Disks around Young Brown Dwarfs
| dc.creator | Liu, Michael C. | |
| dc.date | 2002-07-22 | |
| dc.date.accessioned | 2026-07-25T18:42:15Z | |
| dc.description | We present some results from a systematic survey for disks around spectroscopically identified young brown dwarfs and very low mass stars. We find that ~75% of our sample show intrinsic IR excesses, indicative of circum(sub)stellar disks. The observed excesses are correlated with Halpha emission, consistent with a common disk accretion origin. Because the excesses are modest, conventional analyses using only IR colors would have missed most of the sources with disks. In the same star-forming regions, we find that disks around brown dwarfs and T Tauri stars are contemporaneous; assuming coevality, this demonstrates that substellar disks are at least as long-lived as stellar disks. Altogether, the frequency and properties of circumstellar disks are similar from the stellar regime down to the substellar and planetary-mass regime. This offers compelling evidence of a common origin for most stars and brown dwarfs. | |
| dc.description | 4 pages; to appear in Proceedings of IAU 211: Brown Dwarfs, in press | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0207477 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0207477 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/57743 | |
| dc.subject | Astrophysics | |
| dc.title | Disks around Young Brown Dwarfs | |
| dc.type | text |