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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2012

Evaluating the carbon depletion found by the Stardust mission in Comet 81P/Wild 2

Résumé

The low abundance of refractory carbonaceous material in samples collected by Stardust in comet 81P/Wild 2 coma was completely unexpected. If these results are universal to other comets, this necessitates a reformulation of current models of solar system formation. A polarimetric imaging analysis demonstrates that dust is not uniformly distributed within cometary coma, and that the circumnucleus halo region where the dust samples were collected must contain a low population of carbonaceous particles. Such regions are seen in other comets, suggesting that comet 81P/Wild 2 is not unusual and that the anomalous lack of carbon is not necessarily representative of the entire coma.
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hal-00724148 , version 1 (17-04-2016)

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Evgenij Zubko, Karri Muinonen, Yurij Shkuratov, Edith Hadamcik, Anny Chantal Levasseur-Regourd, et al.. Evaluating the carbon depletion found by the Stardust mission in Comet 81P/Wild 2. Astronomy and Astrophysics - A&A, 2012, 544, pp.L8. ⟨10.1051/0004-6361/201218981⟩. ⟨hal-00724148⟩
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