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New Low-mass Stars and Brown Dwarfs with Disks in the Chamaeleon I Star-forming Region 1
| Content Provider | Semantic Scholar |
|---|---|
| Author | Muench, August |
| Copyright Year | 2008 |
| Abstract | We have used images obtained with the Infrared Array Camera and the Multiband Imaging Photometer onboard the Spitzer Space Telescope to search for low-mass stars and brown dwarfs with circumstellar disks in the Chamaeleon I star-forming region. Through optical spectroscopy of sources with red colors in these data, we have identified seven new disk-bearing members of the cluster. Three of these objects are probably brown dwarfs according to their spectral types (M8, M8.5, M8L0). Three of the other new members may have edge-on disks based on the shapes of their infrared spectral energy distributions. One of the possible edge-on systems has a steeply rising slope from 4.5 to 24 μm, indicating that it could be a class I source (star+disk+envelope) rather than a class II source (star+disk). If so, then it would be one of the least massive known class I protostars (M5.75, M ∼ 0.1 M⊙). Subject headings: accretion disks — planetary systems: protoplanetary disks — stars: formation — stars: low-mass, brown dwarfs — stars: pre-main sequence |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/0805.3722v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Color DVD region code Dwarfism Floppy disk GUCY2C protein, human Medical Subject Headings Physical object Planetary scanner Stars, Celestial photometers |
| Content Type | Text |
| Resource Type | Article |
