AAS 205th Meeting, 9-13 January 2005
Session 11 Brown Dwarfs and Exoplanets
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[11.03] Phoenix High Resolution Observations of Ultracool Dwarfs

J. A. Harvin, J. E. Gizis (University of Delaware), A. Schweitzer (University of Hamburg)

High resolution K-band spectra of three ultracool dwarfs of spectral types M8, L4.5, and L8 were obtained from the Phoenix spectrograph on the Gemini South 8-meter telescope. These observations yield the effective temperatures and surface gravities of these ultracool objects. Their spectral energy distributions are compared to brown dwarf model atmospheres with and without atmospheric dust.

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.