AAS 204th Meeting, June 2004
Session 40 Galaxies
Poster, Tuesday, June 1, 2004, 10:00am-7:00pm, Ballroom

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[40.18] Extragalactic Variable Objects in GNAT Image Archives

E.R. Craine (WRC/GNAT/CSU), R.B. Culver (CSU/GNAT), M.S. Giampapa (NSO), A.L. Kraus (CalTech/GNAT), R.A. Tucker (GPO/GNAT)

The Global Network of Astronomical Telescopes (GNAT) has used the image output of its prototype, the Moving Object and Transient Event Search System (MOTESS), to create a photometric database of two years observations of over 2.5 million celestial point sources. These observations have been made through the full 24-hr range of Right Ascension at a fixed declination of +3d18m, with a field of view of 48 arcmin. The integration time in each field is 191 sec allowing detection of objects as faint as 20 mag. This catalog has been searched for variable objects at the 6-sigma level, resulting in a list of about 36,000 newly discovered variables. The majority of these objects are stars of a wide range of types, however, some of the variables are expected to be extragalactic objects. We report progress on a program to identify known extragalactic sources in the observed region of the sky and to develop light curves for these objects using the archived GNAT images.

We appreciate the support of Walker & Company for this research program.

The author(s) of this abstract have provided an email address for comments about the abstract: ercraine@wrc-inc.com

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