The Faint Sky Variability Survey - Who's Faint and Variable?

Details The Faint Sky Variability Survey - Who's Faint and Variable? The Faint Sky Variability Survey - Who's Faint and Variable?

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.5801h&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #58.01; Bulletin of the American Astronomical Society, Vol. 34, p.739

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The Faint Sky Variability Survey is a large (23 sq. deg.), deep field (V=17-24 mags), optical (BVI), photometric (0.005-0.1 mags), and proper motion (30''/yr) survey using the Wide-Field Camera at the Isaac Newton Telescope on La Palma. Time-sampled observations span 10's of minutes to years and provide a unique database for studies of faint population classes (e.g. Kuiper Belt objects, cataclysmic variables, pulsating stars, very low-mass dwarfs, and AGN). Here we present a study of general variability as a function of the time-sampling (nightly, weekly, yearly), magnitude (V), and color (B-V, V-I) for more than 80,000 point sources detected. The fraction of variable sources overall is found to be approximately constant at a few percent for the majority of the magnitude range. The implications of our results, with comparison to other variability surveys, will be discussed. MEH acknowledges support from by a NASA/Space Grant Fellowship, NASA Grant #NGT-40008.

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