Results 171 to 180 of about 1,994 (199)

The dust properties of a short period comet: comet P/Borrelly

, 1998
Li, A., Greenberg, J.M.
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Invisible comets on evolutionary track of short-period comets

Celestial Mechanics and Dynamical Astronomy, 1992
We systematically surveyed the orbits of short-period (SP) comets that show a large change of perihelion distance (q) between 1-2 AU (visible comets) and 4-5 AU (invisible comets) during 4400 years. The data are taken from Cosmo-DICE (Nakamura and Yoshikawa 1991a), which is a long-term orbital evolution project for SP comets.
Tsuko Nakamura, Makoto Yoshikawa
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The origin of short-period comets

Icarus, 1990
Abstract Recent work has shown that if short-period comets predominantly occur as a result of planetary “captures” of long-period comets, the relevant source flux of nearly parabolic orbits must involve comets with perihelia in the range 5–30 AU, significantly beyond the region in which the flux is observationally constrained. The numbers and orbital
Mark E. Bailey, Chris R. Stagg
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Origin Of Short-Period Comets

Celestial Mechanics and Dynamical Astronomy, 1992
Reasons for interest in the origin of short-period comets and the difficulties of computing their long-term dynamical evolution are reviewed. The relative advantages of a source region in an extended ‘inner core’ of the Oort cloud or a compact ‘comet belt‘ just beyond the planetary system are finely balanced, and it is premature to consider the problem
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Short-period Jupiter family comets after Stardust

Planetary and Space Science, 2009
The NASA Stardust mission has provided for laboratory study an extensive data set of cometary dust of known provenance (from comet 81P/Wild 2) yielding detailed insights into the composition of the comet. Combined with the results of data from other missions to short-period Jupiter family comets (JFC), this has greatly deepened the understanding of ...
M.J. Burchell, A.T. Kearsley
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Chondrulelike Objects in Short-Period Comet 81P/Wild 2

Science, 2008
The Stardust spacecraft returned cometary samples that contain crystalline material, but the origin of the material is not yet well understood. We found four crystalline particles from comet 81P/Wild 2 that were apparently formed by flash-melting at a high temperature and are texturally, mineralogically, and compositionally similar to chondrules ...
Tomoki, Nakamura, Takaaki, Noguchi, Akira, Tsuchiyama, Takayuki, Ushikubo, Noriko T, Kita, John W, Valley, Michael E, Zolensky, Yuki, Kakazu, Kanako, Sakamoto, Etsuko, Mashio, Kentaro, Uesugi, Tsukasa, Nakano   +11 more
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Observational results for five short-period and five long-period comets

Planetary and Space Science, 2020
Abstract In this work we studied the activity of a group of long and short period comets at different heliocentric distances in order to explore and compare their dust production and characteristics. The targets observed were the comets 22P/Kopff, 29P/Schwassmann-Wachmann 1, 218P/LINEAR, 221P/LINEAR, 318P/McNaught-Hartley, C/2010 FB87 (WISE-Garradd),
Garcia, Romina Soledad, Gil-hutton, Ricardo Alfredo, García Migani, Esteban Andrés   +2 more
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Unnumbered Short-Period Comets

2017
The following lists comets having periods of less than 25 years that have either been discovered in recent years or for which a short-period orbit has recently been calculated. Most of these objects will probably be recovered at future apparitions and be given permanent numbers.
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Meteoroid impact into short-period comet nuclei

Nature, 1981
The effects of extended meteoroid bombardment on short-period comet nuclei are examined and their possible implications for asteroid and meteorite studies are discussed. It is suggested that after devolatilization of the nucleus, the accumulated material might combine with primary cometary solids to produce environments conducive to the formation of ...
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Hypothetical evolutions of short-period comets

Symposium - International Astronomical Union, 1996
The hypothetical model of capture I consider is as follows: a comet with an initial conic orbit, meets close to one of its vertices an outer planet and generates one or several little comets (crossing of the Roche limit) with an elliptic orbit. This initial vertex always remains one of the vertices of the captured orbit by the Solar System.
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