AAS 205th Meeting, 9-13 January 2005
Session 25 Galaxy Evolution Explorer Mission
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[25.10] Classification and properties of astrophysical objects from the matched GALEX and SDSS catalogs

A. Conti (STScI), L. Bianchi (Johns Hopkins), GALEX Science Team

We use the GALEX (Galaxy Evolution Explorer) Medium Imaging Survey (MIS) and All-Sky Imaging Survey (AIS) data available in the GALEX internal release IR0.9 matched to the SDSS release DR2 in the overlapping regions, to classify objects by comparing the multi-band photometry (far-UV and near-UV bands from GALEX, five optical bands from SDSS) to model colors. The matched source catalogs cover 124 (MIS) and 376 (AIS) square degrees, and include about 485,000 and 378,000 sources respectively. The GALEX AIS data reach a typical magnitude of 20.5 (AB system) and the MIS of 23.5 in the UV. The catalogs allow us to significantly increase the statistics of several classes of astrophysical objects, such as hot stars and low-redshift QSOs (see Bianchi et al. ApJL in press for first results - available from http://dolomiti.pha.jhu.edu ).

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The author(s) of this abstract have provided an email address for comments about the abstract: bianchi@skysrv.pha.jhu.edu

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© 2004. The American Astronomical Society.