Near Infrared Photometry of L and T Dwarfs

Details Near Infrared Photometry of L and T Dwarfs Near Infrared Photometry of L and T Dwarfs

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12..664s&link_type=abstract

The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August

Astronomy and Astrophysics

Astrophysics

Brown Dwarfs, Spectral Classification, Near Infrared Photometry

Scientific paper

To better understand and model the atmospheres of L (Teff ˜2200 K to 1400 K) and T (Teff ⪉ 1300 K) dwarfs, we've obtained K- and L-band photometry with the Keck I telescope for a representative sample. These observations were motivated in part by our desire to understand the abundance of CH4 and H2O particularly at the L to T transition where CO reacts with H2 to produce these molecules. Here we present our most recent observations, discuss the trends we observe in color, and compare the Keck K and L' filters with the new Mauna Kea Observatory (MKO) K and L' filters.

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