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Cometary Photometry

  • D. Jewitt
Part of the Astrophysics and Space Science Library book series (ASSL, volume 167)

Abstract

The study of comets using modern optical photometric techniques is reviewed. Particular emphasis is given to the physical constraints imposed on the nature of comets by photometric data. The photometric study of bare nuclei and of active comets is discussed.

Keywords

Charge Couple Device Radiation Pressure Surface Brightness Heliocentric Distance Solar Radiation Pressure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. A’Hearn, M.F. (1982). ‘Spectrophotometry of Comets at Optical Wavelengths,’ in Comets, edited by L.L. Wilkening, University of Arizona Press, Tucson, pp. 433–460.Google Scholar
  2. A’Hearn, M.F. (1983). ‘Photometry of Comets,’ in Solar System Photometry Handbook, edited by R. Genet, Willmann-Bell, Richmond, Virginia, p. 3–1.Google Scholar
  3. A’Hearn, M.F., Millis, R.L., and Birch, P.V. (1981). ‘Comet Bradfield 1979X: The Gassiest Comet?’, Astron. J., 86, 1559–1566.ADSCrossRefGoogle Scholar
  4. A’Hearn, M.F., Schleicher, D.G., Feldman, P.D., Millis, R.L., and Thompson, D.T. (1984). ‘Comet Bowell 1980b,’ Astron. J., 89, 579–591.ADSCrossRefGoogle Scholar
  5. A’Hearn, M.F., Hoban, S., Birch, P.V., Bowers, C., Martin, R., and Klinglesmith, D.A. (1986a). ‘CN Jets in Comet P/Halley,’ Nature, 324, 649–651.ADSCrossRefGoogle Scholar
  6. A’Hearn, M.F., Hoban, S., Birch, P.V., Bowers, C., Martin, R., and Klinglesmith, D.A. (1986b). ‘Gaseous Jets in Comet P/Halley,’ in 20th ESLAB Symposium, ESA SP-250, Heidelberg, pp. 483–486.Google Scholar
  7. A’Hearn, M.F., Campins, H., Schleicher, D.G., and Millis, R.L. (1989). ‘The Nucleus of P/Tempel 2,’ Astrophys. J., 347, 1155–1166.ADSCrossRefGoogle Scholar
  8. Altenhoff, W.J., Huchtmeier, W.K., Schmidt, J., Schraml, J.B., Stumpff, P., and Thum, C. (1986). ‘Radio Continuum Observations of Comet Halley,’ Astron. Astrophys., 164, 227–230.ADSGoogle Scholar
  9. Baum, W.A., and Kreidl, T.J. (1986). ‘Volatiles in Cometary Grains,’ in Asteroids, Comets, Meteors IL edited by C.-I. Lagerkvist, B.A. Lindblad, H. Lundstedt, and H. Rickman, Uppsala University Press, Uppsala, pp. 397–402.Google Scholar
  10. Baum, W.A., Thomsen, B., and Kreidl, T.J. (1981). ‘Subtleties in the Flat-Fielding of CCD Images,’ in Solid State Imagers for Astronomy, Proc. Int. Soc. Opt. Eng., 290, 24–27.ADSCrossRefGoogle Scholar
  11. Belton, M.J.S. (1990). ‘Rationalization of Halley’s Periods: Evidence for an Inhomogeneous Nucleus?’, Icarus, in press.Google Scholar
  12. Boehnhardt, H., and Fechtig, H. (1987). ‘Electrostatic Charging and Fragmentation of Dust Near P/Giacobini-Zinner and P/Halley,’ Astron. Astrophys., 187, 824–828.ADSGoogle Scholar
  13. Bowell, E., Hapke, B., Domingue, D., Lumme, K., Peltoniemi, J., and Harris, A.W. (1989). ‘Application of Photometric Models to Asteroids,’ in Asteroids II. edited by R.P. Binzel, T. Gehrels, and M.S. Matthews, University of Arizona Press, Tucson, pp. 524–556.Google Scholar
  14. Burns, J.A., Lamy, P.L., and Soter, S. (1979). ‘Radiation Forces in the Solar System,’ Icarus, 40, 1–48.ADSCrossRefGoogle Scholar
  15. Campins, H., A’Hearn, M.F., and McFadden, L. (1987). ‘The Bare Nucleus of Comet P/Neujmin 1,’ Astrophys. J., 316, 847–857.ADSCrossRefGoogle Scholar
  16. Cochran, A. (1985). ‘A Re-Evaluation of the Haser Model Scale Lengths for Comets,’ Astron. J., 90, 2609–2614.ADSCrossRefGoogle Scholar
  17. Combi, M.R. (1987). ‘Sources of Cometary Radicals and Their Jets: Gases or Grains?’, Icarus, 71, 178–191.ADSCrossRefGoogle Scholar
  18. Combi, M.R., and Smyth, W.H. (1988). ‘Monte Carlo Particle-Trajectory Models for Neutral Cometary Gases. I. Models and Equations,’ Astrophys. J., 327, 1026–1043.ADSCrossRefGoogle Scholar
  19. Delsemme, A.H. (1976). ‘The Neutral Coma of Comets: A Review,’ in The Study of Comets, edited by B. Donn, M. Mumma, W. Jackson, M. A’Hearn, and R. Harrington, NASA SP-393, U.S. Government Printing Office, Washington, D.C., pp. 711–737.Google Scholar
  20. Delsemme, A.H. (1982). ‘Chemical Composition of Cometary Nuclei,’ in Comets, edited by L.L. Wilkening, University of Arizona Press, Tucson, pp. 85–130.Google Scholar
  21. Delsemme, A.H. (1985). ‘The Sublimation Temperature of the Cometary Nucleus,’ in Ices in the Solar System, edited by J. Klinger, D. Benest, A. Dollfus, and R. Smoluchowski, NATO Advanced Science Institutes Series, C 156, D. Reidel Pub. Co., Dordrecht, p. 367.CrossRefGoogle Scholar
  22. Delsemme, A.H., and Miller, D.C. (1971). ‘Physico-Chemical Phenomena in Comets— III. The Continuum of Comet Burnham (1960 II),’ Planet. Space Sci., 19, 1229–1257.ADSCrossRefGoogle Scholar
  23. Dermott, S.F., Harris, A.W., and Murray, C.D. (1984). ‘Asteroid Rotation Rates,’ Icarus, 57, 14–34.ADSCrossRefGoogle Scholar
  24. Dollfus, A., and Suchail, J.-L. (1987). ‘Polarimetry of Grains in the Coma of Comet P/Halley. I. Observations,’ Astron. Astrophys., 187, 669–688.ADSGoogle Scholar
  25. Eddington, A.S. (1910). ‘The Envelopes of Comet Morehouse (1908c),’ M. N. R. A. S., 70, 442–458.ADSGoogle Scholar
  26. Fanale, F.P., and Salvail, J.R. (1984). ‘An Idealized Short-Period Comet Model: Surface Insolation, H2O Flux, Dust Flux, and Mantle Evolution,’ Icarus, 60, 476–511.ADSCrossRefGoogle Scholar
  27. Fay, T.D., and Wisniewski, W. (1978). ‘The Lightcurve of the Nucleus of Comet d’Arrest,’ Icarus, 34, 1–9.ADSCrossRefGoogle Scholar
  28. Feldman, P.D., A’Hearn, M.F., and Millis, R.L. (1984). ‘Temporal and Spatial Behavior of the Ultraviolet Emissions of Comet IRAS-Araki-Alcock 1983d,’ Astrophys. J., 282, 799–802.ADSCrossRefGoogle Scholar
  29. Festou, M.C. (1981). ‘The Density Distribution of Neutral Compounds in Cometary Atmospheres. I. Models and Equations,’ Astron. Astrophys., 95, 69–79.ADSGoogle Scholar
  30. Festou, M.C., and Feldman, P.D. (1981). ‘The Forbidden Oxygen Lines in Comets,’ Astron. Astrophys., 103, 154–159.ADSGoogle Scholar
  31. Finson, M.L., and Probstein, R.F. (1968). ‘A Theory of Dust Comets. I. Model and Equations,’ Astrophys. J., 154, 327–352.ADSCrossRefGoogle Scholar
  32. Fort, B. (1985). ‘New Trends in CCD Photometry of Galaxies,’ in New Aspects of Galaxy Photometry, edited by H. Araki, Springer-Verlag, Berlin, pp. 3–12.Google Scholar
  33. Fulle, M. (1989). ‘Evaluation of Cometary Dust Parameters From Numerical Simulations: Comparison With Analytical Approach and Role of Anisotropic Emissions,’ Astron. Astrophys., 217, 283–297.ADSGoogle Scholar
  34. Gammelgaard, P., and Thomsen, B. (1988). ‘C2, H2O+, and Dust Distribution in Comet P/Halley Near Opposition,’ Astron. Astrophys., 197, 320–326.ADSGoogle Scholar
  35. Goldstein, R.M., Jurgens, R.F., and Sekanina, Z. (1984). ‘A Radar Study of Comet 1983d,’ Astron. J., 89, 1745–1754.ADSCrossRefGoogle Scholar
  36. Gombosi, T.I. (1986). ‘A Heuristic Model of the Comet Halley Dust Size Distribution,’ in 20th ESLAB Symposium, ESA SP-250, Heidelberg, pp. 167–171.Google Scholar
  37. Gunn, J., and Westphal, J.A. (1981). ‘Care, Feeding, and Use of Charge-Coupled Device (CCD) Imagers at Palomar Observatory,’ in Solid State Imagers for Astronomy. Proc. Int. Soc. Opt. Eng., 290, 16–23.ADSCrossRefGoogle Scholar
  38. Hanner, M.S. (1981). ‘On the Detectability of Icy Grains in the Comae of Comets,’ Icarus, 47, 342–350.ADSCrossRefGoogle Scholar
  39. Hanner, M.S., and Newburn, R. (1989). ‘Infrared Photometry of Comet Wilson (1986l) at Two Epochs,’ Astron. J., 97, 254–261.ADSCrossRefGoogle Scholar
  40. Hartmann, W.K., and Cruikshank, D. (1984). ‘Comet Color Changes With Solar Distance,’ Icarus, 57, 55–62.ADSCrossRefGoogle Scholar
  41. Haser, L. (1957). ‘Distribution D’Intensitie Dans la Tete d’une Comete,’ Bull. Acad. Roy. Sci. Liege, 43, 740.MathSciNetADSzbMATHGoogle Scholar
  42. Haser, L. (1966). ‘Calcul de Distribution D’Intensitie Relative Dans une Tete Cometaire,’ Mem. Soc. Roy. Sci. Liege, XII, 233–242.Google Scholar
  43. Hellmich, R., and Keller, H.U. (1981). ‘On the Visibility of Nuclei of Dusty Comets,’ Icarus, 47, 325–332.ADSCrossRefGoogle Scholar
  44. Hoban, S., Samarasinha, N.H., A’Hearn, M.F., and Klinglesmith, D.A. (1988). ‘An Investigation Into Periodicities of CN Jets in Comet P/Halley,’ Astron. Astrophys., 195, 331–337.ADSGoogle Scholar
  45. Hoban, S., A’Hearn, M.F., Birch, P.V., and Martin, R. (1989). ‘Spatial Structure in the Color of the Dust Coma of Comet P/Halley,’ Icarus, 79, 145–158.ADSCrossRefGoogle Scholar
  46. Isserstedt, J., and Schlosser, W. (1975). ‘Intensity Fluctuations in the Head of Comet 1973f,’ Astron. Astrophys., 41, 9–13.ADSGoogle Scholar
  47. Jewitt, D.C. (1990). ‘The Persistent Coma of Comet P/Schwassmann-Wachmann 1,’ Astrophys. J., in press.Google Scholar
  48. Jewitt, D.C., and Danielson, G.E. (1984). ‘Charge Coupled Device Photometry of Comet P/Halley,’ Icarus, 60, 435–444.ADSCrossRefGoogle Scholar
  49. Jewitt, D.C., and Luu, J.X. (1989). ‘A CCD Portrait of Comet P/Tempel 2,’ Astron. J., 97, 1766–1790.ADSCrossRefGoogle Scholar
  50. Jewitt, D.C., and Meech, K.J. (1985). ‘Rotation of the Nucleus of P/Arend-Rigaux,’ Icarus, 64, 329–335.ADSCrossRefGoogle Scholar
  51. Jewitt, D.C., and Meech, K.J. (1986). ‘Cometary Grain Scattering Versus Wavelength, or, “What Color Is Comet Dust?”,’ Astrophys. J., 310, 937–952.ADSCrossRefGoogle Scholar
  52. Jewitt, D.C., and Meech, K.J. (1987a). ‘Surface Brightness Profiles of 10 Comets,’ Astrophys. J., 317, 992–1001.ADSCrossRefGoogle Scholar
  53. Jewitt, D.C., and Meech, K.J. (1987b). ‘CCD Photometry of Comet P/Encke,’ Astron. J., 93, 1542–1548.ADSCrossRefGoogle Scholar
  54. Jewitt, D.C., and Meech, K.J. (1988a). ‘The Absence of a Color-Distance Trend in Comets,’ Astron. J., 96, 1723–1730.ADSCrossRefGoogle Scholar
  55. Jewitt, D.C., and Meech, K.J. (1988b). ‘Optical Properties of Cometary Nuclei and a Preliminary Comparison With Asteroids,’ Astrophys. J., 328, 974–986.ADSCrossRefGoogle Scholar
  56. Keller, H.U., et al. (1987). ‘Comet Halley’s Nucleus and Its Activity,’ Astron. Astrophys., 187, 807–823.ADSGoogle Scholar
  57. Kiselev, N.N., and Chernova, G.P. (1981). ‘Phase Functions of Polarization and Brightness and the Nature of Cometary Atmosphere Particles,’ Icarus, 48, 473–481.ADSCrossRefGoogle Scholar
  58. Lamy, P.L. (1986). ‘Cometary Dust: Observational Evidences and Properties,’ in Asteroids, Comets, Meteors IL edited by C.-I. Lagerkvist, B.A. Lindblad, H. Lundstedt, and H. Rickman, Uppsala University Press, Uppsala, pp. 373–388.Google Scholar
  59. Lamy, P.L. (1989). Presentation at “Comets in the Post-Halley Era,” Bamberg.Google Scholar
  60. Lamy, P.L., and Perrin, J.-M. (1988). ‘Optical Properties of Organic Grains: Implications for Interplanetary and Cometary Dust,’ Icarus, 76, 100–109.ADSCrossRefGoogle Scholar
  61. Lamy, P.L., Pederson, H., and Vio, R. (1987). ‘The Dust Tail of Comet P/Halley in April 1986,’ Astron. Astrophys., 187, 661–664.ADSGoogle Scholar
  62. Lamy, P.L., Malburet, P., Llebaria, A., and Koutchmy, S. (1989). ‘Comet P/Halley at a Heliocentric Preperihelion Distance of 2.6 AU: Jet Activity and Properties of the Coma,’ Astron. Astrophys., 222, 316–322.ADSGoogle Scholar
  63. Larson, S.M. (1986). ‘A Review of Some Digital Image Processing in Cometary Research,’ in Asteroids, Comets, Meteors IL edited by C.-I. Lagerkvist, B.A. Lindblad, H. Lundstedt, and H. Rickman, Uppsala University Press, Uppsala, pp. 449–459.Google Scholar
  64. Larson, S.M., and A’Hearn, M.F. (1984). ‘Comet Bowell (1980b): Measurement of the Optical Thickness of the Coma and Particle Albedo From Stellar Occultation,’ Icarus, 58, 446–450.ADSCrossRefGoogle Scholar
  65. Larson, S.M., and Sekanina, Z. (1984). ‘Coma Morphology and Dust Emission Pattern of P/Halley. I. High Resolution Images Taken at Mount Wilson in 1910,’ Astron. J., 89, 571–578.ADSCrossRefGoogle Scholar
  66. Larson, S.M., Sekanina, Z., Levy, D., Tapia, S., and Senay, M. (1987). ‘Comet P/Halley Near-Nucleus Phenomena in 1986,’ Astron. Astrophys., 187, 639–644.ADSGoogle Scholar
  67. Luppino, G.A. (1989). ‘A Virtual Phase CCD Camera for MDM Observatory,’ P. A. S.P., 101, 931–939.ADSCrossRefGoogle Scholar
  68. Lutz, B.L., and Wagner, R.M. (1986). ‘Temporal Variability of Comet IRAS-ARAKI-ALCOCK 1983d: The May 10 Event,’ Astrophys. J., 308, 993–1000.ADSCrossRefGoogle Scholar
  69. Luu, J.X. (1988). ‘The Scale Lengths of Molecules in P/Halley,’ unpublished manuscript.Google Scholar
  70. Luu, J.X., and Jewitt, D.C. (1990). ‘The Nucleus of Comet P/Encke,’ Icarus, in press.Google Scholar
  71. Massonne, L., Fertig, J., Grün, E., and Schwehm, G. (1986). ‘A Cometary Dust Environment Model for the Generation of Synthetic Images,’ in Asteroids, Comets, Meteors IL edited by C.-I. Lagerkvist, B.A. Lindblad, H. Lundstedt, and H. Rickman, Uppsala University Press, Uppsala, pp. 407–410.Google Scholar
  72. McDonnell, J.A.M., Pankiewicz, G.S., Birchley, P.N.W., Green, S.F., and Perry, C.H. (1989). ‘The Comet Nucleus: Ice and Dust Morphological Balances in a Production Surface of Comet P/Halley,’ submitted to Proc. XXth L. P. S. C.Google Scholar
  73. McFadden, L.A., A’Hearn, M.F., Feldman, P.D., Roettger, E.E., Edsall, D.M., and Butterworth, P.S. (1987). ‘Activity of Comet P/Halley 23–25 March, 1986: IUE Observations,’ Astron. Astrophys., 187, 333–338.ADSGoogle Scholar
  74. Meech, K.J., and Jewitt, D.C. (1987). ‘Observations of Comet P/Halley at Minimum Phase Angle,’ Astron. Astrophys., 187, 585–593.ADSGoogle Scholar
  75. Meech, K.J., Jewitt, D.C., and Ricker, G. (1986). ‘Early Photometry of Comet P/Halley: Development of the Coma,’ Icarus, 66, 561–574.ADSCrossRefGoogle Scholar
  76. Meisel, D.D., and Morris, C.S. (1982). ‘Comet Head Photometry: Past, Present and Future,’ in Comets, edited by L.L. Wilkening, University of Arizona Press, Tucson, pp. 413–432.Google Scholar
  77. Mendis, D.A., and Ip, W.-H. (1976). ‘The Neutral Atmospheres of Comets,’ Astrophys. Space Sci., 39, 335–385.ADSCrossRefGoogle Scholar
  78. Meredith, N.P., Wallis, M.K., and Rees, D. (1989). ‘The Anomalous Behavior of C2 in P/Borrelly 1987p,’ M. N. R. A. S., 240, 647–655.ADSGoogle Scholar
  79. Millis, R.L., and Schleicher, D.G. (1986). ‘Rotational Period of Comet Halley,’ Nature, 324, 646–649.ADSCrossRefGoogle Scholar
  80. Millis, R.L., A’Hearn, M.F., and Thompson, D.T. (1982). ‘Narrowband Photometry of Comet P/Stephan-Oterma and the Backscattering Properties of Cometary Grains,’ Astron. J., 87, 1310–1317.ADSCrossRefGoogle Scholar
  81. Millis, R.L., A’Hearn, M.F., and Campins, H. (1988). ‘An Investigation of the Nucleus and Coma of Comet P/Arend-Rigaux,’ Astrophys. J., 324, 1194–1209.ADSCrossRefGoogle Scholar
  82. Mukai, T., Mukai, S., Fechtig, H., Grun, E., and Giese, R.H. (1985). ‘Dirty Ice Grains in Comets,’ Adv. Space Res., 5, 339–342.ADSCrossRefGoogle Scholar
  83. Neckel, T., and Munch, G. (1987). ‘Photometry of Comet Halley at Near Post-Perihelion Phases,’ Astron. Astrophys., 187, 581–584.ADSGoogle Scholar
  84. Newburn, R., and Spinrad, H. (1985). ‘Spectrophotometry of Seventeen Comets II. The Continuum,’ Astron. J., 90, 2591–2608.ADSCrossRefGoogle Scholar
  85. Newburn, R., and Spinrad, H. (1989). ‘Spectrophotometry of 25 Comets,’ Astron. J., 97, 552–569.ADSCrossRefGoogle Scholar
  86. Ney, E.P. (1982). ‘Visibility of Comet Nuclei,’ Science, 215, 397–398.ADSCrossRefGoogle Scholar
  87. Ney, E.P., and Merrill, K. (1976). ‘Comet West and the Phase Function of Cometary Dust,’ Science, 194, 1051–1053.ADSCrossRefGoogle Scholar
  88. Notni, P., and Tiersch, H. (1987). ‘Charging of Dust Particles in Comets and in Interplanetary Space,’ Astron. Astrophys., 187, 796–800.ADSGoogle Scholar
  89. O’Dell, C.R. (1971). ‘Nature of Particulate Matter in Comets as Determined From Infrared Observations,’ Astrophys. J., 166, 675–681.ADSCrossRefGoogle Scholar
  90. O’Dell, C.R., Robinson, R.R., Krishna Swamy, K.S., McCarthy, P.J., and Spinrad, H. (1988). ‘C2 in Comet Halley: Evidence for Its Being Third Generation and Resolution of the Vibrational Population Discrepancy,’ Astrophys. J., 334, 476–488.ADSCrossRefGoogle Scholar
  91. Öpik, E.J. (1963). ‘Photometry, Dimensions and Ablation Rate of Comets,’ Irish Astr. J., 6, 93–112.ADSGoogle Scholar
  92. Öpik, E.J. (1975). ‘On Predicting the Brightness of Comets,’ in Comet Kohoutek, edited by G.A. Gary, NASA SP-355, Washington, D.C., pp. 205–207.Google Scholar
  93. Padgham, C.A., and Saunders, J.E. (1975). The Perception of Light and Colour, G. Bell and Sons, London.Google Scholar
  94. Rees, D., Meredith, N.P., and Wallis, M.K. (1986). ‘Optical Observations of the Neutral and Ion Coma of Comet Halley,’ in 20th ESLAB Symposium. ESA SP-250, Heidelberg, pp. 493–498.Google Scholar
  95. Rettig, T.W., Kern, J.R., Ruchti, R., Baumbaugh, B., Baumbaugh, A.E., Knickerbocker, A.E., and Dawe, J. (1987). ‘Observations of the Coma of Comet P/Halley and the Outburst of 1986 March 24–25 (UT),’ Astron. Astrophys., 187, 249–255.ADSGoogle Scholar
  96. Roemer, E. (1966a). ‘Cometary Nuclei—Introductory Report,’ Mem. Soc. Roy. Sci. Liege, XII, 15–22.Google Scholar
  97. Roemer, E. (1966b). ‘The Dimensions of Cometary Nuclei,’ Mem. Soc. Roy. Sci. Liege, XII, 23–28.Google Scholar
  98. Roemer, E. (1976). ‘Luminosity and Astrometry of Comets: A Review,’ in The Study of Comets, edited by B. Donn, M. Mumma, W. Jackson, M. A’Hearn, and R. Harrington, NASA SP-393, U.S. Government Printing Office, Washington, D.C., pp. 380–409.Google Scholar
  99. Russell, H.N. (1916). ‘On the Albedo of the Planets and Their Satellites,’ Astrophys. J., 43, 173–195.ADSCrossRefGoogle Scholar
  100. Salo, H. (1988). ‘Monte Carlo MO’Delling of the Net Effects of Coma Scattering and Thermal Reradiation on the Energy Input to the Cometary Nucleus,’ Icarus, 76, 253–269.ADSCrossRefGoogle Scholar
  101. Schleicher, D.G., Millis, R.L., and Birch, P.V. (1987). ‘Photometric Observations of Comet P/Giacobini-Zinner,’ Astron. Astrophys., 187, 531–538.ADSGoogle Scholar
  102. Sekanina, Z. (1976). ‘A Continuing Controversy: Has the Cometary Nucleus Been Resolved?’, in The Study of Comets, edited by B. Donn, M. Mumma, W. Jackson, M. A’Hearn, and R. Harrington, NASA SP-393, U.S. Government Printing Office, Washington, D.C., pp. 537–587.Google Scholar
  103. Sekanina, Z. (1987). ‘Anisotropic Emission From Comets: Fans Versus Jets I. Concept and Modeling,’ in Symposium on the Diversity and Similarity of Comets, ESA SP-278, Brussels, Belgium.Google Scholar
  104. Sekanina, Z., and Farrell, J.A. (1982). ‘Two Dust Populations of Particle Fragments in the Striated Tail of Comet Mrkos 1957 V,’ Astron. J., 87, 1836–1853.ADSCrossRefGoogle Scholar
  105. Simpson, J.A., Rabinowitz, D., Tuzzolino, A.J., Ksanfomality, L.V., and Sagdeev, R.Z. (1987). ‘The Dust Coma of Comet P/Halley: Measurements on the Vega-1 and Vega-2 Spacecraft,’ Astron. Astrophys., 187, 742–752.ADSGoogle Scholar
  106. Smoluchowski, R. (1985). ‘Amorphous and Porous Ices in Cometary Nuclei,’ in Ices in the Solar System, edited by J. Klinger, D. Benest, A. Dollfus, and R. Smoluchowski, NATO Advanced Science Institutes Series, C 156, D. Reidel Pub. Co., Dordrecht, pp. 397–406.CrossRefGoogle Scholar
  107. Thomas, N., and Keller, H.U. (1989). ‘The Colour of Comet P/Halley’s Nucleus and Dust,’ Astron. Astrophys., 213, 487–494.ADSGoogle Scholar
  108. van de Hulst, H.C. (1957). Light Scattering by Small Particles. Wiley, New York.Google Scholar
  109. Vaisberg, O.L., Smirnov, V., Omelchenko, A., Gorn, L., and Iovlev, M. (1987). ‘Spatial and Mass Distribution of Low-Mass Dust Particles (m < 10-10 kg) in Comet P/Halley’s Coma,’ Astron. Astrophys., 187, 753–760.ADSGoogle Scholar
  110. Wallace, L.V., and Miller, F.D. (1958). ‘Isophote Configurations for Model Comets,’ Astron. J., 63, 213–219.ADSCrossRefGoogle Scholar
  111. Wallis, M.K., Rabilizirov, R., and Wickramasinghe, N.C. (1987). ‘Evaporating Grains in P/Halley’s Coma,’ Astron. Astrophys., 187, 801–806.ADSGoogle Scholar
  112. Weissman, P.R. (1988). ‘Why Was Halley’s Comet So Bright?’, B. A. A. S., 20, 825.ADSGoogle Scholar
  113. Weissman, P.R., and Kieffer, H.H. (1981). ‘Thermal MO’Delling of Cometary Nuclei,’ Icarus, 47, 302–311.ADSCrossRefGoogle Scholar
  114. West, R.N., and Jorgenson, H.E. (1989). ‘Post-Perihelion Observations of Comet P/Halley at R = 8.5 AU,’ Astron. Astrophys., 218, 307–316.ADSGoogle Scholar
  115. West, R.N., Pedersen, H., Monderen, P., Vio, R., and Grosbol, P. (1986). ‘Post-Perihelion Imaging of Comet Halley at ESO,’ Nature, 321, 363–365.ADSCrossRefGoogle Scholar
  116. Whipple, F.L. (1978). ‘Cometary Brightness Variation and Nucleus Structure,’ Moon and Planets, 18, 343–359.ADSCrossRefGoogle Scholar
  117. Whipple, F.L. (1980). ‘Rotation and Outbursts of Comet P/SW1,’ Astron. J., 85, 305–313.ADSCrossRefGoogle Scholar
  118. Whipple, F.L. (1982). ‘The Rotation of Comets,’ in Comets, edited by L.L. Wilkening, University of Arizona Press, Tucson, pp. 227–250.Google Scholar
  119. Whipple, F.L. (1989). ‘Comets in the Space Age,’ Astrophys. J., 341, 1–15.ADSCrossRefGoogle Scholar
  120. Whipple, F.L., and Sekanina, Z. (1979). ‘Comet Encke: Precession of the Spin Axis, Non-Gravitational Motion, and Sublimation,’ Astron. J., 84, 1894–1909.ADSCrossRefGoogle Scholar
  121. Wilhelm, K. (1986). ‘Rotation and Precession of Comet Halley,’ Nature, 327, 27–30.ADSCrossRefGoogle Scholar
  122. Wyckoff, S., Wagner, R.M., Wehinger, P.A., Schleicher, D.G., and Festou, M.C. (1985). ‘Onset of Sublimation in Comet P/Halley (1982i),’ Nature, 316, 241–242.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1991

Authors and Affiliations

  • D. Jewitt
    • 1
  1. 1.Institute for AstronomyUniversity of HawaiiHonoluluUSA

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