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The GFCAT: a catalog of ultraviolet variables observed by GALEX with sub-minute resolution
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The GFCAT: a catalog of ultraviolet variables observed by GALEX with sub-minute resolution
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Paper
The GFCAT: a catalog of ultraviolet variables observed by GALEX with sub-minute resolution
2023
Overview
We have performed the first systematic search of the full GALEX data archive for astrophysical variability on timescales of seconds to minutes by rebinning data across the whole mission to 30-second time resolution. The result is the GALEX Flare Catalog (GFCAT) which describes 1426 ultraviolet variable sources, including stellar flares, eclipsing binaries, \\(\\delta\\) Scuti and RR Lyrae variables, and Active Galactic Nuclei (AGN). Many of these sources have never previously been identified as variable. We have also assembled a table of observations of ultraviolet flares and accompanying statistics and measurements, including energies, and of candidate eclipsing stars. This effort was enabled by a significantly-enhanced version of the gPhoton software for analyzing time-domain GALEX data; this gPhoton2 package is available to support follow-on efforts.
Publisher
Cornell University Library, arXiv.org
