Spitzer Space Telescope Observations of M, L, and T Dwarfs

Details Spitzer Space Telescope Observations of M, L, and T Dwarfs Spitzer Space Telescope Observations of M, L, and T Dwarfs

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..357...66c&link_type=abstract

The Spitzer Space Telescope: New Views of the Cosmos ASP Conference Series, Volume 357, proceedings of the conference held 9-12

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first mid-infrared spectra of very low-mass stars and brown dwarfs obtained with the Infrared Spectrograph onboard the Spitzer Space Telescope. We observed GJ 1001 A (M3.5 V), DENIS 0255-4700 (L8), and ɛ Ind Ba/Bb (T1/T6). As expected from the predictions of model atmospheres, the spectra show absorption features of H2O, CH4 at 7.8 μm, and NH3 at 10.5 μm. This is the first detection of the 7.8 μm CH4 band in the spectrum of a brown dwarf and the first detection of NH3 in the atmosphere of a brown dwarf.

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