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J/AJ/130/825 GALEX ultraviolet variability catalog (Welsh+, 2005)
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table2.dat
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Beginning of ReadMe :J/AJ/130/825 GALEX ultraviolet variability catalog (Welsh+, 2005)
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The GALEX ultraviolet variability catalog.
Welsh B.Y., Wheatley J.M., Heafield K., Seibert M., Browne S.E., Salim S.,
Rich R.M., Barlow T.A., Bianchi L., Byun Y.-I., Donas J., Forster K.,
Friedman P.G., Heckman T.M., Jelinsky P.N., Lee Y.-W., Madore B.F.,
Malina R.F., Martin D.C., Milliard B., Morrissey P., Neff S.G.,
Schiminovich D., Siegmund O.H.W., Small T., Szalay A.S., Wyder T.K.
<Astron. J., 130, 825-831 (2005)>
=2005AJ....130..825W
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ADC_Keywords: Stars, variable ; Ultraviolet ; Photometry
Keywords: stars: flare - stars: variables: other - ultraviolet: stars
Abstract:
We present version 1.0 of the NASA Galaxy Evolution Explorer (GALEX)
ultraviolet variability (GUVV) catalog, which contains information on
84 time-variable and transient sources gained with simultaneous
near-ultraviolet (NUV) and far-ultraviolet (FUV) photometric
observations. These time-variable sources were serendipitously
revealed in the various 1.2deg diameter star fields currently being
surveyed by the GALEX satellite in two ultraviolet bands (NUV
1750-2750AA, FUV 1350-1750AA) with limiting AB magnitudes of
23-25. The largest amplitude variable objects currently detected by
GALEX are M dwarf flare stars, which can brighten by 5-10mag 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.
Description:
We have used the GALEX FUV- and NUV-band photometric imaging data
recorded during the period 2003 June to 2004 August, which reside in
the Multi-Mission Archive at the Space Telescope Science Institute
(MAST).