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Young , Low-mass Brown Dwarfs with Mid-Infrared Excesses
| Content Provider | Semantic Scholar |
|---|---|
| Author | Allers, Katelyn N. Kessler-Silacci, J. E. Cieza, Lucas A. Jaffe, Daniel T. |
| Copyright Year | 2006 |
| Abstract | We have combined new I, J, H, and Ks imaging of portions of the Chamaeleon II, Lupus I, and Ophiuchus star-forming clouds with with 3.6 to 24 µm imaging from the Spitzer Legacy Program, " From Molecular Cores to Planet Forming Disks " , to identify a sample of 19 young stars, brown dwarfs and sub-brown dwarfs showing mid-infrared excess emission. The resulting sample includes sources with luminosities of 0.5 > log(L * /L ⊙) >-3.1. Six of the more luminous sources in our sample have been previously identified by other surveys for young stars and brown dwarfs. Five of the sources in our sample have nominal masses at or below the deuterium burning limit (12 M J). Over three decades in luminosity, our sources have an approximately constant ratio of excess to stellar luminosity. We compare our observed SEDs to theoretical models of a central source with a passive irradiated circumstellar disk and test the effects of disk inclination, disk flaring, and the size of the inner disk hole on the strength/shape of the excess. The observed SEDs of all but one of our sources are well fit by models of flared and/or flat disks. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/0602249v2.pdf |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/0602249v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Deuterium Dietary Iron Disk storage Dwarfism Field electron emission Floppy disk GUCY2C protein, human Hardware-based full disk encryption Luminous Studio Lupus Vulgaris Offset binary Stars, Celestial Stellar (payment network) |
| Content Type | Text |
| Resource Type | Article |
