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A POSSIBLE MASSIVE ASTEROID BELT AROUND z LEPORIS
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chen, Christine - Jura, Michael A. |
| Copyright Year | 2001 |
| Abstract | We have used the Keck I telescope to image at 11.7 and 17.9 mm the dust emission around z Leporis, a mainsequence A-type star at 21.5 pc from the Sun with an infrared excess. The excess is at most marginally resolved at 17.9mm. The dust distance from the star is probably ≤6 AU, although some dust may extend to 9 AU. The mass of observed dust is ∼1022 g. Since the lifetime of dust particles is about 10 4 yr because of the PoyntingRobertson effect, we robustly estimate at least g must reside in parent bodies, which may be asteroids 26 4 # 10 if the system is in a steady state and has an age of ∼300 Myr. This mass is approximately 200 times that contained within the main asteroid belt in our solar system. Subject headings: circumstellar matter — planetary systems — stars: individual (HR 1998) |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://w.astro.berkeley.edu/~kalas/disksite/library/chen01a.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Command & Conquer:Yuri's Revenge Contain (action) GUCY2C protein, human Gold Medical Subject Headings Offset binary Planetary scanner Reside Stars, Celestial Steady state TRAPPIST |
| Content Type | Text |
| Resource Type | Article |
