Space Science Reviews

, Volume 138, Issue 1–4, pp 165–177 | Cite as

Loss of the Surface Layers of Comet Nuclei

Open Access
Article

Abstract

The Deep Impact observations of low thermal inertia for comet 9P/Tempel 1 are of profound importance for the observations to be made by the Rosetta spacecraft at comet 67P/Churyumov-Gerasimenko. While sub-surface sublimation is necessary to explain the observations, the depth at which this occurs is no more than 2–3 cm and possibly less. The low thermal conductivity when combined with local surface roughness (also observed with Deep Impact) implies that local variations in outgassing rates can be substantial. These variations are likely to be on scales smaller than the resolution limits of all experiments on the Rosetta orbiter. The observed physico-chemical inhomogeneity further suggests that the Rosetta lander will only provide a local snapshot of conditions in the nucleus layer.

Keywords

Comets: surface Comets: nuclei Comets: emission 

References

  1. M.F. A’Hearn et al., Science 310, 258 (2005) CrossRefADSGoogle Scholar
  2. A.T. Basilevsky, H.U. Keller, Planet. Space Sci. 54, 808 (2006) CrossRefADSGoogle Scholar
  3. M.J.S. Belton et al., Icarus 187, 332 (2007) CrossRefADSGoogle Scholar
  4. D.T. Britt et al., Icarus 167, 45 (2004) CrossRefADSGoogle Scholar
  5. D.E. Brownlee et al., Science 304, 1764 (2004) CrossRefADSGoogle Scholar
  6. J. Clairemidi, G. Moreels, V.A. Krasnopolsky, Icarus 86, 115 (1990) CrossRefADSGoogle Scholar
  7. B. Dziak-Jankowska, J. Leliwa-Kopystyński, M.E. Królikowska, Earth, Moon, Planets 90, 35 (2002) CrossRefADSGoogle Scholar
  8. T.L. Farnham, N.H. Samarasinha, B.E.A. Mueller, M.M. Knight, Astron. J. 133, 2001 (2007) CrossRefADSGoogle Scholar
  9. O. Groussin et al., Icarus 187, 16 (2007) CrossRefADSGoogle Scholar
  10. F. Henry, D. Bockelée-Morvan, J. Crovisier, J. Wink, Earth, Moon, Planets 90, 57 (2002) CrossRefADSGoogle Scholar
  11. T.-M. Ho, N. Thomas, D.C. Boice, M. Combi, L.A. Soderblom, V. Tenishev, Planet. Space Sci. 55, 974 (2007) CrossRefADSGoogle Scholar
  12. W.F. Huebner, J. Benkhoff, M.T. Capria, A. Coradini, C. De Sanctis, R. Orosei, D. Prialnik, Heat and gas diffusion in comet nuclei. ISSI Scientific Report, SR-004, 2006, ISBN 1608-280X Google Scholar
  13. A. Ivanova, L. Shulman, Earth, Moon, Planets 90, 249 (2002) CrossRefADSGoogle Scholar
  14. A.V. Ivanova, L.M. Shulman, Adv. Space Res. 38, 1932 (2006) CrossRefADSGoogle Scholar
  15. H.U. Keller et al., Space Sci. Rev. 26 (2007) Google Scholar
  16. H.U. Keller, J. Knollenberg, W.J. Markiewicz, Planet. Space Sci. 42, 367 (1994) CrossRefADSGoogle Scholar
  17. H.U. Keller, W. Curdt, J.R. Kramm, N. Thomas, Images of the Nucleus of Comet Halley. ESA-SP 1127, vol. 1, 1996 Google Scholar
  18. Y. Kitamura, Icarus 66, 241 (1986) CrossRefADSGoogle Scholar
  19. Y. Kitamura, Icarus 72, 555 (1987) CrossRefADSGoogle Scholar
  20. J. Knollenberg, Ph.D. Thesis. Univ. Göttingen, 1994 Google Scholar
  21. K.J. Kossacki, W.J. Markiewicz, M.D. Smith, Planet. Space Sci. 51, 569 (2003) CrossRefADSGoogle Scholar
  22. K.J. Kossacki, J. Leliwa-Kopystyński, S. Szutowicz, Icarus 184, 221 (2006) CrossRefADSGoogle Scholar
  23. R.L. Millis, D.G. Schleicher, Nature 324, 646 (1986) CrossRefADSGoogle Scholar
  24. R.M. Nelson, L.A. Soderblom, B.W. Hapke, Icarus 167, 37 (2004) CrossRefADSGoogle Scholar
  25. R. Orosei, F. Capaccioni, M.T. Capria, A. Coradini, M.C.D. Sanctis, C. Federico, M. Salomone, J.-P. Huot, Planet. Space Sci. 47, 839 (1999) CrossRefADSGoogle Scholar
  26. A.V. Rodionov, L. Jorda, G.H. Jones, J.F. Crifo, F. Colas, J. Lecacheux, Icarus 136, 232 (1998) CrossRefADSGoogle Scholar
  27. R. Schulz, Icarus 96, 198 (1992) CrossRefADSGoogle Scholar
  28. L.A. Soderblom et al., Science 296, 1087 (2002) CrossRefADSGoogle Scholar
  29. J.R. Spencer, L.A. Lebofsky, M.V. Sykes, Icarus 78, 337 (1989) CrossRefADSGoogle Scholar
  30. J.M. Sunshine et al., Science 311, 1453 (2006) CrossRefADSGoogle Scholar
  31. P.C. Thomas et al., Icarus 187, 4 (2007) CrossRefADSGoogle Scholar
  32. R.V. Yelle, L.A. Soderblom, J.R. Jokipii, Icarus 167, 30 (2004) CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Physikalisches InstitutUniversität BernBernSwitzerland
  2. 2.Jet Propulsion LaboratoryPasadenaUSA
  3. 3.Max-Planck-Institut für SonnensystemforschungKatlenburg-LindauGermany

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