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The role of sticky interstellar organic material in the formation of asteroids
| Title: | The role of sticky interstellar organic material in the formation of asteroids |
| Authors: | Kudo, T. Browse this author | | Kouchi, A. Browse this author →KAKEN DB | | Arakawa, M. Browse this author | | Nakano, H. Browse this author |
| Issue Date: | Dec-2002 |
| Publisher: | The University of Arizona |
| Journal Title: | Meteoritics & Planetary Science |
| Volume: | 37 |
| Issue: | 12 |
| Start Page: | 1975 |
| End Page: | 1983 |
| Abstract: | Collision experiments and measurements of viscoelastic properties were performed involving an interstellar organic material analogue to investigate the growth of organic grains in the protosolar nebula. The organic material was found to be stickiest at a radius of between 2.3 and 3.0 AU, with a maximum sticking velocity of 5 m s-1 for millimeter-size organic grains. This stickiness is considered to have resulted in the very rapid coagulation of organic grain aggregates and subsequent formation of planetesimals in the early stage of the turbulent accretion disk. The planetesimals formed in this region appear to be represent achondrite parent bodies. In contrast, the formation of planetesimals at <2.1 and >3.0 AU begins with the establishment of a passive disk because silicate and ice grains are not as sticky as organic grains. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/17114 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 香内 晃
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