Abstract
The sudden appearance of a bright comet stretching over a large part of the night sky must have been one of the most awesome phenomena for early humans watching the sky. The nature of comets remained obscure well into the Middle Ages. Only with the introduction of astronomical techniques and analyses in Europe was the parallax of a comet determined by Tycho Brahe for the first time. He proved that comets are not phenomena of the Earth’s atmosphere but are farther away than the Moon; in other words they are interplanetary objects. Later Kepler first predicted that comets follow straight lines, then Hevelius suggested parabolic orbits roughly a hundred years later. It was Halley who suggested that the comets of the years 1531, 1607 and 1682 were apparitions of one and the same comet that would return again in 1758. The success of this prediction made it clear that comets are members of our Solar System.
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References
A’Hearn, M.F. (1988). Observations of cometary nuclei. Annual Review of Earth and Planetary Sciences, 16, 273–293.
A’Hearn, M.F., Campins, H., Schleicher, D.G. and Millis, R.L. (1989). The nucleus of comet P/Tempel 2. Astrophysical Journal, 347, 1155–1166.
Altenhoff, W.J. and Stumpff, P. (1995). Size estimate of ‘asteroid’ 2060 Chiron from 250 GHz measurements. Astronomy and Astrophysics, 293, L41–L42.
Asphaug, E. and Benz, W. (1996). Size, density, and structure of comet Shoemaker-Levy 9 inferred from the physics of tidal breakup. Icarus, 121, 225–248.
Bailey, M.E. (1983). The structure and evolution of the Solar System comet cloud. Monthly Notices of the Royal Astronomical Society, 204, 603–633.
Bailey, M.E. (1986). The mean energy transfer rate to comets in the Oort cloud and implications for cometary origins. Monthly Notices of the Royal Astronomical Society, 218, 1–30.
Bar-Nun, A., Dror, J., Kochavi, E., and Laufer, D. (1987). Amorphous water ice and its ability to trap gases. Physical Review B: Condensed Matter, 35, 2427–2435.
Belton, M.J.S., Julian, W.H., Anderson, A.J. and Mueller, B.E.A. (1991). The spin state and homogeneity of comet Halley’s nucleus. Icarus, 93, 183–193.
Biermann, L. and Michel, K.W. (1978). The origin of cometary nuclei in the presolar nebula. Moon and Planets, 18, 447–464.
Biermann, L. and Trefftz, E. (1964). Über die Mechanismen der Ionisation und der Anregung in Kometenatmosphären. Zeitschrift für Astrophysik, 59, 1–28.
Birkett, C.M., Green, S.F., Zarnecki, J.C. and Russell, K.S. (1987). Infrared and optical observations of low-activity comets, P/Arend-Rigaux (1984k) and P/Neujmin 1 (1984c). Monthly Notices of the Royal Astronomical Society, 225, 285–296.
Blum, J. (1995). Laboratory and space experiments to study pre-planetary growth. Advances in Space Research, 15, (10)39–(10)54.
Bowell, E. and Lume, K. (1979). Colorimetry and magnitudes of asteroids.In T. Gehrels (ed), Asteroids, University of Arizona Press, Tucson, AZ.
Bowell, E., West, R.M., Heyer, H.-H., Quebatte, J., Cunningham, L.E.,Bus, S.J., Harris, A.W., Millis, R.L. and Marsden, B.G. (1992). (4015) 1979 VA = Comet Wilson-Harrington (1949 III). IAU Circular 5585.
Bredichin, T. (1903). Mechanische Untersuchungen über Cometenformen in systematischer Darstellung, G. Hassel, Leipzig.
Brin, G.D. (1980). Three models of dust layers on cometary nuclei.Astrophysical Journal, 237, 265–279.
Brin, G.D. and Mendis, D.A. (1979). Dust release and mantle development in comets. Astrophysical Journal, 229, 402–408.
Brooke, T.Y. and Knacke, R.F. (1986). The nucleus of comet P/Arend Rigaux. Icarus, 67, 80–87.
Brown, M.E., Kulkarni, S.R. and Liggett, T.J. (1997). An analysis of the statistics of the Hubble Space Telescope Kuiper Belt object search.Astrophysical Journal of Letters, 490, L119–L122.
Burns, J.A. and Safronov, V.S. (1973). Asteroid nutation angles. Monthly Notices of the Royal Astronomical Society, 165, 403–411.
Bus, S.J., Buie, M.W., Schleicher, D.G., Hubbard, W.B., Larcialis, R.L., Hill,R., Wasserman, L.H., Spencer, J.R., Millis, R.L., Franz, O.G., Bosh, A.S.,Dunham, E.W., James, H.F., Young, J.W., Elliot, J.L. Meserole, R., Olkin,C.B., McDonald, S.W., Foust, J.A., Sopata, L.M. and Bandyopadhyay,R.M. (1996). Stellar occultation by 2060 Chiron. Icarus, 123, 478–490.
Campbell, D.B., Harmon, J.K. and Shapiro, I.I. (1989). Radar observations of comet halley. Astrophysical Journal, 338, 1094–1105.
Campins, H., A’Hearn, M.F. and McFadden, L.-A. (1987). The bare nucleus of comet Neujman 1. Astrophysical Journal, 316, 847–857.
Campins, H., Osip, D.J., Rieke, G.H. and Rieke, M.J. (1995). Estimates of the radius albedo of comet-asteroid transition object 4015 Wilson-Harrington based on infrared observations. Planetary and Space Science,43, 733–736.
Campins, H., Telesco, C.M., Osip, D.J., Rieke, G.H., Rieke, M.J. and Schulz, B. (1994). The color temperature of (2060) Chiron: A warm and small nucleus. Astronomical Journal, 108, 2318–2322.
Ceplecha, Z. and McCrosky, R.E. (1976). Fireball end heights: A diagnostic for the structure of meteoric material. Journal of Geophysical Research,81, 6257–6275.
Chen, J. and Jewitt, D. (1994). On the rate at which comets split. Icarus,108, 265–271.
Chokshi, A., Tielens, A.G.G.M. and Hollenbach, D. (1993). Dust coagulation. Astrophysical Journal, 407, 806–819.
Clube, S.V.M. and Napier, W.M. (1982). Spiral arms, comets and terrestrial catastrophism. Quarterly Journal of the Royal Astronomical Society, 23,45–66.
Cochran, A.L., Levison, H.F., Stern, S.A. and Duncan, M.J. (1995). The discovery of Halley-sized Kuiper belt objects using the Hubble Space Telescope. Astrophysical Journal, 455, 342–346.
Colom, P. and Gérard, E. (1988). A search for periodicities in the OH radio emission of comet P/Halley (1986 III). Astronomy and Astrophysics,204, 327–336.
Crifo, J.F. (1987). Improved gas-kinetic treatment of cometary water sublimation and recondensation: Application to comet P/Halley. Astronomy and Astrophysics, 187, 438–450.
Crifo, J.F. and Rodinov, A.V. (1997a). The dependence of the circumnuclear coma structure on the properties of the nucleus. I. Comparison between a homogeneous and an inhomogeneous spherical nucleus, with application to P/Wirtanen. Icarus, 127, 319–353.
Crifo, J.F. and Rodinov, A.V. (1997b). The dependence of the circumnuclear coma structure on the properties of the nucleus. II. First investigation of the coma surrounding an homogeneous, asperical nucleus.Icarus, 129, 72–93.
Crifo, J.F., Rodinov, A.V. and Bockelee-Morvan, D. (1999). The dependence of the circumnuclear coma structure on the properties of the nucleus. III.First modeling of a CO-dominated coma with application to comets 46 P/Wirtanen and 29 P/Schwassmann-Wachmann 1. Icarus, 138, 85–106.
Crovisier, J., Brooke, T.Y., Hanner, M.S., Keller, H.U., Lamy, P.L., Altieri, B.,Bockelee-Morvan, D., Jorda, L., Leech, K. and Lellouch, E. (1997). The infrared spectrum of comet C/1995 O1 (Hale-Bopp) at 4.6 AU from the Sun. Astronomy and Astrophysics, 315, L385–L388.
Cruikshank, D.P. and Brown, R.H. (1983). The nucleus of comet P/Schwassmann-Wachmann 1. Icarus, 56, 377–380.
Cruikshank, D.P., Hartmann, W.K. and Tholen, D.J. (1985). Colour,albedo and nucleus size of Halley’s comet. Nature, 315, 122–124.
Cuzzi, J.N., Dobrovolskis, A.R. and Champney, J.M. (1993). Particlegas dynamics in the midplane of a protoplanetary nebula. Icarus, 106,102–134.
Davis, D.R. and Farinella, P. (1997). Collisional evolution of Edgeworth-Kuiper belt objects. Icarus, 125, 50–60.
Delsemme, A.H. (1973). Gas and dust in comets. Space Science Reviews,15, 89–101.
Delsemme, A.H. (1985). The nature of the cometary nucleus. Publications of the Astronomical Society of the Pacific, 97, 861–870.
Desvoivres, E., Klinger, J., Levasseur-Regourd, A.C., Lecacheux, J.,Jorda, L., Enzian, A., Colas, E., Frappa, E. and Laques, P. (1999).Comet C/1996 B2 Hyakutake: Observations, interpretation and modelling of the dynamimcs of fragments of cometary nuclei. Monthly Notices of the Royal Astronomical Society, 303, 826–834.
Divine, N. (1981). Numerical models for Halley dust environments. In B. Battrick and E. Swallow (eds), The Comet Halley Dust & Gas Environment, ESA SP-174, ESA Scientific & Technical Branch, ESTEC,Noordwijk,pp. 25–30.
Divine, N., Fechtig, H., Gombosi, T.I., Hanner, M.S., Keller, H.U.,Larson, S.M., Mendis, D.A., Newburn, R.L., Jr, Reinhard, R., Sekanina, Z.and Yeomans, D.K. (1986). The comet Halley dust and gas environment.Space Science Reviews, 43, 1–104.
Dohnanyi, J.W. (1969). Collisional models of asteroids and their debris.Journal of Geophysical Research, 74, 2531–2554.
Dominik, C. and Tielens, A. (1997). Coagulation of dust grains and the structure of dust aggregates in space. Astrophysical Journal, 480,647–673.
Donn, B. (1991). The accumulation and structure of comets. In R. Newburn and J. Rahe (eds), Comets in the Post-Halley Era, Vol. 1, Kluwer,Dordrecht, pp. 335–359.
Drummond, J.D., Fugate, R.Q., Christou, J.C. and Hege, E.K. (1998). Full adpative optics images of asteroids Ceres and Vesta: Rotational poles and triaxial ellipsoid dimensions. Icarus, 132, 80–99.
Duncan, M.J. and Levison, H.F. (1997). A scattered comet disk and the origin of Jupiter family comets. Science, 276, 1670–1672.
Duncan, M.J., Quinn, T. and Tremaine, S. (1987). The formation and extent of the Solar System comet cloud. Astronomical Journal, 94, 1330–1349.
Edgeworth, K.E. (1949). The origin and evolution of the solar system.Monthly Notices of the Royal Astronomical Society, 109, 600–609.
Efroimsky, M. and Lazarian, A. (2000). Inelastic dissipation in wobbling asteroids and comets. Monthly Notices of the Royal Astronomical Society, 311, 269–278.
Eggers, S. (1999). Cometary dynamics during the formation of the Solar System. PhD thesis, Georg-August-Universität, Göttingen, Germany.
Eggers, S., Keller, H.U., Krupa, P. and Markiewicz, W.J. (1997). Origin and dynamics of comets and star formation. Planetary and Space Science, 45, 1099–1104.
Eggers, S., Keller, H.U. and Markiewicz, W.J. (1999). Dynamics of the Kuiper belt during the formation of the Solar System. In L.M. Celnikier and T.T. Vân (eds), Planetary Systems: the Long View (IX, Recontres de Blois). Edition Frontières, pp. 79–80.
Ehrenfreud, P., D’Hendecourt, L. Dartois, E. Jourdain de Muizon, M.,Breitfellner, M. Puget, J.L. and Habing, H.J. (1997). ISO observations of interstellar ices and implications for comets. Icarus, 130, 1–15.
Emerich, C., Lamarre, J.M., Gispert, R., Coron, N., Combes, M., Encrenaz, T., Crovisier, J., Rocard, F., Bibring, J.P., Moroz, V.I., Sanko, N.F. and Nikolsky, Yu.V. (1987a). Temperature of the nucleus of comet Halley. In E.J. Rolfe and B. Battrick (eds), Symposium on the Diversity and Similarity of Comets, ESA-SP 278, ESA Publications Division, ESTEC, Noordwijk, pp. 703–706.
Emerich, C., Lamarre, J.M. Moroz, V.I., Combes, M., Sanko, N.F., Nikolsky, Y.V., Rocard, F., Gispert, R., Coron, N., Bibring, J.P., Encrenaz, T. and Crovisier, J. (1987b). Temperature and size of the nucleus of comet P/Halley deduced from IKS infrared Vega-1 measurements. Astronomy and Astrophysics, 187, 839–842.
Enzian, E., Cabot, H. and Klinger, J. (1996). A 22/1 thermodynamic model of cometary nuclei. I. Application to the activity of comet 29P/ Schwassmann-Wachmann 1.Astronomy and Astrophysics, 319, 995–1006.
Enzian, A., Cabot, H. and Klinger, J. (1998). Simulation of the water and carbon monoxide production rates of comet Hale-Bopp using a quasi 3-D nucleus model. Planetary and Space Science, 46, 851–858.
Enzian, A., Klinger, J., Schwehm, G. and Weissman, P.R. (1999). Temperature and gas Production distributions on the surface of a spherical model comet nucleus in the orbit of 46P/Wirtanen. Icarus, 138, 74–84.
Espinasse, S., Klinger, J., Ritz, C. and Schmitt, B. (1991). Modeling of the thermal behavior and of the chemical differentiation of cometary nuclei. Icarus, 92, 350–365.
Everhart, E. (1968). Change in total energy of comets passing through the Solar System. Astronomical Journal, 73, 1039–1052.
Everhart, E. (1972). The origin of short-period comets. Astrophysical Journal Letter, 10, 131–135.
Fanale, F.P. and Salvail, J.R. (1984). An idealized short period comet model: Surface insolation, H2O flux, dust flux and mantle development. Icarus, 60, 476–511.
Farinella, P., Davis, D.R. and Stern S.A. (2000). Formation and collisional evolution of the Edgeworth-Kuiper belt. In V. Mannings, A.P. Boss and S.S. Russel (eds), Protostars and Planets IV, University of Arizona Press, Tucson, p. 1255.
Fay, T.D., Jr and Wisniewski, W. (1978). The light curve of the nucleus of Comet d’Arrest. Icarus, 34, 1–9.
Fernández, J.A. (1980). On the existence of a comet belt beyond Neptune. Monthly Notices of the Royal Astronomical Society, 192, 481–491.
Fernandez, J.A. (1997). The formation of the Oort cloud and the primitive galactic environment. Icarus, 129, 106–119.
Fernández, J.A. and Ip, W.-H. (1981). Dynamical evolution of a cometary swarm in the outer planetary region. Icarus, 47, 470–479.
Fernández, J.A. and Ip, W.-H. (1983). On the time evolution of the cometary influx in the region of the terrestrial planets. Icarus, 54, 377–387.
Finson, M.L. and Probstein, R.F. (1968a). A theory of dust comets. I Model and equations. Astrophysical Journal, 154, 327–380.
Finson, M.L. and Probstein, R.F. (1968b). A theory of dust comets. II. Results for comet Arend-Roland. Astrophysical Journal, 154, 353–380.
Fulle, M. (1997). Injection of large grains into orbits around comet nuclei. Astronomy and Astrophysics, 325, 1237–1248.
Gladman, B., Kavelaars, J.J., Nicholson, P.D., Loredo, T.J. and Burns, J.A. (1998). Pencil-beam surveys for faint trans-Neptunian objects. Astronomical Journal, 116, 2042–2054.
Goldreich, P. and Ward, W.R. (1973). The formation of planetesimals. Astrophysical Journal, 183, 1051–1061.
Goldstein, R.M., Jurgens, R.F. and Sekanina, Z. (1984). A radar study of comet Iras-Araki-Alcock 1983d. Astronomical Journal, 89, 1745–1754.
Gradie, J. and Veverka, J. (1980). The composition of Trojan asteroids. Nature, 283, 840–842.
Greenberg, J.M. (1977). From dust to comets. In A.H. Delsemme (ed), Comets, Asteroids, Meteorites, University of Toledo Press, OH.
Greenberg, J.M. (1984). The Structure and evolution of interstellar grains. Scientific American, 250, 124–135.
Greenberg, J.M. (1998). Making a comet nucleus. Astronomy and Astrophysics, 330, 375–380.
Greenberg, J.M., Mizutani, H. and Yamamoto, T. (1995). A new derivation of the tensile strength of cometary nuclei: Application of comet Shoemaker-Levy 9. Astronomy and Astrophysics, 295, L35–L38.
Grothues, H.-G. and Schmidt-Kaler, T. (1996). The dust tail of comet 1P/Halley after its perihelion in 1986 and the rotation of the nucleus. Monthly Notices of the Royal Astronomical Society, 282, 547–562.
Hainaut, O., Boehnhardt, K.J. and West, R.M. (1998). Early recovery of comet 55P/Tempel-Tuttle. Astronomy and Astrophysical, 333, 746–752.
Hainaut, O., West, R.M., Marsden, B.G., Smette, A. and Meech, K. (1995). Post-perihelion observations of comet P/Halley IV, r=16,6 and 18,8 AU. Astrophysical Journal, 293, 941–947.
Hainaut, O., West R.M., Smette, A. and Marsden, B.G. (1993). Imaging of very distant comets: present experience and future expectations. In W.F. Heubner, H.U. Keller, D. Jewitt, J. Klinger and R. West (eds), Proceedings of the Workshop on the Activity of Distant Comets, Lenggries, Germany, October. Southwest Research Institute, San Antonio, Texas, pp. 54–63.
Hainaut, O., West, R.M., Smette, A. and Marsden, B.G. (1994). Imaging of very distant comets: Current and future limits. Astronomy and Astrophysical, 289, 311–324.
Hajduk, A. (1987). Meteoroids from comet P/Halley. The comet’s mass production and age. Astronomy and Astrophysical, 187, 925–927.
Hale, A., Stevens, J. and Bopp, T. (1995). Comet 1995 01. IAU Circular 6178.
Hanner, M.S., Aitken, D.K., Knacke, R. Mccorkle, S. Roche, P.F. and Tokunaga, A.T. (1985). Infrared spectrophotometry of comet Iras Araki-Alcock (1983d): A bare nucleus revealed. Icarus, 62, 97–109.
Harmon, J.K., Campbell, D.B., Hine, A.A., Shapiro, I.I. and Marsden, B.G. (1989). Radar observations of comet Iras-Araki-Alcock (1983d). Astrophysical Journal, 338, 1071–1093.
Harmon, J.K., Ostro, S.J., Benner, L.A.M., Rosema, K.D., Jurgens, R.F., Winkler, R., Yeomans, D.K., Choate, D., Cormier, R., Giorgini, J.D., Mitchell, D.L., Chodas, P.W., Rose, R., Kelley, D., Slade, M.A. and Thomas, M.L. (1997). Radar detection of the nucleus and coma of comet Hyakutake (C/1996 B2). Science, 278, 1921–1924.
Hartmann, W.K., Cruikshank, D.P. and Degewij, J. (1982). Remote comets and related bodies: VJHK colorimetry and surface materials. Icarus, 52, 377–408.
Hartmann, W.K., Tholen, D.J. and Cruikshank, D.P. (1987). The relationship of active comets, ’extinct’ comets, and dark asteroids. Icarus, 69, 33–50.
Hayashi, C., Nakazawa, K. and Nakagawa, Y. (1985). Formation of the Solar System. In D.C. Black and M.S. Matthews (eds), Protostars & Planets II, University of Arizona Press, Tucson, AZ.
Herman, G. and Weissman, P.R. (1987). Numerical simulation of cometary nuclei. III. Internal temperatures of comertary nuclei. Icarus, 69, 314–338.
Horanyi, M., Gombosi, T.I., Cravens, T.E., Körösmezey, A., Kecskeméty, K., Nagy, A.F. and Szegö, K. (1984). The friable sponge model of a cometary nucleus. Astrophysical Journal, 278, 449–455.
Horanyi, M. and Kecskeméty, K. (1983). Percolation theory and the origin of comets. In T.I. Gombosi (ed), Cometary Exploration, part I, Central Research Institute for Physics, Budapest, pp. 21–25.
Houpis, H.L.F. (1990). Models of cometary nuclei. In J. Mason and P. Moore (eds), Comet Halley, Investigations, Results, Interpretations Volume 2: Dust, Nucleus, Evolution, Ellis Horwood, London, pp. 173–188.
Huebner, W.F. (1965). Über die Gasproduktion der Kometen. Zeitschrifl für Astrophysik, 63, 22–34.
Huebner, W.F., Delamere, W.A., Reitsema, H., Keller, H.U., Wilhelm, K., Whipple, F.L. and Schmidt, H.U. (1986). Dust-gas interaction deduced from Halley Multicolour Camera observations. In B. Battrick, E.J. Rolfe and R. Reinhard (eds), 20th Eslab Symposium on the Exploration of Halley’s Comet, ESA SP-250 II, ESA, Publications Division, ESTEC, Noordwijk, pp. 363–364.
Hughes, D.W. (1987). P/Halley dust characteristics: A comparison between Orionid and Eta Aquarid meteor observations and those from the flyby spacecraft. Astronomy and Astrophysics, 187, 879–888.
Hughes, D.W. (1988). Cometary magnitude distribution and the ratio between the numbers of long-and short-period comets. Icarus, 73, 149–162.
Hut, P. and Tremaine, S. (1985). Have interstellar clouds disrupted the Oort comet cloud? Astronomical Journal, 90, 1548–1557.
Ipatov, S.I. (1999). Migration of trans-Neptutian objects to the Earth. Celestial Mechanics and Dynamical Astronomy, 73, 107–116.
Jewitt, D. (1990). The persistent coma of comet P/Schwassmann-Wachmann 1. Astrophysical Journal, 351, 277–286.
Jewitt, D. (1992). Physical properties of cometary nuclei. In A. Brahic, J.-C. Gerard and J. Surdej (eds), Proceedings of the 30th Liege International Astrophysical Colloquium on Observations and Physical Properties of Small Solar System Bodies, Universite de Liege.
Jewitt, D. (1997). Cometary rotation: An overview. Earth, Moon, Planets, 79, 35–53.
Jewitt, D. (1999). Kuiper belts objects. Annual Review of Earth and Planetary Sciences, 27, 287–312.
Jewitt, D. and Luu, J. (1993). Discovery of the candidate Kuiper belt object 1992 QB_1. Nature, 362, 730–732.
Jewitt, D. and Luu, J. (1998). Optical-infrared spectral diversity in the Kuiper belt. Astronomical Journal, 115, 1667–1670.
Jewitt, D., Luu, J. and Chen, J. (1996). The Mauna-Kea-Cerro Tololo (MKCT) Kuiper belt and Centaur survey. Astronomical Journal, 112, 1225–1331.
Jewitt, D., Luu, J. and Trujillo, C. (1998). Large Kuiper Belt Objects: The Mauna Kea 8k Ccd Survey. Astronomical Journal, 115, 2125–2135.
Jewitt, D.C. and Meech, K.J. (1987). Ccd photometry of comet P/Encke. Astronomical Journal, 93, 1542–1548.
Jewitt, D. and Meech, K.J. (1988). Optical properties of cometary nuclei and a preliminary comparison with asteroids. Astrophysical Journal, 328, 974–986.
Johnson, R.E., Cooper, J.F., Lanzerotti, L.J. and Strazzula, G. (1987). Radiation formation of a non-volatile comet crust. Astronomy and Astrophysics, 187, 889–892.
Jorda, L., Rembor, K., Lecacheux, J., Colom, P., Colas, F., Frappa, E. and Lara, L.M. (1997). The rotational prameters of Hale-Bopp (C/1995 O1) from observatioons of the dust jets at Pic du Midi Observatory. Earth, Moon, Planets, 77, 167–180.
Joss, P.C. (1973). On the origin of short-period comets. Astronomy and Astrophysics, 25, 271–273.
Kamoun, P.D., Campbell, D.B., Ostro, S.J., Pettengill, G.H. and Shapiro, I.I. (1982). Comet Encke: Radar detection of nucleus. Science, 216, 293–296.
Keller, H.U. (1976a). Thermalization of cometary hydrogen. Astronomy and Astrophysics, 38, 150–152.
Keller, H.U. (1976b). The interpretations of ultraviolet observations of comets. Space Science Reviews, 18, 641–684.
Keller, H.U. (1989). Comets -Dirty snowballs or icy dirtballs? In J. Hunt and T.D. Guyeme (eds), Proceedings of an International Workshop on Physics and Mechanics of Cometary Materials, ESA SP-302, ESA Publications Division, ESTEC, Noordwijk, pp. 39–45.
Keller, H.U. (1990). The nucleus. In W.F. Huebner (ed), Physics and Chemistry of Comets, Springer-Verlag, Berlin, New York, Tokyo, pp. 13–68.
Keller, H.U., Arpigny, C., Barbieri, C., Bonnet, R.M., Cazes, S., Coradini, M., Cosmovici, C.B., Delamere, W.A., Huebner, W.F., Hughes, D.W., Jamar, C., Malaise, D., Reitsema, H.J., Schmidt, H.U., Schmidt, W.K.H., Seige, P., Whipple, F.L. and Wilhelm, K. (1986). First Halley Multicolour Camera imaging results from Giotto. Nature, 321, 320–326.
Keller, H.U., Blum, J., Donn, B., El Goresy, A., Fechtig, H.,Feuerbacher, B.P., Grün, E., Ip, W.-H., Kochan, H., Mann, I.,Markiewicz, W.J., Metzler, K., Morfill, G.E., Ratke, L. Rott, M.,Schwehm, G. and Weidenschilling, S.J. (1992). Columbus-Proto-Planetesimal Dust Aggregation Experiment. In B. Kaldeich (ed),Proceedings of the VIIIth European Symposium on Materials and Fluid Sciences in Microgravity, ESA SP-333, ESA Publication Division,ESTEC, Noordwijk, pp. 839–844.
Keller, H.U., Curdt, W., Kramm, J.R. and Thomas, N. (1995). Images obtained by the Halley Multicolour Camera (Hmc) on board the Giotto spacecraft. In R. Reinhard, N. Longdon and B. Battrick (eds), Images of the Nucleus of Comet Halley, Volume 1, ESA Publication Division,Estec, Noordwijk, pp. 1–252.
Keller, H.U., Delamere, W.A., Huebner, W.F., Reitsema, H.J., Schmidt,H.U., Whipple, F.L., Wilhelm, K., Curdt, W., Kramm, J.R., Thomas, N.,Arpigny, C., Barbieri, C., Bonnet, R.M., Cazes, S., Coradini, M.,Cosmovici, C.B., Hughes, D.W., Jamar, C., Malaise, D., Schmidt, K.,Schmidt, W.K.H. and Seige, P. (1987). Comet P/Halley’s nucleus and its activity. Astronomy and Astrophysics, 187, 807–823.
Keller, H.U., Knollenberg, J. and Markiewicz, W.J. (1994). Collimation of cometary dust jets and filaments. Planetary and Space Science 42,367–382.
Keller, H.U., Kramm, R. and Thomas, N. (1988). Surface features of the nucleus of comet Halley. Nature, 331, 227–231.
Keller, H.U., Marconi, M.L. and Thomas, N. (1990). Hydrodynamic implications of particle fragmentation near cometary nuclei. Astronomy and Astrophysics, 227, L1–L4.
Keller, H.U. and Rembor, K. (1998). Modeling cometary dust production rates post perihelion. Bulletin of the American Astronomical Society, 30,1090–1090.
Kerr, R.A. (1986). Halley’s confounding fireworks. Science, 234, 1196–1198.
Kitamura, Y. (1986). Axisymmetric dusty gas jet in the inner coma of a comet. Icarus, 66, 241–257.
Kitamura, Y. (1987). Axisymmetric dusty gas jet in the inner coma of a comet. II. The case of isolated jets. Icarus, 72, 555–567.
Klinger, J. (1980). Influence of a phase transition of ice on the heat and mass balance of comets. Science, 209, 271–272.
Klinger, J. (1981). Some consequences of a phase transition of water ice on the heat balance of a comet. Icarus, 47, 320–324.
Klinger, J. (1983). Classification of cometary orbits based on the concept of orbital mean temperature. Icarus, 55, 169–176.
Klinger, J. (1993). Are outbursts of comets at large heliocentric distances due to internal or due to external causes? In W.F. Huebner, H.U. Keller,D. Jewitt, J. Klinger and R. West (eds), Proceedings of the Workshop on the Activity of Distant Comets, Southwest Research Institute, San Antonio, TX, pp. 110–113.
Klinger, J., Levasseur-Regourd, A.-C., Bouziani, N. and Enzian, A.(1996). Towards a model of cometary nuclei for engineering studies for future space missions to comets. Planetary and Space Science 44,637–654.
Knollenberg, J. (1994). Modellrechnungen zur Staubverteilung in der inneren Koma von Kometen unter spezieller Berücksichtigung der Hmc-Daten der GIOTTO-Mission. PhD thesis. Georg-August-Universität, Göttingen, Germany.
Knollenberg, J., Kührt, E. and Keller, H.U. (1996). Interpretation of HMC images by a combined thermal and gasdynamic model. Earth, Moon,Planets, 72, 103–112.
Kouchi, A., Greenberg, J.M., Yamamoto, T. and Mukai, T. (1992).Extremely low thermal conductivity of amourphous ice: Relevance to comet evolution. Astronomical Journal, 388, L73–L76.
Kouchi, A., Yamamoto, T., Kozasa, T., Kuroda, T. and Greenberg, J.M.(1994). Conditions for condensation and preservation of amorphous ice and crystallinity of astrophysical ice. Astronomy and Astrophysics, 290,1009–1018.
Kührt, E. (1984). Temperature profiles and thermal stresses in cometary nuclei. Icarus, 60, 512–521.
Kührt, E. and Keller, H.U. (1994). The formation of cometary surface crusts. Icarus, 109, 121–132.
Kührt, E. and Keller, H.U. (1996). On the importance of dust in cometary nuclei. Earth, Moon, Planets, 72, 79–89.
Kührt, E., Knollenberg, J. and Keller, H.U. (1997). Physical risks of landing on a cometary nucleus. Planetary and Space Science, 45, 665–680.
Kuiper, G.P. (1951). On the origin of the Solar System. In J.A. Hynek (ed), Astrophysics, McGraw-Hill, New York.
Lamy, P.L., A’Hearn, M.F. and Weaver, H.A. (1999). Hubble Space Telescope observations of the nucleus of comet 45P/Honda-Mrkos-Pajdusakova and its inner coma. Icarus, 140, 424–438.
Lamy, P.L. and Toth, I. (1995). Direct detection of a cometary nucleus with the Hubble Space Telescope. Astronomy and Astrophysics, 293, L43–L45.
Lamy, P.L., Toth, I., Jorda, L., Weaver, H.A. and A’Hearn, M.F. (1998a). The nucleus and inner coma of comet 46P/Wirtanen. Astronomy and Astrophysics, 335, L25–L29.
Lamy, P.L., Toth, I. and Weaver, H.A. (1998b). Space telescope of the nucleus and inner coma of comet 19P/1904 Y2 (Borelly). Astronomy and Astrophysics, 337, 945–954.
Larson, S., Sekanina, Z., Levy, D., Tapia, S. and Senay, M. (1987). Comet P/Halley near-nucleus phenomena in 1986. Astronomy and Astrophysics, 187, 639–644.
Lebofsky, L.A. and Spencer, J.R. (1989). Radiometric and thermal modeling of asteroids. In R.P. Binzel, T. Gehrels and M.S. Matthews (eds), Asteroids II, University of Arizona Press, Tucson, AZ, pp. 128–147.
Lecacheux, A., Jorda, L. and Colas, F. (1997). Comet C/1995 O1 (Hale-Bopp). IAU Circular 6560.
Levin, B.J. (1943). Gas evolution from the nucleus of a comet as related to the variations in its absolute brightness. Compt. Rend. Acad. Sci., USSR (NS), 38, 72–74.
Levison, H.F. and Duncan, M.J. (1994). The long-term dynamical behavior of short-period comets. Icarus, 108, 18–36.
Licandro, J., Bellot, R., Luis, R., Boehnhardt, H., Casas, R., Goetz, B., Gomez, A., Jorda, L., Kidger, M.R., Osip, D., Sabalisck, N., Santos, P., Serr-Ricart, M., Tozzi, G.P. and West, R. (1998). The rotation period of C/1995 O1 (Hale-Bopp). Astrophysical Journal, 501, L221–L225.
Lisse, C.M., Fernández, Y.R., Kundu, A., A’Hearn, M.F., Dayal, A., Deutsch, L.K., Fazio, G.G., Hora, J.L. and Hoffmann, W.F. (1999). The nucleus of comet Hyakutake (C/1996 B2). Icarus, 140, 189–204.
Love, S.G., Joswiak, D.J. and Rownlee, BD.E. (1994). Densities of stratospheric micrometeorites. Icarus, 111, 227–236.
Luu, J.X. (1993a). Cometary activity in distant comets: Chiron. Publications of the Astronomical Society of the Pacific, 105, 946–950.
Luu, J.X. (1993b). Spectral diversity among the nuclei of comets. Icarus, 104, 138–148.
Luu, J. and Jewitt, D.C. (1990). The nucleus of comet P/Encke. Icarus, 86, 69–81.
Luu, J.X. and Jewitt, D.C. (1992). CCD photometry of comet P/Schwassmann-Wachmann 2. Astronomical Journal, 104, 2243–2249.
Luu, J. and Jewitt, D.C. (1993). Comet Shoemaker-Levy (1993e). IAU Circular 5730.
Luu, J.X. and Jewitt, D.C. (1998). Deep imaging of the Kuiper belt with the Keck 10-meter telescope. Astrophysical Journal, 502, L91–L94.
Luu, J.X., Jewitt, D.C. and Trujillo, C. (2000). Water ice in 2060 Chiron and its implications for Centaurs and Kuiper belt objects. Astrophysical Journal, 531, L151–L154.
Lyttleton, R.A. (1948). On the origin of comets. Monthly Notices of the Royal Astronomical Society, 108, 465–475.
Lyttleton, R.A. (1953). The Comets and Their Origin, Cambridge University Press.
Marchis, F., Boehnhardt, H., Hainaut, O.R. and LeMignant, D. (1999). Adaptive optics observations of the innermost coma of C/1995 O1. Are there a ‘Hale’ and a ‘Bopp’ in comet Hale-Bopp? Astronomy and Astrophysics, 349, 985–995.
Marco, O., Encrenaz, T. and Gendron, E. (1998). First images of a comet with adaptive optics. Planetary and Space Science, 46, 547–554.
Marsden, B.G. (1989a). The sungrazing comet group. II. Astronomical Journal, 98, 2306–2321.
Marsden, B.G. (1989b). Catalogue of Cometary Orbits, 6th edn, IAU.
McCrea, W.H. (1975). Solar System as space-probe. Observatory, 95, 239–255.
McKinnon, W.B. and Schenk, P.M. (1995). Estimates of comet fragment masses from impact crater chains on Callisto and Ganymede. Geophysical Research Letters, 22, 1829–1832.
McNaught, R.H. (1995). Comet C/1995 O1 (Hale-Bopp). IAU Circular 6198.
Meech, K.J., Belton, M.J.S., Mueller, B.E.A., Dicksion, M.W. and Li, H.R. (1993). Nucleus properties of P/Schwassmann-Wachmann 1. Astronomical Journal, 106, 1222–1236.
Meech, K.J. and Jewitt, D. (1987). Comet Bowell at record heliocentric distance. Nature, 328, 506–509.
Melosh, H.J. and Schenk, P. (1993). Split comets and the origin of crater chains on Ganymede and Callisto. Nature, 365, 731–735.
Melosh, H.J. and Whitaker, E.A. (1994). Split comets and crater chains on the Moon. Nature, 369, 713–714.
Mendis, D.A. and Brin, G.D. (1977). The monochromatic brightness variations of comets -II. The core-mantle model. Moon and Planets, 17, 359–372.
Merényi, E., Földy, L., Szegö, K., Tóth, I. and Kondor, A. (1990). The landscape of comet Halley. Icarus, 86, 9–20.
Millis, R.L., A’Hearn, M.F. and Campins, H. (1988). An investigation of the nucleus and coma of comet P/Arend-Rigaux. Astrophysical Journal, 324, 1194–1209.
Mitchell, J.K., Carrier, W.D., Costes, N.C., Houston, W.N., Scott, R.F. and Hovland, H.J. (1973). Soil mechanics. NASA Conference Publication, NASA SP-330.
Möhlmann, D., Börner, H., Danz, M., Elter, G., Mangoldt, T., Rubbert, B. and Weidlich, U. (1986). Physical properties of P/Halley -Derived from Vega Images. In B. Battrick, E.J. Rolfe and R. Reinhard (eds), 20th ESLAB Symposium on the Exploration of Halley’s Comet, ESA-SP 250 II, ESA, Publications Division, ESTEC, Noordwijk, pp. 339–340.
Möhlmann, D., Danz, M. and Börner, H. (1987). Properties of the nucleus of P/Halley. In E.J. Rolfe and B. Battrick (eds.), Symposium on the Diversity and Similarity of Comets, ESA-SP 278, ESA Publications Division, ESTEC, Noordwijk, pp. 481–492.
Omont, A., Forveille, T., Moseley, S.H., Glaccum, W.J., Harvey, P.M., Likkel, L., Loewenstein, R.F. and Lisse, C.M. (1990). Observations of 40–70 micron bands of ice in IRAS 09371 + 1212 and other stars. Astrophysical Journal, 355, L27–L30.
Oort, J.H. (1950). The structure of the cloud of comets surrounding the Solar System and a hypothesis concerning its origin. Bulletin of the Astronomical Institutes of the Netherlands, IX, 91–110.
Öpik, E.J. (1932). Note on stellar perturbations of nearly parabolic orbits. Proceedings of the American Academy of Arts and Sciences, 67, 169–183.
Orosei, R., Capaccioni, F., Capria, M.T., Coradini, A., De Sanctis, M.C., Federico, C., Salomone, M. and Huot, J.-P. (1999). Numerically improved thermochemical evolution models of comet nuclei. Planetary and Space Science, 47, 839–853.
Peale, S.J. (1989). On the density of Halley’s comet. Icarus, 82, 36–50.
Peale, S.J. and Lissauer, J.J. (1989). Rotation of Halley’s comet. Icarus, 79, 396–430.
Prialnik, D. and Bar-Nun, A. (1987). On the evolution and activity of cometary nuclei. Astrophysical Journal, 313, 893–905.
Prialnik, D. and Bar-Nun, A. (1988). The formation of a permanent dust mantle and its effect on cometary activity. Icarus, 74, 272–283.
Quinn, T., Tremaine, S. and Duncan, M. (1990). Planetary perturbations and the origin of short-period comets. Astrophysical Journal, 355, 667–679.
Reinhard, R. (1986). The Inter-Agency Consultative Group (IACG) and its associated working groups. In R. Reinhard and B. Battrick (eds), Space Missions to Halley’s Comet, ESA Publications Division, ESTEC, Noordwijk, pp. 199–216.
Rembor, K.-M. (1998). Ableitung physikalischer Parameter von Kometenkernen aus Beobachtungen der Staubkoma. PhD thesis, Georg-August-Universität, Göttingen, Germany.
Richter, K. and Keller, H.U. (1995). On the stability of dust particle orbits around cometary nuclei. Icarus, 114, 355–371.
Rickman, H. (1989). The nucleus of comet Halley: Surface structure, mean density, gas and dust production. Advances in Space Research, 9, 59–71.
Rickman, H., Fernandez, J.A. and Gustafson, B.A.S. (1990). Formation of stable dust mantles on short-period comet nuclei. Astronomy and Astrophysics, 237, 524–535.
Rickman, H. and Jorda, L. (1998). Comet 46P/Wirtanen, the target of the Rosetta mission. Advances in Space Research, 21, 1491–1504.
Rickman, H., Kamél, L., Festou, M.C. and Froeschlé, C.l. (1987). Estimates of masses, volumes and densities of short-period comet nuclei. In E.J. Rolfe and B. Battrick (eds), Symposium on the Diversity and Similarity of Comets, ESA-SP 278, ESA Publications Division, ESTEC, Noordwijk, pp. 471–481.
Roemer, E. (1966a). The dimensions of cometary nuclei. Nature et origine des comètes, 23.
Roemer, E. (1966b). Cometary nuclei. Introductory report. Nature et origine des comètes, 15–22.
Russell, H.N. (1916). On the albedo of the planets and their satellites. Astrophysical Journal, 43, 173–196.
Safronov, V.S. (1969). Evolution of the protoplanetary cloud and formation of the Earth and planets. NASA Technical Memorandum, TT F-677.
Sagdeev, R.Z., Blamont, J., Galeev, A.A., Moroz, V.I., Shapiro, V.D., Shevchenko, V.I. and Szegö, K. (1986). Vega spacecraft encounters with comet Halley. Nature, 321, 259–262.
Sagdeev, R.Z., Elyasberg, P.E. and Moroz, V.I. (1988). Is the nucleus of comet Halley a low density body? Nature, 331, 240–242.
Sagdeev, R.Z., Szegö, K., Smith, B.A., Larson, S., Merenyi, E., Kondor, A., Toth, I. (1989). The Rotation of P/Halley. The Astronomical Journal, 97, 546–551.
Saint-Pé, O., Combes, M. and Rigaut, F. (1993). Ceres surface properties by high-resolution imaging from Earth. Icarus, 105, 271–281.
Samarasinha, N.H. (2000). Coma morphology due to an extended active region and implications for the spin state of comet Hale-Bopp. The Astrophysical Journal, 529, L107–L110.
Samarasinha, N.H. and Belton, M.J.S. (1995). Long-term evolution of rotational states and non-gravitational effects for Halley-like cometary nuclei. Icarus, 116, 340–358.
Saunders, R.S., Fanale, F.P., Parker, T.J., Stephens, I.B. and Sutton, S. (1986). Properties of filamentary sublimation residues from dispersions of clay in ice. Icarus, 66, 94–104.
Schenk, P.M., Asphaug, E., Mckinnon, W.B., Melosh, H.J. and Weissman, PR. (1996). Cometary nuclei and tital discruption: The geologic record of crater chains on Callisto and Ganymede. Icarus, 121, 249–274.
Schiaparelli, G. (1866). Notice of paper, ’Sur la relation qui existe entre les Comètes et les Etoiles filantes’. Monthly Notices of the Royal Astronomical Society, 27, 246
Schleicher, D.G., Millis, R.L., Thompson, D.T., Birch, P.V., Martin, R., Tholen, D.J., Piscitelli, J.R., Lark, N.L. and Hammel, H.B. (1990). Periodic variations in the activity of comet P/Halley during the 1985/1986 apparition. Astronomical Journal, 100, 896–912.
Schulz, R. and Schlosser, W. (1989). CN-shell structures and dynamics of the nucleus of comet P/Halley. Astronomy and Astrophysics, 214, 375–385.
Schwarz, G., Craubner, H., Delamere, W.A., Goebel, M., Gonano, M., Huebner, W.F., Keller, H.U., Kramm, R., Mikusch, E., Reitsema, H.J., Whipple, F.L. and Wilhelm, K. (1986). Detailed analysis of a surface feature on comet Halley. In B. Battrick, E.J. Rolfe and R. Reinhard (eds), 20th ESLAB Symposium on the Exploration of Halley’s Comet, ESA-SP 250II, ESA, Publications Division, ESTEC, Noordwijk, pp. 371–374.
Scotti, J.V. and Melosh, H.J. (1993). Estimate of the size of comet Shoemaker-Levy 9 from a tidal breakup model. Nature, 365, 733–735.
Sekanina, Z. (1972). A model for the nucleus of Encke’s comet. In G.A. Chebatorev, E.I. Kazimirchak-Polonskaya and B.G. Marsden (eds), The Motion, Evolution of Orbits and Origin of Comets, Reidel, Dordrecht, p. 301.
Sekanina, Z. (1977). Relative motions of fragments of the split comets. I. A new approach. Icarus, 30, 574–594.
Sekanina, Z. (1978). Relative motions of fragments of the split comets. II. Separation velocities and differential decelerations for extensively observed comets. Icarus, 33, 173–185.
Sekanina, Z. (1982). The problem of split comets in review. In L.L. Wilkening (ed), Comets, University of Arizona Press, Tucson, AZ.
Sekanina, Z. (1997). The problem of split comets revisited. Astronomy and Astrophysics, 318, L5–L8.
Shoemaker, C.S., Shoemaker, E.M. and Levy, D.H. (1993). Comet Shoemaker-Levy (1993e). lau Circular 5724.
Shoshany, Y., Podolak, M., Prialnik, D. and Berkowitz, B. (1999). A Monte Carlo model for the flow of dust in a porous comet nucleus. Icarus, 137, 348–354.
Shul’Man, L.M. (1972). The evolution of cometary nuclei. In G.A. Chebatorev, E.I. Kazimirchak-Polonskaya and B.G. Marsden (eds), The Motion, Evolution of Orbits and Origin of Comets, Reidel, Dordrecht, pp. 271–276.
Skorov, Yu.V. and Rickman, H. (1995). A kinetic model of gas flow in a porous cometary mantle. Planetary and Space Science, 43, 1587–1594.
Skorov, Yu.V., Kömle, N.I., Mariewicz, W.J. and Keller, H.U. (1999). Mass and energy balance in the near-surface layers of a cometary nucleus. Icarus, 140, 173–188.
Smoluchowski, R. (1981). Amorphous ice and the behaviour of cometary nuclei. Astrophysical Journal, 244, L31.
Solem, J.C. (1994). Density and site of comet Shoemaker-Levy 9 deduced from a tidal breakup model. Nature, 370, 349–351.
Stern, S.A. (1995). Collisional time scales in the Kuiper disk and their implications. Astronomical Journal, 110, 856.
Stern, S.A. (1996). The historical development and status of Kuiper disk studies. In T.W. Rettig and J.M. Hahn (eds), Completing the Inventory of the Solar System, Astronomical Society of the Pacific Conference Proceedings, Vol. 107, pp. 209–232.
Stern, S.A. and Colwell, J.E. (1997). Accretion in the Edgeworth-Kuiper belt: Forming 100–1000 km radius bodies at 30 Au and beyond. Astronomical Journal, 114, 841–849.
Stooke, P.J. and Abergel, A. (1991). Morphology of the nucleus of comet P/Halley. Astronomy Astrophysics, 248, 656–668.
Storrs, A.D., Fanale, F.P., Saunders, R.S. and Stephens, J.B. (1988). The formation of filamentary sublimate residues (FSR) from mineral grains. Icarus, 76, 493–512.
Sykes, M.V., Lebofsky, L.A., Hunten, D.M. and Low, F.J. (1986). The discovery of dust trails in the orbits of periodic comets. Science, 232, 1115–1117.
Szegö, K., Sagdeev, R.Z., Whipple, F.L., Abergel, A., Bertaux, J.-L., Merényi, E., Szalai, S. and Varhalmi, L. (1995). Images obtained by the Television System (TVS) on board the Vega spacecraft. In R. Reinhard and B. Battrick (eds), Images of the Nucleus of Comet Halley, Volume 2, ESA Publications Division, ESTEC, Noordwijk, pp. 1–255.
Tambovtseva, L.V. and Shestakova, L.I. (1999). Cometary splitting due to the thermal stresses. Planetary and Space Science, 47, 319–326.
Tholen, D.J., Hartmann, W.K. and Cruikshank, D.P. (1988). (2060) Chiron. Iau Circular 4454.
Thomas, N., Eggers, S., Ip, W.-H., Lichtenberg, G., Fitzsimmons, A., Jorda, L., Keller, H.U., Williams, Ip., Hahn, G. and Rauer, H. (2000). Observations of the trans-Neptunian objects, 1993 SC and 1996 TL_66, with the Infrared Space Observatory. Astronomical Journal, 534, 446–455.
Thomas, N. and Keller, H.U. (1987). Fine dust structures in the emission of comet P/Halley observed by the Halley Multicolour Camera on board Giotto. Astronomy and Astrophysics, 187, 843–846.
Thomas, N. and Keller, H.U. (1989). The colour of comet P/Halley’s nucleus and dust. Astronomy and Astrophysics, 213, 487–494.
Thomas, N. and Keller, H.U. (1990). Interpretation of the inner coma observations of comet P/Halley by the Halley Multicolour Camera. Annales Geophysicae, 8, 147–166.
Tokunaga, A.T. and Hanner, M.S. (1985). Does comet P/Arend-Rigaux have a large dark nucleus? Astrophysical Journal, 296, L13–L16.
Tokunaga, A.T., Hanner, M.S., Golisch, W.F., Griep, D.M., Kamisky, C.D. and Chen, H. (1992). Infrared monitoring of Comet P/Tempel 2. Astronomical Journal, 104, 1611–1617.
Veeder, G.J., Hanner, M.S. and Tholen, D.J. (1987). The nucleus of comet P/Arend-Rigaux. Astronomical Journal, 94, 169–173.
Vsekhsvyatskij, S.K. (1967). Physical characteristics of comets observed during 1961–1965. Soviet Astronomy, 10, 1034–1041.
Wallis, M.K. (1980). Radiogenic heating of primordial cometary interiors. Nature, 284, 431–433.
Weaver, H.A., A’Hearn, M.F., Arpigny, C., Boice, D.C., Feldmann, P.D., Larson, S.M., Lamy, P., Levy, D.H., Marsden, B.G., Meech, K.J., Noll, K.S., Scotti, J.V. and Sekanina, Z. (1995). The Hubble Space Telescope (HST) observing campaign on comet Shoemaker-Levy 9. Science, 267, 1282–1288.
Weidenschilling, S.J. (1980). Dust to planetesimals: Settling and coagulation in the solar nebula. Icarus, 44, 172–189.
Weidenschilling, S.J. (1995). Can graviational instability form planetesimals? Icarus, 116, 433–435.
Weidenschilling, S.J. (1997). The origin of comets in the solar nebula: A unified model. Icarus, 127, 290–306.
Weissman, P.R. (1980). Stellar perturbations of the cometary cloud. Nature, 288, 242–243.
Weissman, P.R. (1986). Are cometary nuclei primordial rubble piles? Nature, 320, 242–244.
Weissman, P.R., A’Hearn, M.F., McFadden, L.A. and Rickman, H. (1989). Evolution of comets into asteroids. In R.P. Binzel, T. Gehrels and M.S. Matthews (eds), Asteroids II, University of Arizona Press, Tucson, AZ, pp. 880–920.
West, R.M. (1990). Post-perihelion observations of comet P/Halley II. r= 10.1 AU. Astronomy and Astrophysics, 228, 531–538.
West, R.M., Hainaut, O. and Smette, A. (1991). Post-perihelion observations of P/Halley. III. An outburst at r=14.3AU. Astronomy and Astrophysics, 246, L77–L80.
West, R.M. and Jorgensen, H.E. (1989). Post-perihelion observations of comet P/Halley at r=8.5 AU. Astronomy and Astrophysics 218, 307–316.
Wetherill, G.W. and Revelle, D.O. (1982). Relationships between comets, large meteors, and meteorites. In L.L. Wilkening (ed), Comets, University of Arizona Press, Tucson, AZ, pp. 297–319.
Whipple, F.L. (1950a). A Comet model I. The acceleration of comet Encke. Astrophysical Journal, 111, 375–394.
Whipple, F.L. (1950b). A comet model II. Physical relations for comets and meteors. Astrophysical Journal, 111, 464–474.
Whipple, F.L. (1967). On maintaining the meteoritic complex. The Zodiacal Light and the Interplanetary Medium, NASA SP-150, pp. 409–426.
Whipple, F.L. (1983). Comets -Nature, evolution and decay. Highlights of Astronomy, 6, 323–330.
Whipple, F.L. and Sekanina, Z. (1979). Comet Encke: Precession of the spin axis, non-gravitational motion and sublimation. Astronomical Journal, 84, 1894–1909.
Williams, G. (2000). Catalogue of Cometary Orbits. 13th Edn, IAU.
Wisniewski, W.Z. (1990). Rotation of comet P/Tempel 2 from CCD and photoelectric photometry. Icarus, 86, 52–57.
Wurm, K. (1934). Beitrag zur Deutung der Vorgänge in Kometen. I. Zeitschrift für Astrophysik, 8, 281–291.
Wurm, K. (1935). Beitrag zur Deutung der Vorgänge in Kometen. II.Zeitschrift für Astrophysik, 9, 62–78.
Wurm, K. (1943). Die Natur der Kometen. Mitt. Hamburger Sternwarte, 8,57–92.
Yamamoto, T. and Kozasa, T. (1988). The cometary nucleus as an aggregate of planetesimals. Icarus, 75, 540–551.
Yeomans, D.K. and Kiang, T. (1981). The long-term motion of comet Halley. Monthly Notices of the Royal Astronomical Society, 197, 633–646.
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Keller, H.U., Jorda, L. (2001). The morphology of cometary nuclei. In: Bleeker, J.A.M., Geiss, J., Huber, M.C.E. (eds) The Century of Space Science. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0320-9_52
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