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Momentum transfer to fluffy dust aggregates from stellar winds
| Title: | Momentum transfer to fluffy dust aggregates from stellar winds |
| Authors: | Minato, T. Browse this author | | Kohler, M. Browse this author | | Kimura, H. Browse this author | | Mann, I. Browse this author | | Yamamoto, T.5 Browse this author →KAKEN DB |
| Authors(alt): | 山本, 哲生5 |
| Keywords: | stars : wind | | interplanetary medium | | outflows | | Kuiper Belt | | solar wind | | circumstellar matter | | meteors | | meteroids |
| Issue Date: | Jun-2006 |
| Publisher: | EDP SCIENCES |
| Journal Title: | Astronomy & Astrophysics |
| Volume: | 452 |
| Issue: | 2 |
| Start Page: | 701 |
| End Page: | 707 |
| Publisher DOI: | 10.1051/0004-6361:20054774 |
| Abstract: | Aims. Dust-plasma interaction may play a dominant role in the dynamics of dust particles around young main-sequence stars. Circumstellar dust is expected to be an aggregate consisting of small grains. The momentum transfer cross section (MTCS) for an aggregate is a key quantity for determining the lifetimes of circumstellar dust disks. Methods. We formulate the MTCS of fluffy dust aggregates and propose an algorithm for computing the MTCS. We compare the magnitude of the plasma and photon Poynting-Roberson effects (PR effects). Results. We find an empirical formula that approximates numerical results well for the MTCSs. A comparison of the magnitudes of the PR effects shows that the lifetime of debris dust around young main-sequence stars is shorter by orders of magnitude than the lifetime estimated by considering the photon PR effect alone. Brief discussion is given on the plasma PR effect for dust debris disks around young main-sequence stars. |
| Rights: | The original publication is available at www.edpsciences.org |
| Type: | article |
| URI: | http://hdl.handle.net/2115/11395 |
| 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: 山本 哲生
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