The Galex Ultraviolet Variability (GUVV) Catalog
Abstract
We present Version 1.0 of the NASA Galaxy Evolution Explorer (GALEX) ultraviolet variability catalog (GUVV) that contains information on 84 time-variable and transient sources gained with simultaneous near and far ultraviolet photometric observations. These time-variable sources were serendipitously revealed in the various 1.2 degree star fields currently being surveyed by the GALEX satellite in two ultraviolet bands (NUV 1750-2750A, FUV 1350-1750A) with limiting AB magnitudes of 23-25. The largest-amplitude variable objects presently detected by GALEX are M-dwarf flare stars, which can brighten by 5-10 mag in both the NUV and FUV bands during short duration (< 500s) outbursts. Other types of large-amplitude ultraviolet variable objects include ab-type RR Lyrae stars, which can vary periodically by 2-5mag in the GALEX FUV band. This first GUVV catalog lists galactic positions and possible source identifications in order to provide the astronomical community with a list of time-variable objects that can now be repeatedly observed at other wavelengths. We expect the total number of time-variable source detections to increase as the GALEX mission progresses, such that later version numbers of the GUVV catalog will contain substantially more variable sources.
Cite
@article{arxiv.astro-ph/0504489,
title = {The Galex Ultraviolet Variability (GUVV) Catalog},
author = {Barry Y. Welsh and Jonathan M. Wheatley and Kenneth Heafield and Mark Seibert and Stanley E. Browne and Samir Salim and R. Michael Rich and Tom A. Barlow and Luciana Bianchi and Yong-Ik Byun and Jose Donas and Karl Forster and Peter G. Friedman and Timothy M. Heckman and Patrick N. Jelinsky and Young-Wook Lee and Barry F. Madore and Roger F. Malina and D. Christopher Martin and Bruno Milliard and Patrick Morrissey and Susan G. Neff and David Schiminovich and Oswald H. W. Siegmund and Todd Small and Alex S. Szalay and Ted K. Wyder},
journal= {arXiv preprint arXiv:astro-ph/0504489},
year = {2008}
}