mon. Not. R. Astron. Soc. 483, 1202–1210 (2019) ADSCrossRefGoogle Scholar
  19. J. Blum, Dust agglomeration. Adv. Phys. 55, 881–947 (2006) ADSCrossRefGoogle Scholar
  20. J. Blum, Dust evolution in protoplanetary discs and the formation of planetesimals. What have we learned from laboratory experiments? Space Sci. Rev. 214, 52 (2018) ADSCrossRefGoogle Scholar
  21. J. Blum, G. Wurm, The growth mechanisms of macroscopic bodies in protoplanetary disks. Annu. Rev. Astron. Astrophys. 46, 21–56 (2008) ADSCrossRefGoogle Scholar
  22. J. Blum, G. Wurm, S. Kempf, T. Poppe, H. Klahr, T. Kozasa, M. Rott, T. Henning, J. Dorschner, R. Schräpler, H.U. Keller, W.J. Markiewicz, I. Mann, B.A. Gustafson, F. Giovane, D. Neuhaus, H. Fechtig, E. Grün, B. Feuerbacher, H. Kochan, L. Ratke, A. El Goresy, G. Morfill, S.J. Weidenschilling, G. Schwehm, K. Metzler, W.-H. Ip, Growth and form of planetary seedlings: results from a microgravity aggregation experiment. Phys. Rev. Lett. 85, 2426–2429 (2000) ADSCrossRefGoogle Scholar
  23. J. Blum, B. Gundlach, S. Mühle, J.M. Trigo-Rodriguez, Comets formed in solar nebula instabilities!—An experimental and modeling attempt to relate the activity of comets to their formation process. Icarus 235, 156–169 (2014) ADSCrossRefGoogle Scholar
  24. J. Blum, B. Gundlach, S. Mühle, J.M. Trigo-Rodriguez, Corrigendum to “Comets formed in solar-nebula instabilities!—An experimental and modeling attempt to relate the activity of comets to their formation process” [Icarus 235 (2014) 156–169]. Icarus 248, 135–136 (2015) ADSCrossRefGoogle Scholar
  25. J. Blum, B. Gundlach, M. Krause, M. Fulle, A. Johansen, J. Agarwal, I. von Borstel, X. Shi, X. Hu, M.S. Bentley, F. Capaccioni, L. Colangeli, V. Della Corte, N. Fougere, S.F. Green, S. Ivanovski, T. Mannel, S. Merouane, A. Migliorini, A. Rotundi, R. Schmied, C. Snodgrass, Evidence for the formation of comet 67P/Churyumov- Gerasimenko through gravitational collapse of a bound clump of pebbles. Mon. Not. R. Astron. Soc. 469, S755–S773 (2017) CrossRefGoogle Scholar
  26. H. Boehnhardt, Split comets, in Comets II, ed. by M.C. Festou, U. Keller, H.A. Weaver (Univ. Arizona Press, Tucson, 2004), pp. 301–316 Google Scholar
  27. H. Boehnhardt, H.U. Kaeufl, P. Goudgrooij, J. Storm, J. Manfroid, K. Reinsch, The break-up of periodic comet Schwassmann-Wachmann 3: image documents from La Silla telescopes. Messenger 84, 26–29 (1996) ADSGoogle Scholar
  28. W.F. Bottke, A. Morbidelli, R. Jedicke, J.-M. Petit, H.F. Levison, P. Michel, T.S. Metcalfe, Debiased orbital and absolute magnitude distribution of the near-Earth objects. Icarus 156, 399–433 (2002) ADSCrossRefGoogle Scholar
  29. W.F. Bottke, D.D. Durda, D. Nesvorný, R. Jedicke, A. Morbidelli, D. Vokrouhlický, H. Levison, The fossilized size distribution of the main asteroid belt. Icarus 175, 111–140 (2005) ADSCrossRefGoogle Scholar
  30. R. Brasser, A. Morbidelli, Oort cloud and Scattered Disc formation during a late dynamical instability in the Solar System. Icarus 225, 40–49 (2013) ADSCrossRefGoogle Scholar
  31. F.G. Bridges, K.D. Supulver, D.N.C. Lin, R. Knight, M. Zafra, Energy loss and sticking mechanisms in particle aggregation in planetesimal formation. Icarus 123, 422–435 (1996) ADSCrossRefGoogle Scholar
  32. G.D. Brin, D.A. Mendis, Dust release and mantle development in comets. Astron. J. 229, 1095–1108 (1979) CrossRefGoogle Scholar
  33. J. Brisset, D. Heißelmann, S. Kothe, R. Weidling, J. Blum, Submillimetre-sized dust aggregate collision and growth properties. Experimental study of a multi-particle system on a suborbital rocket. Astron. Astrophys. 593, A3 (2016) ADSCrossRefGoogle Scholar
  34. D.E. Brownlee, Cosmic dust: collection and research. Annu. Rev. Earth Planet. Sci. 13, 147–173 (1985) ADSCrossRefGoogle Scholar
  35. D. Brownlee, D. Joswiak, G. Matrajt, Overview of the rocky component of Wild 2 comet samples: insight into the early solar system, relationship with meteoritic materials and the differences between comets and asteroids. Meteorit. Planet. Sci. 47(4), 453–470 (2012) ADSCrossRefGoogle Scholar
  36. M. Bukhari Syed, J. Blum, K. Wahlberg Jansson, A. Johansen, The role of pebble fragmentation in planetesimal formation. I. Experimental study. Astrophys. J. 834, 145 (2017) ADSCrossRefGoogle Scholar
  37. A. Carusi, L. Kresak, E. Perozzi, G.B. Valsecchi, First results of the integration of motion of short-period comets over 800 years, in Dynamics of Comets: Their Origin and Evolution, ed. by A. Carusi, G.B. Valsechhi. (D. Reidel, Dordrecht, 1985), pp. 319–340 CrossRefGoogle Scholar
  38. S. Charnoz, A. Morbidelli, Coupling of dynamical and collisional evolution of small bodies: an application to the early ejection of planetesimals from the Jupiter-Saturn reion. Icarus 166, 141–156 (2003) ADSCrossRefGoogle Scholar
  39. S. Charnoz, A. Morbidelli, Coupling dynamical and collisional evolution of small bodies. II. Forming the Kuiper belt, the Scattered Disk and the Oort Cloud. Icarus 188, 468–480 (2007) ADSCrossRefGoogle Scholar
  40. S.R. Chesley, M.J.S. Belton, B. Carcich, P.C. Thomas, J. Pittichova, K.P. Klaasen, J.-Y. Li, T.L. Farnham, S.D. Gillam, A.W. Harris, J. Veverka, An updated rotation model for Comet 9P/Tempel 1. Icarus 222, 516–525 (2013) ADSCrossRefGoogle Scholar
  41. P.W. Chodas, D.K. Yeomans, The orbital motion and impact circumstances of comet Shoemaker-Levy 9, in The Collision of Comet Shoemaker-Levy 9 and Jupiter, ed. by K.S. Noll, H.A. Weaver, P.D. Feldman. Space Tel. Sci. Inst. (1996), pp. 1–30 Google Scholar
  42. V. Ciarletti, A.C. Levasseur-Regourd, J. Lasue, C. Statz, D. Plettemeier, A. Herique, Y. Rogez, W. Kofman, CONSERT suggests a change in local properties of 67P/Churyumov-Gerasimenko’s nucleus at depth. Astron. Astrophys. 583, A40 (2015) ADSCrossRefGoogle Scholar
  43. V. Ciarletti et al., The WISDOM radar: unveiling the subsurface beneath the ExoMars rover and identifying the best locations for drilling. Astrobiology 17, 565–584 (2017b) ADSCrossRefGoogle Scholar
  44. V. Ciarletti, A. Herique, J. Lasue, A.-C. Levasseur-Regourd, D. Plettemeier, F. Lemmonier, C. Guiffaut, P. Pasquero, W. Kofman, CONSERT constrains the internal structure of 67P at a few meters size scale. Mon. Not. R. Astron. Soc. 469, S805–S817 (2017a) CrossRefGoogle Scholar
  45. J.F. Cooper, E.R. Christian, R.R. Johnson, Heliospheric cosmic ray irradiation of Kuiper belt comets. Adv. Space Res. 21, 1611–1614 (1998) ADSCrossRefGoogle Scholar
  46. P. D’Alessio, N. Calvet, L. Hartmann, R. Franco-Hernández, H. Servín, Effects of dust growth and settling in T Tauri disks. Astrophys. J. 638, 314–335 (2006) ADSCrossRefGoogle Scholar
  47. B.J.R. Davidsson, P.J. Gutiérrez, Estimating the nucleus density of Comet 19P/Borrelly. Icarus 168(2), 392–408 (2004) ADSCrossRefGoogle Scholar
  48. B.J.R. Davidsson, P.J. Gutiérrez, Nucleus properties of Comet 67P/Churyumov-Gerasimenko estimated from non-gravitational force modeling. Icarus 176(2), 453–477 (2005) ADSCrossRefGoogle Scholar
  49. B.J.R. Davidsson, P.J. Gutiérrez, Non-gravitational force modeling of comet 81P/Wild 2. I. A nucleus bulk density estimate. Icarus 180, 224–242 (2006) ADSCrossRefGoogle Scholar
  50. B.J.R. Davidsson, P.J. Gutierrez, H. Rickman, Nucleus properties of Comet 9P/Tempel 1 estimated from non-gravitational force modeling. Icarus 187, 306–320 (2007) ADSCrossRefGoogle Scholar
  51. B.J.R. Davidsson, H. Sierks, C. Güttler, F. Marzari, M. Pajola, H. Rickman, M.F. A’Hearn, A.-T. Auger, M.R. El-Maarry, S. Fornasier, P.J. Gutiérrez, H.U. Keller, M. Massironi, C. Snodgrass, J.-B. Vincent, C. Barbieri, P.L. Lamy, R. Rodrigo, D. Koschny, M.A. Barucci, J.-L. Bertaux, I. Bertini, G. Cremonese, V. Da Deppo, S. Debei, M. De Cecco, C. Feller, M. Fulle, O. Groussin, S.F. Hviid, S. Höfner, W.-H. Ip, L. Jorda, J. Knollenberg, G. Kovacs, J.-R. Kramm, E. Kührt, M. Küppers, F. La Forgia, L.M. Lara, M. Lazzarin, J.J. Lopez Moreno, R. Moissl-Fraund, S. Mottola, G. Naletto, N. Oklay, N. Thomas, C. Tubiana, The primordial nucleus of comet 67P/Churyumov-Gerasimenko. Astron. Astrophys. 592, A63 (2016) CrossRefGoogle Scholar
  52. D. de Niem, E. Kührt, S. Hviid, B. Davidsson, Low velocity collisions of porous planetesimals in the early solar system. Icarus 301, 196–218 (2018) ADSCrossRefGoogle Scholar
  53. F. DeMeo, R.P. Binzel, Comets in the near-Earth object population. Bull. Am. Astron. Soc. 38, 581 (2006) Google Scholar
  54. C. Dominik, A.G.G.M. Tielens, The physics of dust coagulation and the structure of dust aggregates in space. Astrophys. J. 480, 647–673 (1997) ADSCrossRefGoogle Scholar
  55. B. Donn, The accumulation and structure of comets, in Comets in the Post-Halley Era, vol. 1, ed. by R.L. Newburn, M. Neugebauer, J. Rahe (Kluwer Academic Publishers, Dordrecht, 1991), pp. 335–355 CrossRefGoogle Scholar
  56. B. Donn, D. Hughes, A fractal model of a cometary nucleus formed by random accretion, in Proc. 20th ESLAB Symposium on the Exploration of Halley’s Comet (1986), pp. 523–524. ESA SP-250 Google Scholar
  57. M. Duncan, H.F. Levison, A scattered comet disk and the origin of Jupiter family comets. Science 276, 1670–1672 (1997) ADSCrossRefGoogle Scholar
  58. M. Duncan, T. Quinn, S. Tremaine, The origin of short-period comets. Astrophys. J. Lett. 328, L69–L73 (1988) ADSCrossRefGoogle Scholar
  59. M.R. El-Maarry, N. Thomas, A. Garcia Berna, R. Marschall, A.-T. Auger, O. Groussin, M. Massironi, S. Marchi, F. Preusker, F. Scholten, L. Jorda, E. Kührt, M. Hofmann, S. Hoefner, J. Deller (the OSIRIS team), Fractures on comet 67P/Churyumov-Gerasimenko observed by the Rosetta/OSIRIS camera. Geophys. Res. Lett. 42(13), 5170–5178 (2015) ADSCrossRefGoogle Scholar
  60. S. Espinasse, J. Klinger, C. Ritz, B. Schmitt, Modeling of the thermal behavior and of the chemical differentiation of cometary nuclei. Icarus 92, 350–365 (1991) ADSCrossRefGoogle Scholar
  61. F.P. Fanale, J.R. Salvail, An idealized short-period comet model: surface insolation, H2O flux, and mantle development. Icarus 60, 476–511 (1984) ADSCrossRefGoogle Scholar
  62. J.A. Fernández, New and evolved comets in the solar system. Astron. Astrophys. 96, 26–35 (1981) ADSGoogle Scholar
  63. Y.R. Fernández, D.C. Jewitt, S.S. Shephard, Low albedos among extinct comet candidates. Astrophys. J. Lett. 553, L197–L200 (2001) ADSCrossRefGoogle Scholar
  64. S. Ferrari, L. Penasa, F. La Forgia, M. Massironi, G. Naletto, M. Lazzarin, S. Fornasier, P.H. Hasselmann, A. Lucchetti, M. Pajola, F. Ferri, P. Cambianica, N. Oklay, C. Tubiana, H. Sierks, P.L. Lamy, R. Rodrigo, D. Koschny, B. Davidsson, M.A. Barucci, J.-L. Bertaux, I. Bertini, D. Bodewits, G. Cremonese, V. Da Deppo, S. Debei, M. De Cecco, J. Deller, M. Franceschi, E. Frattin, M. Fulle, O. Groussin, P.J. Gutiérrez, C. Güttler, S.F. Hviid, W.-H. Ip, L. Jorda, H.U. Keller, J. Knollenberg, E. Kührt, M. Küppers, L.M. Lara, J.J. López-Moreno, F. Marzari, X. Shi, E. Simioni, N. Thomas, J.-B. Vincent, The big lobe of 67P/Churyumov-Gerasimenko comet: morphological and spectrophotometric evidences of layering as from OSIRIS data. Mon. Not. R. Astron. Soc. 479(2), 1555–1568 (2018) ADSCrossRefGoogle Scholar
  65. M. Fulle, J. Blum, Fractal dust constrains the collisional history of comets. Mon. Not. R. Astron. Soc. 469, S39–S44 (2017) ADSCrossRefGoogle Scholar
  66. M. Fulle, V. Della Corte, A. Rotundi, P. Weissman, A. Juhasz, K. Szego, R. Sordini, M. Ferrari, S. Ivanovski, F. Lucarelli, M. Accolla, S. Merouane, V. Zakharov, E. Mazzotta Epifani, J.J. L_opez-Moreno, J. Rodríguez, L. Colangeli, P. Palumbo, E. Grün, M. Hilchenbach, E. Bussoletti, F. Esposito, S.F. Green, P.L. Lamy, J.A.M. McDonnell, V. Mennella, A. Molina, R. Morales, F. Moreno, J.L. Ortiz, E. Palomba, R. Rodrigo, J.C. Zarnecki, M. Cosi, F. Giovane, B. Gustafson, M.L. Herranz, J.M. Jerónimo, M.R. Leese, A.C. López-Jiménez, N. Altobelli, Density and charge of pristine fluffy particles from comet 67P/Churyumov-Gerasimenko. Astrophys. J. Lett. 802, L12 (2015) ADSCrossRefGoogle Scholar
  67. M. Fulle, J. Blum, S.F. Green, B. Gundlach, A. Henrique, F. Moreno, S. Mottola, A. Rotundi, C. Snodgrass, The refractory-to-ice mass ratio in comets. Mon. Not. R. Astron. Soc. 482, 3326–3340 (2019) ADSCrossRefGoogle Scholar
  68. P. Garaud, F. Meru, M. Galvagni, C. Olczak, From dust to planetesimals: an improved model for collisional growth in protoplanetary disks. Astrophys. J. 764, 146 (2013) ADSCrossRefGoogle Scholar
  69. S. Gasc, et al., Change of outgassing pattern of 67P/Churyumov-Gerasimenko during the March 2016 equinox as seen by ROSINA. Mon. Not. R. Astron. Soc. 469, S108–S117 (2017) CrossRefGoogle Scholar
  70. R.W. Gaskell, L. Jorda, H. Sierks, P. Gutierrez, S. Faurschou Hviid, H.U. Keller, S. Mottola, C. Campanna (the OSIRIS team), Changes in Comet 67P/Churyumov-Gerasimenko during the ROSETTA Era—Shape, Topography and Rotation. AAS/DPS Meet. 48, 11603 (2016) Google Scholar
  71. K.-H. Glassmeier, H. Boehnhardt, D. Koschny, e. Kuhrt, I. Richter, The Rosetta mission: flying towards the origin of the solar system. Space Sci. Rev. 128, 1–21 (2007) ADSCrossRefGoogle Scholar
  72. R. Gomes, H.F. Levison, K. Tsiganis, A. Morbidelli, Origin of the cataclysmic Late Heavy Bombardment of the terrestrial planets. Nature 435, 466–469 (2005) ADSCrossRefGoogle Scholar
  73. O. Groussin, L. Jorda, A.-T. Auger, E. Kührt, R. Gaskell, C. Capanna, F. Scholten, F. Preusker, P. Lamy, S. Hviid, J. Knollenberg, U. Keller, C. Huettig, H. Sierks, C. Barbieri, R. Rodrigo, D. Koschny, H. Rickman, M.F. A’Hearn, J. Agarwal, M.A. Barucci, J.-L. Bertaux, I. Bertini, S. Boudreault, G. Cremonese, V. Da Deppo, B. Davidsson, S. Debei, M. De Cecco, M.R. El-Maarry, S. Fornasier, M. Fulle, P.J. Gutiérrez, C. Güttler, W.-H. Ip, J.-R. Kramm, M. Küppers, M. Lazzarin, L.M. Lara, J.J. Lopez Moreno, S. Marchi, F. Marzari, M. Massironi, H. Michalik, G. Naletto, N. Oklay, A. Pommerol, M. Pajola, N. Thomas, I. Toth, C. Tubiana, J.-B. Vincent, Gravitational slopes, geomorphology, and material strengths of the nucleus of comet 67P/Churyumov-Gerasimenko from OSIRIS observations. Astron. Astrophys. 583, A32 (2015) CrossRefGoogle Scholar
  74. B. Gundlach, J. Blum, The stickiness of micrometer-sized water-ice particles. Astrophys. J. 798, 34 (2015) ADSCrossRefGoogle Scholar
  75. B. Gundlach, J. Blum, Why are Jupiter-family comets active and asteroids in cometary-like orbits inactive? How hydrostatic compression leads to inactivity. Astron. Astrophys. 589, A111 (2016) ADSCrossRefGoogle Scholar
  76. B. Gundlach, J. Blum, H.U. Keller, Y.V. Skorov, What drives the dust activity of comet 67P/Churyumov-Gerasimenko? Astron. Astrophys. 583, A12 (2015) ADSCrossRefGoogle Scholar
  77. B. Gundlach, K.P. Schmidt, C. Kreuzig, D. Bischoff, F. Rezaei, S. Kothe, J. Blum, B. Grzesik, E. Stoll, The tensile strength of ice and dust aggregates and its dependence on particle properties. Mon. Not. R. Astron. Soc. 479, 1273–1277 (2018) ADSCrossRefGoogle Scholar
  78. P.J. Gutiérrez, R. Rodrigo, J.L. Ortiz, B.J.R. Davidsson, An investigation of errors in estimates of the cometary nuclei active area fractions. Astron. Astrophys. 401, 755–761 (2003) ADSCrossRefGoogle Scholar
  79. C. Güttler, J. Blum, A. Zsom, C.W. Ormel, C.P. Dullemond, The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments. Astron. Astrophys. 513, A56 (2010) ADSCrossRefGoogle Scholar
  80. K.E. Haisch, E.A. Lada, C.J. Lada, Disk frequencies and lifetimes in young clusters. Astrophys. J. 553, L153–L156 (2001) ADSCrossRefGoogle Scholar
  81. J.K. Harmon, M.C. Nolan, J.D. Giorgini, E.S. Howell, Radar observations of 8P/Tuttle: a contact-binary comet. Icarus 207, 499–502 (2010) ADSCrossRefGoogle Scholar
  82. A. Herique, W. Kofman, P. Beck, L. Bonal, I. Buttarazzi, E. Heggy, J. Lasue, A.C. Levasseur- Regourd, E. Quirico, S. Zine, Cosmochemical implications of CONSERT permittivity characterization of 67P/CG. Mon. Not. R. Astron. Soc. 462, S516–S532 (2016) ADSCrossRefGoogle Scholar
  83. M. Hirabayashi, D. Scheeres, S.R. Chesley, S. Marchi, J.W. McMahon, J. Steckloff, S. Mottola, S.P. Naidu, T. Bowling, Fission and reconfiguration of bilobate comets as revealed by 67P/Churyumov-Gerasimenko. Nature 534, 352–355 (2016) ADSCrossRefGoogle Scholar
  84. K.M. Housen, K. Holsapple, A crater and its ejecta: an interpretation of Deep Impact. Icarus 187, 345–356 (2007) ADSCrossRefGoogle Scholar
  85. X. Hu, B. Gundlach, I. von Borstel, J. Blum, X. Shi, Effect of radiative heat transfer in porous comet nuclei: case study of 67P/Churyumov-Gerasimenko. Astron. Astrophys. 630, A5 (2019) CrossRefGoogle Scholar
  86. A. Johansen, A.N.Y.M.-M. Mac Low, Particle clumping and planetesimal formation depend strongly on metallicity. Astrophys. J. 704, L75–L79 (2009) ADSCrossRefGoogle Scholar
  87. A. Johansen, J.S. Oishi, M.-M. Mac Low, H. Klahr, T. Henning, A. Youdin, Rapid planetesimal formation in turbulent circumstellar disks. Nature 448, 1022–1025 (2007) ADSCrossRefGoogle Scholar
  88. A. Johansen, J. Blum, H. Tanaka, C. Ormel, M. Bizzarro, H. Rickman, The multifaceted planetesimal formation process, in Protostars and Planets VI (2014), pp. 547–570 Google Scholar
  89. A. Johansen, M.-M. Mac Low, P. Lacerda, M. Bizzarro, Growth of asteroids, planetary embryos, and Kuiper belt objects by chondrule accretion. Sci. Adv. 1, e1500109 (2015) ADSCrossRefGoogle Scholar
  90. R.E. Johnson, Irradiation effects in a comet’s outer layers. J. Geophys. Res. 96, 17553–17557 (1991) ADSCrossRefGoogle Scholar
  91. G. Jones, M.M. Knight, K. Battams, . co-athors, The science of sungrazers, sunskirters, and other near-Sun comets. Space Sci. Rev. 214(1), 20 (2018) ADSCrossRefGoogle Scholar
  92. L. Jorda, R. Gaskell, C. Capanna, S. Hviid, P. Lamy, J. Durech, G. Faury, O. Groussin, P. Gutierrez, C. Jackman, S.J. Keihm, H.U. Keller, J. Knollenberg, E. Kührt, S. Marchi, S. Mottola, E. Palmer, F.P. Schloerb, H. Sierks, J.-B. Vincent, M.F. A’Hearn, C. Barbieri, R. Rodrigo, D. Koschny, H. Rickman, M.A. Barucci, J.L. Bertaux, I. Bertini, G. Cremonese, V.D. Deppo, B. Davidsson, S. Debei, M. De Cecco, S. Fornasier, M.F.A.C. Güttler, W.-H. Ip, J.R. Kramm, M.K. an, L.M. Lara, M. Lazzarin, J.J. Lopez Moreno, F. Marzari, G. Naletto, N. Oklay, N. Thomas, C. Tubiana, K.-P. Wenzel, The global shape, density and rotation of comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations. Icarus 277, 257–278 (2016) ADSCrossRefGoogle Scholar
  93. M. Jutzi, E. Asphaug, The shape and structure of cometary nuclei as a result of low-velocity accretion. Science 348(6241), 1355–1358 (2015) ADSCrossRefGoogle Scholar
  94. M. Jutzi, W. Benz, Formation of bi-lobed shapes by sub-catastrophic collisions. A late origin of comet 67P’s structure. Astron. Astrophys. 597, A62 (2017) ADSCrossRefGoogle Scholar
  95. M. Jutzi, W. Benz, A. Toliou, A. Morbidelli, R. Brasser, How primordial is the structure of comet 67P? Combined collisional and dynamical models suggest a late formation. Astron. Astrophys. 597, A61 (2017) ADSCrossRefGoogle Scholar
  96. H.U. Keller, D. Britt, B.J. Buratti, N. Thomas, In situ observations of cometary nuclei, in Comets II, ed. by M.C. Festou, U. Keller, H.A. Weaver (Univ. Arizona Press, Tucson, 2004), pp. 211–222 Google Scholar
  97. H.U. Keller, S. Mottola, B. Davidsson, . co-authors, Insolation, erosion and morphology of comet 67P/Churyumov-Gerasimenko. Astron. Astrophys. 583, A34 (2015) CrossRefGoogle Scholar
  98. M.S. Kelley, D.H. Wooden, The composition of dust in Jupiter-family comets inferred from infrared spectroscopy. Planet. Space Sci. 57, 1133–1145 (2009) ADSCrossRefGoogle Scholar
  99. S.J. Kenyon, J.X. Luu, Accretion in the early Kuiper belt. I. Coagulation and velocity evolution. Astron. J. 115, 2136–2160 (1998) ADSCrossRefGoogle Scholar
  100. D.J. Kessler, Derivation of the collision probability between orbiting objects: the lifetimes of Jupiter’s outer moons. Icarus 48, 39–48 (1981) ADSCrossRefGoogle Scholar
  101. Y. Kim, M. Ishiguro, F. Usui, Physical properties of asteroids in comet-like orbits in infrared asteroid survey catalogs. Astrophys. J. 789, 151 (2014) ADSCrossRefGoogle Scholar
  102. M. Knight, M.F. A’Hearn, D.A. Biesecker, G. Faury, D.P. Hamilton, P. Lamy, A. Llebaria, Photometric study of the Kreutz comets observed by SOHO from 1996–2005. Astron. J. 139, 926–949 (2010) ADSCrossRefGoogle Scholar
  103. W. Kofman, A. Herique, Y. Barbin, J.-P. Barriot, V. Ciarletti, S. Clifford, P. Edenhofer, C. Elachi, C. Eyraud, J.-P. Goutail, E. Heggy, L. Jorda, J. Lasue, A.-C. Levasseur-Regourd, E. Nielsen, P. Pasquero, F. Preusker, P. Puget, D. Plettemeier, Y. Rogez, H. Sierks, C. Statz, H. Svedhem, I. Williams, S. Zine, J. Van Zyl, Properties of the 67P/Churyumov-Gerasimenko interior revealed by CONSERT radar. Science 249, aab0639-1 (2015) Google Scholar
  104. H. Kreutz, Investigations about the cometary system 1843 I, 1880 I and 1882 II Part I. Publ. Kiel Observatory. Printed by C. Schaidt, C.F. Mohr Nachfl. (1888) Google Scholar
  105. M. Krolikówska, 67P/Churyumov-Gerasimenko—potential target for the Rosetta mission. Acta Astron. 54, 195–209 (2003) ADSGoogle Scholar
  106. G.W. Kronk, Comets, A Descriptive Catalog (Enslow, Hillside, 1984). 331 pp Google Scholar
  107. G.P. Kuiper, On the origin of the solar system, in Astrophysics, ed. by J.A. Hynek (McGraw Hill, New York, 1951), pp. 357–424 Google Scholar
  108. M. Küppers, H.U. Keller, E. Kührt, M.F. A’Hearn, K. Altwegg, R. Bertrand, H. Busemann, M.T. Capria, L. Colangeli, B. Davidsson, P. Ehrenfreund, J. Knollenberg, S. Mottola, A. Rathke, P. Weiss, M. Zolensky, E. Akim, A. Basilevsky, E. Galimov, M. Gerasimov, O. Korablev, I. Lomakin, M. Marov, M. Martynov, M. Nazarov, A. Zakharov, L. Zelenyi, A. Aronica, A.J. Ball, C. Barbieri, A. Bar-Nun, J. Benkhoff, J. Biele, N. Biver, J. Blum, D. Bockelée-Morvan, O. Botta, J.-H. Bredehöft, F. Capaccioni, S. Charnley, E. Cloutis, H. Cottin, G. Cremonese, J. Crovisier, S.A. Crowther, E.M. Epifani, F. Esposito, A.C. Ferrari, F. Ferri, M. Fulle, J. Gilmour, F. Goesmann, N. Gortsas, S.F. Green, O. Groussin, E. Grün, P.J. Gutiérrez, P. Hartogh, T. Henkel, M. Hilchenbach, T.-M. Ho, G. Horneck, S.F. Hviid, W.-H. Ip, A. Jäckel, E. Jessberger, R. Kallenbach, G. Kargl, N.I. Kömle, A. Korth, K. Kossacki, C. Krause, H. Krüger, Z.-Y. Li, J. Licandro, J.J. Lopez-Moreno, S.C. Lowry, I. Lyon, G. Magni, U. Mall, I. Mann, W. Markiewicz, Z. Martins, M. Maurette, U. Meierhenrich, V. Mennella, T.C. Ng, L.R. Nittler, P. Palumbo, M. Pätzold, D. Prialnik, M. Rengel, H. Rickman, J. Rodriguez, R. Roll, D. Rost, A. Rotundi, S. Sandford, M. Schönbächler, H. Sierks, R. Srama, R.M. Stroud, S. Szutowicz, C. Tornow, S. Ulamec, M. Wallis, W. Waniak, P. Weissman, R. Wieler, P. Wurz, K.L. Yung, J.C. Zarnecki, Triple F—a comet nucleus sample return mission. Exp. Astron. 23, 809–847 (2009) ADSCrossRefGoogle Scholar
  109. P.L. Lamy, I. Toth, Y.R. Fernández, H.A. Weaver, The sizes, shapes albedos, and colors of cometary nuclei, in Comets II, ed. by M.C. Festoru, H.U. Keller, H.A. Weaver (Univ. Arizona Press, Tucson, 2004), pp. 223–264 Google Scholar
  110. J. Lasue, R. Botet, A.C. Levasseur-Regourd, E. Hadamcik, Cometary nuclei internal structure from early aggregation simulations. Icarus 203, 599–609 (2009) ADSCrossRefGoogle Scholar
  111. J. Lasue, R. Botet, A.C. Levasseur-Regourd, E. Hadamcik, W. Kofman, Appearance of layered structures in numerical simulations of polydisperse bodies accretion: application to comet nuclei. Icarus 213, 369–381 (2011) ADSCrossRefGoogle Scholar
  112. A.-C. Levasseur-Regourd et al., Cometary dust. Space Sci. Rev. 214, 64 (2018) ADSCrossRefGoogle Scholar
  113. H.F. Levison, M.J. Duncan, From the Kuiper belt to Jupiter-family comets: the spatial distribution of ecliptic comets. Icarus 127, 13–32 (1997) ADSCrossRefGoogle Scholar
  114. H.F. Levison, M.J. Duncan, K. Zahnle, M. Holman, L. Dones, Planetary impact rates from ecliptic comets. Icarus 143, 415–420 (2000) ADSCrossRefGoogle Scholar
  115. D.R. Lide (ed.), CRC Handbook of Chemistry and Physics, 85th edn. (CRC Press, Boca Raton, 2004), pp. 6–8. ISBN 978-0-8493-0485-9 Google Scholar
  116. Z.Y. Lin, et al., Investigating the physical properties of outbursts on comet 67P/Churyumov-Gerasimenko. Mon. Not. R. Astron. Soc. 469, S731–S740 (2017) CrossRefGoogle Scholar
  117. Y. Liu, T. Henning, C. Carrasco-González, C.J. Chandler, H. Linz, T. Birnstiel, R. van Boekel, L.M. Pérez, M. Flock, L. Testi, L.F. Rodríguez, R. Galván-Madrid, The properties of the inner disk around HL Tau: multi-wavelength modeling of the dust emission. Astron. Astrophys. 607, A74 (2017) CrossRefGoogle Scholar
  118. S. Lorek, P. Lacerda, J. Blum, Local growth of dust- and ice-mixed aggregates as cometary building blocks in the solar nebula. Astron. Astrophys. 611, A18 (2018) ADSCrossRefGoogle Scholar
  119. S. Lowry, S.R. Duddy, B. Rozitis, S.F. Green, A. Fitzsimmons, C. Snodgrass, H. Hsieh, O. Hainaut, The nucleus of Comet 67P/Churyumov-Gerasimenko. A new shape model and thermophysical analysis. Astron. Astrophys. 548, A12, 15pp (2012) CrossRefGoogle Scholar
  120. T. Mannel, M.S. Bentley, R. Schmied, H. Jeszenszky, A.C. Levasseur-Regourd, J. Romstedt, K. Torkar, Fractal cometary dust—a window into the early Solar system. Mon. Not. R. Astron. Soc. 462, S304–S311 (2016) ADSCrossRefGoogle Scholar
  121. T. Mannel, M.S. Bentley, P.D. Boakes, H. Jeszenszky, P. Ehrenfreund, C. Engrand, C. Koeberl, A.C. Levasseur-Regourd, J. Romstedt, R. Schmied, K. Torkar, I. Weber, Dust of comet 67P/Churyumov-Gerasimenko collected by Rosetta/MIDAS: classification and extension to the nanometre scale. Mon. Not. R. Astron. Soc. 630, A26 (2019) Google Scholar
  122. B.G. Marsden, The sungrazing comet group. Astron. J. 72, 1170–1183 (1967) ADSCrossRefGoogle Scholar
  123. B.G. Marsden, The sungrazing comet group. II. Astron. J. 98, 2306–2321 (1989) ADSCrossRefGoogle Scholar
  124. M. Massironi, E. Simoni, F. Marzari, et al., Two independent and primitive envelopes of the bilobate nucleus of comet 67P. Nature 526, 402–405 (2015) ADSCrossRefGoogle Scholar
  125. C. Matonti, N. Attree, O. Groussin, et al., Bilobate comet morphology and internal structure controlled by shear deformation. Nat. Geosci. 12, 157–162 (2019) ADSCrossRefGoogle Scholar
  126. J.A.M. McDonnell, P.L. Lamy, G.S.A. Pankiewucz, S.F. Green, C.H. Perry, The comet nucleus: Ice and dust morphological balancesin a production surface of comet P/Halley. LPSC 20, 658 (1989) ADSGoogle Scholar
  127. K.J. Meech, O.R. Hainaut, B.G. Marsden, Comet nucleus size distributions from HST and Keck telescopes. Icarus 170, 463–491 (2004) ADSCrossRefGoogle Scholar
  128. H.J. Melosh, Impact Cratering: A Geologic Process. Oxford Monographs on Geology and Geophysics, vol. 11 (Oxford University Press, New York, 1989). 253 pp Google Scholar
  129. E. Merenyi, L. Földy, K. Szegö, I. Toth, A. Kondor, The landscape of comet Halley. Icarus 86, 9–20 (1990) ADSCrossRefGoogle Scholar
  130. R. Merk, D. Prialnik, Early thermal and structural evolution of small bodies in the trans-Neptunian zone. Earth Moon Planets 92, 359–374 (2003) ADSCrossRefGoogle Scholar
  131. R. Merk, D. Prialnik, Combined modeling of thermal evolution and accretion of trans-neptunian objects—occurrence of high temperatures and liquid water. Icarus 183, 283–295 (2006) ADSCrossRefGoogle Scholar
  132. S. Merouane, B. Zaprudin, O. Stenzel, . co-auhtos, Dust particle flux and size distribution in the coma of 67P/Churyumov-Gerasimenko measured in situ by the COSIMA instrument on board Rosetta. Astron. Astrophys. 596, A87 (2016) CrossRefGoogle Scholar
  133. D.J. Michels, N.R. Sheeley, R.A. Howard, M.J. Koomen, Observations of a comet on collision course with the Sun. Science 215, 1097–1102 (1982) ADSCrossRefGoogle Scholar
  134. M. Min, C.P. Dulllemond, M. Kama, C. Dominik, The thermal structure and the location of the snow line in the protosolar nebula: axisymmetric models with full 3-D radiative transfer. Icarus 212, 416–426 (2011) ADSCrossRefGoogle Scholar
  135. T. Montmerle, J.-C. Augereau, M. Chaussidon, M. Gounelle, B. Marty, A. Morbidelli, 3. Solar system formation and early evolution: the first 100 million years. Earth Moon Planets 98, 39–95 (2006) ADSCrossRefGoogle Scholar
  136. A. Morbidelli, H. Rickman, Comets as collisional fragments of a primordial planetesimal disk. Astron. Astrophys. 583, A43 (2015) ADSCrossRefGoogle Scholar
  137. T. Nakamura, T. Noguchi, A. Tsuchiyama, T. Ushikubo, N.T. Kita, J.W. Valley, M.E. Zolensky, Y. Kakazu, K. Sakamoto, E. Mashio, K. Uesugi, T. Nakano, Chondrule-like objects in short-period comet 81P/Wild 2. Science 321, 664–667 (2008) CrossRefGoogle Scholar
  138. A. Natta, L. Testi, N. Calvet, T. Henning, R. Waters, D. Wilner, Dust in protoplanetary disks: properties and evolution, in Protostars and Planets V (2007), pp. 767–781 Google Scholar
  139. D. Nesvorný, Jumping Neptune can explain the Kuiper belt kernel. Astron. J. 150, 68 (2015a) ADSCrossRefGoogle Scholar
  140. D. Nesvorný, Evidence for slow migration of Neptune from the inclination distribution of Kuiper belt objects. Astron. J. 150, 73 (2015b) ADSCrossRefGoogle Scholar
  141. D. Nesvorný, A. Morbidelli, Statistical study of the early solar system’s instability with four, five, and six giant planets. Astron. J. 144, 117 (2012) ADSCrossRefGoogle Scholar
  142. D. Nesvorný, D. Vokrouhlický, Chaotic capture of Neptune Trojans. Astron. J. 137, 5003–5011 (2009) ADSCrossRefGoogle Scholar
  143. D. Nesvorný, D. Vokrouhlický, Neptune’s orbital migration was grainy, not smooth. Astrophys. J. 825, 94 (2016) ADSCrossRefGoogle Scholar
  144. D. Nesvorný, D. Vokrouhlický, A. Morbidelli, Capture of irregular satellites during planetary encounters. Astron. J. 133, 1962–1976 (2007) ADSCrossRefGoogle Scholar
  145. D. Nesvorný, A.N. Youdin, D.C. Richardson, Formation of Kuiper belt binaries by gravitational collapse. Astron. J. 140, 785–793 (2010) ADSCrossRefGoogle Scholar
  146. D. Nesvorný, D. Vokrouhlický, A. Morbidelli, Capture of Trojans by jumping Jupiter. Astrophys. J. 768, 45 (2013) ADSCrossRefGoogle Scholar
  147. D. Nesvorný, D. Vokrouhlický, L. Dones, H.F. Levison, N. Kaib, A. Morbidelli, Origin and evolution of short-period comets. Astrophys. J. 845, 27 (2017) ADSCrossRefGoogle Scholar
  148. T.L. Norris, A.J. Gancarz, D.J. Rokop, K.W. Thomas, Half like of Al-26. J. Geophys. Res. 88, B331–B333 (1983) CrossRefGoogle Scholar
  149. J. Oberst, B. Giese, E. Howington-Kraus, R. Kirk, L. Soderblom, B. Buratti, M. Hicks, R. Nelson, D. Britt, The nucleus of comet Borrelly: a study of morphology and surface brightness. Icarus 167, 70–79 (2004) ADSCrossRefGoogle Scholar
  150. D.P. O’Brien, R. Greenberg, The collisional and dynamical evolution of the main-belt and NEA size distributions. Icarus 178, 179–212 (2005) ADSCrossRefGoogle Scholar
  151. C.R. O’Dell, A new model for cometary nuclei. Icarus 19, 137–146 (1971) ADSCrossRefGoogle Scholar
  152. R.C. Ogliore, G.R. Huss, N. Nagashima, A.L. Butterworth, Z. Gainsforth, J. Stodolna, A.J. Westphal, D. Joswiak, T. Tyliszczak, Incorporation of a late-forming chondrule into comet Wild 2. Astrophys. J. Lett. 745, L19 (2012) ADSCrossRefGoogle Scholar
  153. N. Oklay, J.-B. Vincent, S. Fornasier, M. Pajola, S. Besse, B.J.R. Davidsson, L.M. Lara, S. Mottola, G. Naletto, H. Sierks, A.M. Barucci, F. Scholten, F. Preusker, A. Pommerol, N. Masoumzadeh, M. Lazzarin, C. Barbieri, P.L. Lamy, R. Rodrigo, D. Koschny, H. Rickman, M.F. A’Hearn, J.-L. Bertaux, I. Bertini, G. Cremonese, V. Da Deppo, S. Debei, M. De Cecco, M. Fulle, O. Groussin, P.J. Gutierrez, C. Güttler, I. Hall, M. Hofmann, S.F. Hviid, W.-H. Ip, L. Jorda, H.U. Keller, J. Knollenberg, G. Kovacs, J.-R. Kramm, E. Kührt, M. Küppers, Z.-Y. Lin, F. Marzari, F. Moreno, X. Shi, N. Thomas, I. Toth, C. Tubiana, Variegation on comet 67P/Churyumov-Gerasimenko in the regions showing activity. Astron. Astrophys. 586, A80 (2016) CrossRefGoogle Scholar
  154. J.H. Oort, The structure of the cloud of comets surrounding the solar system and a hypothesis concerning its origin. Bull. Astron. Inst. Neth. 11, 91–110 (1950) ADSGoogle Scholar
  155. E.J. Öpik, Collision probabilities with the planets and the distribution of interplanetary matter. Proc. R. Ir. Acad. A 54, 165–199 (1951) zbMATHGoogle Scholar
  156. T. Ott, E. Drolshagen, D. Koschny, C. Güttler, C. Tubiana, E. Frattin, J. Agarwal, H. Sierks, I. Bertini, C. Barbieri, P.I. Lamy, R. Rodrigo, H. Rickman, M.F. A’Hearn, M.A. Barucci, J.-L. Bertaux, S. Boudreault, G. Cremonese, V. Da Deppo, B. Davidsson, S. Debei, M. De Cecco, J. Deller, C. Feller, S. Fornasier, M. Fulle, B. Geiger, A. Gicquel, O. Groussin, P.J. Gutiérrez, M. Hofmann, S.F. Hviid, W.-H. Ip, L. Jorda, H.U. Keller, J. Knollenberg, G. Kovacs, J.R. Kramm, E. Kührt, M. Küppers, L.M. Lara, M. Lazzarin, Z.-Y. Lin, J.J. López-Moreno, F. Marzari, S. Mottola, G. Naletto, N. Oklay, M. Pajola, X. Shi, N. Thomas, J.-B. Vincent, B. Poppe, Dust mass distribution around comet 67P/Churyumov-Gerasimenko determined via parallax measurements using Rosetta’s OSIRIS cameras. Mon. Not. R. Astron. Soc. 469, S276–S284 (2017) CrossRefGoogle Scholar
  157. M. Pätzold, T. Andert, M. Hahn, S.W. Asmar, J.-P. Barriot, M.K. Bird, B. Häusler, K. Peter, S. Tellmann, E. Grün, P.R. Weissman, H. Sierks, L. Jorda, R. Gaskell, F. Preusker, F. Scholten, A homogeneous nucleus for comet 67P/Churyumov-Gerasimenko from its gravity field. Nature 530, 63–65 (2016) ADSCrossRefGoogle Scholar
  158. M. Pätzold, T. Andert, J.-P. Barriot, M. Hahn, M. Bird, B. Häusler, S.A. Tellemann, The mass loss of comet 67P/Churyumov-Gerasimenko. AAS/DPS Meet. 49, 509.01 (2017) Google Scholar
  159. L. Penasa, M. Massironi, G. Naletto, E. Simioni, S. Ferrari, M. Pajola, A. Lucchetti, F. Preusker, F. Scholten, L. Jorda, R. Gaskell, F. Ferri, F. Marzari, B. Davidsson, S. Mottola, H. Sierks, C. Barbieri, P.L. Lamy, R. Rodrigo, D. Koschny, H. Rickman, H.U. Keller, J. Agarwal, M.F. A’Hearn, M.A. Barucci, J.L. Bertaux, I. Bertini, G. Cremonese, V. Da Deppo, S. Debei, M. De Cecco, J. Deller, C. Feller, S. Fornasier, E. Frattin, M. Fulle, O. Groussin, P.J. Gutierrez, C. Guttler, M. Hofmann, S.F. Hviid, W.H. Ip, J. Knollenberg, J.R. Kramm, E. Kuhrt, M. Kuppers, F. La Forgia, L.M. Lara, M. Lazzarin, J.-C. Lee, J.J. Lopez Moreno, N. Oklay, X. Shi, N. Thomas, C. Tubiana, J.B. Vincent, A threedimensional modelling of the layered structure of comet 67P/Churyumov-Gerasimenko. Mon. Not. R. Astron. Soc. 469, S741–S754 (2017) CrossRefGoogle Scholar
  160. L.M. Pérez, J.M. Carpenter, C.J. Chandler, A. Isella, S.M. Andrews, L. Ricci, N. Calvet, S.A. Corder, A.T. Deller, C.P. Dullemond, J.S. Greaves, R.J. Harris, T. Henning, W. Kwon, J. Lazio, H. Linz, L.G. Mundy, A.I. Sargent, S. Storm, L. Testi, D.J. Wilner, Constraints on the radial variation of grain growth in the AS 209 circumstellar disk. Astrophys. J. Lett. 760, L17 (2012) ADSCrossRefGoogle Scholar
  161. L.M. Pérez, C.J. Chandler, A. Isella, J.M. Carpenter, S.M. Andrews, N. Calvet, S.A. Corder, A.T. Deller, C.P. Dullemond, J.S. Greaves, R.J. Harris, T. Henning, W. Kwon, J. Lazio, H. Linz, L.G. Mundy, L. Ricci, A.I. Sargent, S. Storm, M. Tazzari, L. Testi, D.J. Wilner, Grain growth in the circumstellar disks of the young stars CY Tau and DoAr 25. Astrophys. J. 813, 41 (2015) ADSCrossRefGoogle Scholar
  162. M. Podolak, D. Prialnik, The conditions for liquid water in cometary nuclei, in Comets and the Origin and Evolution of Life, ed. by P.J. Thomas, C. Chyba, C. McKay (Springer, Berlin, 2006) Google Scholar
  163. F. Poulet, A. Lucchetti, J.-P. Bibring, J. Carter, B. Gondet, L. Jorda, Y. Langevin, C. Pilorget, C. Capanna, G. Cremonese, Origin of the local structures at the Philae landing site and possible implications on the formation and evolution of 67P/Churyumov-Gerasimenko. Mon. Not. R. Astron. Soc. 462, S23–S32 (2016) CrossRefGoogle Scholar
  164. F. Preusker, F. Scholten, K.-D. Matz, T. Roatsch, K. Willner, S.F. Hviid, J. Knollenberg, L. Jorda, P.J. Gutiérrez, E. Kührt, S. Mottola, M.F. A’Hearn, N. Thomas, H. Sierks, C. Barbieri, P. Lamy, R. Rodrigo, D. Koschny, H. Rickman, H.U. Keller, J. Agarwal, M.A. Barucci, J.-L. Bertaux, I. Bertini, G. Cremonese, V. Da Deppo, B. Davidsson, S. Debei, M. De Cecco, S. Fornasier, M. Fulle, O. Groussin, C. Güttler, W.-H. Ip, J.R. Kramm, M. Küppers, L.M. Lara, M. Lazzarin, J.J. Lopez Moreno, F. Marzari, H. Michalik, G. Naletto, N. Oklay, C. Tubiana, J.-B. Vincent, Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko—Stereo-photogrammetric analysis of Rosetta/OSIRIS image data. Astron. Astrophys. 583, A33 (2015) CrossRefGoogle Scholar
  165. F. Preusker, F. Scholten, K.-D. Matz, et al., The global meter-level shape model of comet 67P/Churyumov-Gerasimenko. Astron. Astrophys. 607, L1 (2017) ADSCrossRefGoogle Scholar
  166. D. Prialnik, M. Podolak, Radioactive heating of porous comet nuclei. Icarus 117, 420–430 (1995) ADSCrossRefGoogle Scholar
  167. D. Prialnik, M. Podolak, Changes in the structure of comet nuclei due to radioactive heating. Space Sci. Rev. 90, 169–178 (1999) ADSCrossRefGoogle Scholar
  168. D. Prialnik, A. Bar-Nun, M. Podolak, Radiogenic heating of comets by 26Al and implications for their time of formation. Astrophys. J. 319, 993–1002 (1987) ADSCrossRefGoogle Scholar
  169. L. Ricci, L. Testi, A. Natta, K.J. Brooks, Dust grain growth in \(\rho \)-Ophiuchi protoplanetary disks. Astron. Astrophys. 521, A66 (2010) ADSCrossRefGoogle Scholar
  170. J.E. Richardson, H.J. Melosh, C.M. Lisse, B. Carcich, A ballistics analysis of the Deep Impact ejecta plume: determining comet Tempel 1’s gravity, mass, and density. Icarus 190(2), 357–390 (2007) ADSCrossRefGoogle Scholar
  171. H. Rickman, Masses and densities of Comets Halley and Kopff, in The Comet Nucleus Sample Return Mission, ed. by O. Melita (ESA Publications Division, ESTEC, Noordwijk, 1986), pp. 195–205 Google Scholar
  172. H. Rickman, The thermal history and structure of cometary nuclei, in Comets in the Post-Halley Era, vol. 2, ed. by R.L. Newburn, M. Neugebauer, J. Rahe (Kluwer Academic Publishers, Dordrecht, 1991), pp. 733–760 Google Scholar
  173. H. Rickman, L. Kamel, M.C. Festou, C. Froeschle, Estimates of masses, volumes and densities of short-period comet nuclei, in Symposium on the Diversity and Similarity of Comets, ed. by E.J. Rolfe, B. Battrick (ESA Publications Division, ESTEC, Noordwijk, 1987), pp. 471–481 Google Scholar
  174. S.J. Robbins et al., Craters of the Pluto-Charon system. Icarus 287, 187–206 (2017) ADSCrossRefGoogle Scholar
  175. K. Ros, A. Johansen, Ice condensation as a planet formation mechanism. Astrophys. J. 552, A113 (2013) Google Scholar
  176. A. Rotundi, H. Sierks, V. Della Corte, . co-authors, Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun. Science 347, aaa3905-06 (2015) CrossRefGoogle Scholar
  177. D.D. Sasselov, M. Lecar, On the snow line in dusty protoplanetary disks. Astrophys. J. 528, 995–998 (2000) ADSCrossRefGoogle Scholar
  178. U. Schäfer, C.-C. Yang, A. Johansen, Initil mass function of planetesimals formed by the streaming instability. Astron. Astrophys. 597, A69 (2017) CrossRefGoogle Scholar
  179. R. Schräpler, J. Blum, S. Krijt, J.-H. Raabe, The physics of protoplanetary dust agglomerates. X. High-velocity collisions between small and large dust agglomerates as a growth barrier. Astrophys. J. 853, 74 (2018) ADSCrossRefGoogle Scholar
  180. S.R. Schwartz, P. Michel, M. Jutzi, S. Marchi, Y. Zhang, D.C. Richardson, Catastrophic disruptions as the origin of bilobate comets. Nat. Astron. 2, 379–382 (2018) ADSCrossRefGoogle Scholar
  181. R. Seu, R.J. Phillips, D. Biccari, R. Orosei, A. Masadea, G. Pcardi, A. Safaenilli, B.A. Campbell, J.J. Plaut, L. Marinangeli, S.E. Smrekar, D.C. Nunes, SHARAD sounding radar on the Mars Reconnaissance Orbiter. J. Geophys. Res., Planets 112(E5), Issue (2007) CrossRefGoogle Scholar
  182. N.R. Sheeley Jr., R.A. Howard, M.J. Koomen, D.J. Michels, Coronoagraphic observations of two new sungrazing comets. Nature 300, 239–242 (1982) ADSCrossRefGoogle Scholar
  183. C.S. Shoemaker, E.M. Shoemaker, D. Levy (1993). IAU Circular 5725 Google Scholar
  184. E.M. Shoemaker, P.R. Weissman, C.S. Shoemaker, The flux of periodic comets near Earth, in Hazards Due to Comets and Asteroids, ed. by T. Gehrels (University of Arizona Press, Tucson, 1995), pp. 313–335 Google Scholar
  185. A. Sicilia-Aguilar, L. Hartmann, N. Calvet, S.T. Megeath, J. Muzerolle, L. Allen, P. D’Alessio, B. Merlin, J. Stauffer, E. Young, C. Lada, Disk evolution in CEP OB2: results from the Spitzer Space Telescope. Astrophys. J. 638, 897–919 (2006) ADSCrossRefGoogle Scholar
  186. H. Sierks, et al., On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko. Science 347, aa1043 (2015) CrossRefGoogle Scholar
  187. J.B. Simon, P.J. Armitage, R. Li, A.N. Youdin, The mass and size distribution of planetesimals formed by the streaming instability. I. The role of self-gravity. Astrophys. J. 822, 55 (2016) ADSCrossRefGoogle Scholar
  188. Y. Skorov, J. Blum, Dust release and tensile strength of the non-volatile layer of cometary nuclei. Icarus 221, 1–11 (2012) ADSCrossRefGoogle Scholar
  189. C. Snodgrass, A. Fitzsimmons, S.C. Lowry, P. Weissman, The size distribution of Jupiter family comets. Mon. Not. R. Astron. Soc. 414, 458–469 (2011) ADSCrossRefGoogle Scholar
  190. L.A. Soderblom, T.L. Becker, G. Bennett, D.C. Boice, D.T. Britt, R.H. Brown, B.J. Buratti, C. Isbell, B. Giese, T. Hare, M.D. Hicks, E. Howington-Kraus, R.L. Kirk, M. Lee, R.M. Nelson, J. Oberst, T.C. Owen, M.D. Rayman, B.R. Sandel, S.A. Stern, N. Thomas, R.V. Yelle, Observations of Comet 19P/Borrelly by the Miniature Integrated Camera and Spectrometer aboard Deep Space 1. Science 296, 1087–1091 (2002) ADSCrossRefGoogle Scholar
  191. A. Sosa, J.A. Fernández, Cometary masses derived from non-gravitational forces. Mon. Not. R. Astron. Soc. 393, 192–214 (2009) ADSCrossRefGoogle Scholar
  192. D.C. Stephens, K.S. Noll, Detection of six trans-neptunian binaries with NICMOS: a high fraction of binaries in the cold classical disk. Astron. J. 131, 1142–1148 (2006) ADSCrossRefGoogle Scholar
  193. S.A. Stern, The effects of mechanical interaction between the interstellar medium and comets. Icarus 68, 276–283 (1986) ADSCrossRefGoogle Scholar
  194. S.A. Stern, Two important mechanisms contributing to cometary evolution in the Oort cloud. LPSC 18, 951 (1987). (Abstract) ADSGoogle Scholar
  195. S.A. Stern, P.R. Weissman, Rapid collisional evolution of comets during the formation of the Oort cloud. Nature 409, 589–591 (2001) ADSCrossRefGoogle Scholar
  196. G. Strazzulla, Ion irradiation and the origin of cometary materials. Space Sci. Rev. 90, 269–274 (1999) ADSCrossRefGoogle Scholar
  197. G. Tancredi, J.A. Fernández, H. Rickman, J. Licandro, Nuclear magnitudes and the size distribution of Jupiter family comets. Icarus 187, 527–549 (2006) ADSCrossRefGoogle Scholar
  198. M. Tazzari, L. Testi, B. Ercolano, A. Natta, A. Isella, C.J. Chandler, L.M. Pérez, S. Andrews, D.J. Wilner, L. Ricci, T. Henning, H. Linz, W. Kwon, S.A. Corder, C.P. Dullemond, J.M. Carpenter, A.I. Sargent, L. Mundy, S. Storm, N. Calvet, J.A. Greaves, J. Lazio, A.T. Deller, Multiwavelength analysis for interferometric (sub-)mm observations of protoplanetary disks. Radial constraints on the dust properties and the disk structure. Astron. Astrophys. 588, A53 (2016) CrossRefGoogle Scholar
  199. L. Testi, T. Birnstiel, L. Ricci, S. Andrews, J. Blum, J. Carpenter, C. Dominik, A. Isella, A. Natta, J.P. Williams, D.J. Wilner, Dust evolution in protoplanetary disks, in Protostars and Planets VI (2014), pp. 339–361 Google Scholar
  200. P.C. Thomas, J. Veverka, M.J.S. Belton, A. Hidy, M.F. A’Hearn, T.L. Farnham, O. Groussin, J.-Y. Li, L.A. McFadden, J. Sunshine, D. Wellnitz, C. Lisse, P. Schultz, K.J. Meech, W.A. Delamere, The shape, topography, and geology of Tempel 1 from Deep Impact observations. Icarus 187, 4–15 (2007) ADSCrossRefGoogle Scholar
  201. N. Thomas, H. Sierks, C. Barbieri, . co-authors, The morphological diversity of comet 67P/Churyumov-Gerasimenko. Science 347, aaa0440 (2015) CrossRefGoogle Scholar
  202. F. Trotta, L. Testi, A. Natta, A. Isella, L. Ricci, Constraints on the radial distribution of the dust properties in the CQ Tauri protoplanetary disk. Astron. Astrophys. 558, A64 (2013) ADSCrossRefGoogle Scholar
  203. K. Tsiganis, R. Gomes, A. Morbidelli, H.F. Levison, Origin of the orbital architecture of the giant planets of the solar system. Nature 435, 459–461 (2005) ADSCrossRefGoogle Scholar
  204. P.D. Tsou et al., Experiments on intact capture of hypervelocity particles. LPSC 15, 866–867 (1984). (Abstract) ADSGoogle Scholar
  205. R. van Boekel, M. Min, C. Leinert, L.B.F.M. Waters, A. Richichi, O. Chesneau, C. Dominik, W. Jaffe, A. Dutrey, U. Graser, T. Henning, J. de Jong, R. Köhler, A. de Koter, B. Lopez, F. Malbet, S. Morel, F. Paresce, G. Perrin, T. Preibisch, F. Przygodda, M. Schöller, M. Wittkowski, The building blocks of planets within the ‘terrestrial’ region of protoplanetary disks. Nature 432, 479–482 (2004) ADSCrossRefGoogle Scholar
  206. J. Veverka, K. Klaasen, M. A’Hearn, . co-authors, Return to comet Tempel 1: overview of Stardust-NExT results. Icarus 222, 424–435 (2013) ADSCrossRefGoogle Scholar
  207. E. Vilenius, C. Kiss, T. Müller, M. Mommert, P. Santos-Sanz, A. Pal, J. Stansberry, M. Mueller, N. Peixinho, E. Lellouch, S. Fornasier, A. Delsanti, A. Thirouin, J.L. Ortiz, R. Duffard, D. Perna, F. Henry, “TNOs are cool”: a survey of the trans-Neptunian region. X. Analysis of classical Kuiper belt objects from Herschel and Spitzer observations. Astron. Astrophys. 564, A35 (2014) ADSCrossRefGoogle Scholar
  208. J.-B. Vincent, D. Bodewits, S. Besse, . co-authors, Large heterogeneities in comet 67P as revealed by active pits from sinkhole collapse. Nature 523, 63–68 (2015) ADSCrossRefGoogle Scholar
  209. J.-B. Vincent, M.F. A’Hearn, Z.-Y. Lin, et al., Summer fireworks on comet 67P. Mon. Not. R. Astron. Soc. 462, 184–194 (2016b) CrossRefGoogle Scholar
  210. J.-B. Vincent, N. Oklay, M. Pajola, . co-authors, Are fractured cliffs the source of cometary dust jets? Insights from OSIRIS/Rosetta at 67P/Churyumov-Gerasimenko. Astron. Astrophys. 587, A14 (2016a) CrossRefGoogle Scholar
  211. K. Wada, H. Tanaka, T. Suyama, H. Kimura, T. Yamamoto, Numerical simulation of dust aggregate collisions. II. Compression and disruption of three-dimensional aggregates in head-on collisions. Astrophys. J. 677, 1296–1308 (2008) ADSCrossRefGoogle Scholar
  212. K. Wada, H. Tanaka, T. Suyama, H. Kimura, T. Yamamoto, Collisional growth conditions for dust aggregates. Astrophys. J. 702, 1490–1501 (2009) ADSCrossRefGoogle Scholar
  213. K. Wahlberg Jansson, A. Johansen, Formation of pebble-pile planetesimals. Astron. Astrophys. 570, A47 (2014) ADSCrossRefGoogle Scholar
  214. K. Wahlberg Jansson, A. Johansen, Radially resolved simulations of collapsing pebble clouds in protoplanetary discs. Mon. Not. R. Astron. Soc. 469, S149–S157 (2017) ADSCrossRefGoogle Scholar
  215. K. Wahlberg Jansson, A. Johansen, M. Bukhari Syed, J. Blum, The role of pebble fragmentation in planetesimal formation. II. Numerical simulations. Astrophys. J. 835, 109 (2017) ADSCrossRefGoogle Scholar
  216. H.A. Weaver, Not a rubble pile? Science 304, 1760–1762 (2004) CrossRefGoogle Scholar
  217. H.A. Weaver, Z. Sekanina, I. Toth, . co-authors, HST and VLT investigations of the fragments of Comet C/1999 S4 (LINEAR). Science 292, 1329–1334 (2001) ADSCrossRefGoogle Scholar
  218. H.A. Weaver, C.M. Lisse, M.J. Mutchler, P. Lamy, I. Toth, W.T. Reach, Hubble Space Telescope investigation of the disintegration of 73P/Schwassmann-Wachmann 3. Bull. Am. Astron. Soc. 38, 490 (2006) ADSGoogle Scholar
  219. S.J. Weidenschilling, Aerodynamics of solid bodies in the solar nebula. Mon. Not. R. Astron. Soc. 180, 57–70 (1977) ADSCrossRefGoogle Scholar
  220. S.J. Weidenschilling, The origin of comets in the solar nebula: a unifed model. Icarus 127, 290–306 (1997) ADSCrossRefGoogle Scholar
  221. R. Weidling, C. Güttler, J. Blum, F. Brauer, The physics of protoplanetesimal dust agglomerates. III. Compaction in multiple collisions. Astrophys. J. 696, 2036–2043 (2009) ADSCrossRefGoogle Scholar
  222. P.R. Weissman, Physical and dynamical evolution of long-period comets, in Dynamics of the Solar System, ed. by R.L. Duncombe (D. Reidel, Dordrecht, 1979), pp. 277–282 CrossRefGoogle Scholar
  223. P.R. Weissman, Physical loss of long-period comets. Astron. Astrophys. 85, 191–196 (1980) ADSGoogle Scholar
  224. P. Weissman, Cometary impacts on the terrestrial planets, in Conference on Planetary Volatiles. LPI Contribution, vol. 488 (1982), p. 109 Google Scholar
  225. P.R. Weissman, Cometary impacts with the Sun: physical and dynamical considerations. Icarus 55, 448–454 (1983) ADSCrossRefGoogle Scholar
  226. P.R. Weissman, Are cometary nuclei primordial rubble piles? Nature 320, 242–244 (1986) ADSCrossRefGoogle Scholar
  227. P.R. Weissman, Post-perihelion brightening of Halley’s Comet: spring time for Halley. Astron. Astrophys. 187(873), 878 (1987) ADSGoogle Scholar
  228. P.R. Weissman, in Comet Halley, Investigations, Results, Interpretations, vol. 2, ed. by J. Mason (1990), pp. 241–257 Google Scholar
  229. P.R. Weissman, S.C. Lowry, Structure and density of cometary nuclei. Meteorit. Planet. Sci. 43, 1033–1047 (2008) ADSCrossRefGoogle Scholar
  230. P.R. Weissman, W.F. Bottke, H.F. Levison, Evolution of comets into asteroids, in Asteroids III, ed. by W. Bottke, A. Cellino, P. Paolicchi, R. Binzel (Univ. Arizona Press, Tucson, 2002), pp. 669–686 Google Scholar
  231. P.R. Weissman, E. Asphaug, S.C. Lowry, Structure and density of cometary nuclei, in Comets II, ed. by M.C. Festou, U. Keller, H.A. Weaver (Univ. Arizona Press, Tucson, 2004), pp. 337–357 Google Scholar
  232. J.S. Wettlaufer, Accretion in protoplanetary disks by collisional fusion. Astrophys. J. 719, 540–549 (2010) ADSCrossRefGoogle Scholar
  233. F.L. Whipple, A comet model, I, the acceleration of comet Encke. Astrophys. J. 110, 375–394 (1950) ADSCrossRefGoogle Scholar
  234. F. Windmark, T. Birnstiel, C. Güttler, J. Blum, C.P. Dullemond, T. Henning, Planetesimal formation by sweep-up: how the bouncing barrier can be beneficial to growth. Astron. Astrophys. 540, A73 (2012a) ADSCrossRefGoogle Scholar
  235. F. Windmark, T. Birnstiel, C.W. Ormel, C.P. Dullemond, Breaking through: the effects of a velocity distribution on barriers to dust growth. Astron. Astrophys. 544, L16 (2012b) ADSCrossRefGoogle Scholar
  236. P. Wurz, M. Rubin, K. Altwegg, . co-authors, Solar wind sputtering from the surface of comet Churyumov-Gerasimenko. Astron. Astrophys. 583, A22 (2015) CrossRefGoogle Scholar
  237. T. Yamamoto, Formation history and environment of cometary nuclei, in Ices of the Solar System, ed. by J. Klinger, D. Benest, A. Dollfus, R. Smoluchowski. NATO ASI Series C: Mathematical and Physical Sciences, vol. 156 (1985), pp. 205–219 CrossRefGoogle Scholar
  238. C.-C. Yang, A. Johansen, D. Carrera, Concentrating small particles in protoplanetary disks through the streaming instability. Astron. Astrophys. 606, A80 (2017) CrossRefGoogle Scholar
  239. A.N. Youdin, J. Goodman, Streaming instabilities in protoplanetary disks. Astrophys. J. 620, 459–469 (2005) ADSCrossRefGoogle Scholar
  240. A. Zsom, C.W. Ormel, C. Güttler, J. Blum, C.P. Dullemond, The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? II. Introducing the bouncing barrier. Astron. Astrophys. 513, A57 (2010) ADSCrossRefGoogle Scholar
  241. B. Zuckerman, T. Foreille, J.H. Kastner, Inhibition of giant-planet formation by rapid gas depletion around young stars. Nature 373, 494–496 (1995) ADSCrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2020

Authors and Affiliations

  • Paul Weissman
    • 1
  • Alessandro Morbidelli
    • 2
  • Björn Davidsson
    • 3
  • Jürgen Blum
    • 4
  1. 1.Planetary Science InstituteTucsonUSA
  2. 2.Nice ObservatoryNiceFrance
  3. 3.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA
  4. 4.Institute for Geophysics and Extraterrestrial PhysicsTechnische UniversitätBraunschweigGermany

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