A Study of Young Brown Dwarfs in the Mid Infrared
Abstract
We present findings on the mid infrared colors (3-24 microns) of a sample of forty-six young( 10 100Myrs) field brown dwarfs with spectral types M thru L. The infrared data came from Spitzer's IRAC and MIPS instruments, as well as WISE's preliminary release data. When looking at SEDs we find seven of seventeen M type objects showing excesses at 12 and 24 microns likely due to a disk that is unexpected for their age. We also find that L types in general have redder near-IR colors than their field counterparts that persist up to about 5 microns. Young L-type brown dwarfs are known to have redder near-IR colors than their field counterparts. We discuss the plausibility of mechanisms causing these unusually red colors in both the near-IR and mid-IR. These mechanisms could help to understand the red color also found in the exoplanets HR8799BCD.
- Publication:
-
American Astronomical Society Meeting Abstracts #219
- Pub Date:
- January 2012
- Bibcode:
- 2012AAS...21934527L