Ultraviolet Observations of a Very Young Brown Dwarf

Details Ultraviolet Observations of a Very Young Brown Dwarf Ultraviolet Observations of a Very Young Brown Dwarf

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9841g&link_type=abstract

HST Proposal ID #9841

Physics

Hst Proposal Id #9841 Cool Stars

Scientific paper

We propose to obtain an ultraviolet spectrum of a 25 jupiter mass, 10 million-year old brown dwarf in the TW Hya association. 2MASSW J1207334-393254 shows extremely strong H alpha emission, making it the brightest and closest member of a rare class of active young brown dwarfs.The UV observations will characterize the hot gas that is deduced to surround this brown dwarf. Very little about brown dwarf activity is understood, but X-ray, optical, and radio studies have shown that brown dwarf activity is quite different from cool star activity. Observations are needed to understand the source of the observed optical emission lines. The proposed observations will supplement existing optical and scheduled Chandra X-ray data.

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