J/AJ/130/825 GALEX ultraviolet variability catalog (Welsh+, 2005)
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 2005AJ....130..825W
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 1.2° diameter star fields currently being
surveyed by the GALEX satellite in two ultraviolet bands (NUV
1750-2750Å, FUV 1350-1750Å) 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).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 131 44 GALEX Ultraviolet Variability catalog, V1.0.
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See also:
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
II/259 : The SDSS Photometric Catalog, Release 3 (Abazajian+ 2005)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- GUVV GALEX Ultraviolet Variability catalog ID
(JHHMMSS.s+DDMMSS.s)
20 A1 --- Var [VT] Variable or Transient variability type
22- 33 A12 --- USNO The USNO-B1.0 all-sky catalog (Cat. I/284)
designation
35- 58 A24 --- OName Possible identification
60- 77 A18 --- Type Most likely source type (2)
79- 81 A3 --- Survey GALEX survey mode of the sky field in which
the object was discovered (3)
83- 85 I3 --- NUVobs Number of NUV (175-275nm) observations
87- 88 I2 --- NUVdet Number of NUV (175-275nm) detections
90- 94 F5.2 mag NUVmax Maximum near-UV (175-275nm) magnitude
96- 99 F4.2 mag NUVdm ? The near-UV (175-275nm) amplitude
101-103 I3 --- FUVobs Number of FUV (135-175nm) observations
105-106 I2 --- FUVdet Number of FUV (135-175nm) detections
108-112 F5.2 mag FUVmax ? Maximum far-UV (135-175nm) magnitude
114-117 F4.2 mag FUVdm ? The far-UV (135-175nm) amplitude
119-123 F5.2 mag gmag ? SDSS DR3 (Cat. II/259) g band magnitude
124 A1 --- f_gmag [*] Indicates an uncertain SDSS magnitude
126-130 F5.2 mag rmag ? SDSS DR3 (Cat. II/259) r band magnitude
131 A1 --- f_rmag [*] Indicates an uncertain SDSS magnitude
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Note (2): PV indicates a periodic variable.
Note (3): The GALEX survey modes are defined as follows:
AIS = All-sky Imaging Survey
MIS = Medium Imaging Survey
DIS = Deep Imaging Survey
NGS = Nearby Galaxy Survey
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History:
* 08-Feb-2006: From electronic version of the journal
* 01-Dec-2008: Unique entries in table2 (duplicated lines were removed)
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 26-Oct-2005