Searching for Brown Dwarfs using the Gemini Science Archive

Details Searching for Brown Dwarfs using the Gemini Science Archive Searching for Brown Dwarfs using the Gemini Science Archive

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.7807c&link_type=abstract

American Astronomical Society Meeting 210, #78.07; Bulletin of the American Astronomical Society, Vol. 39, p.186

Astronomy and Astrophysics

Astronomy

Scientific paper

The Gemini Science Archive (GSA) is a repository for all data taken on the two Gemini telescopes. After an 18 months proprietary period, these data are made available to the astronomical community. We have obtained from the GSA several high galactic latitude GMOS deep field images to search for L and T field brown dwarfs (BDs). We present analysis of two fields each imaged in two SDSS filters, i' and z'. We have used GAIA/SExtractor to identify and characterize point-like sources with i'-z'>2. These deep GSA images contain potential brown dwarfs with i'<24 magnitudes. These are sources which have a photometric errors <=10%. Future spectroscopy and J-band photometry will allow us to separate true BDs from high redshift quasars, which have similar optical colors.

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