J/AJ/136/259 Second GALEX UV variability catalog (GUVV-2) (Wheatley+, 2008)
The second GALEX ultraviolet variability (GUVV-2) catalog.
Wheatley J.M., Welsh B.Y., Browne S.E.
<Astron. J., 136, 259-266 (2008)>
=2008AJ....136..259W 2008AJ....136..259W
ADC_Keywords: Stars, variable; Ultraviolet; Photometry
Keywords: galaxies: active - stars: variables: other - ultraviolet: general
Abstract:
We present the second Galaxy Evolution Explorer (GALEX) Ultraviolet
Variability (GUVV-2) Catalog, which contains information on 410 newly
discovered time-variable sources gained through simultaneous near UV
(NUV 1750-2750Å) and far-UV (FUV 1350-1750Å) photometric
observations. Source variability was determined by comparing the NUV
and/or FUV fluxes derived from orbital exposures recorded during a
series of multiple observational visits to 169 GALEX fields on the
sky.
Description:
We have used the GALEX FUV and NUV-band photometric data catalogs
compiled during the period 2003 June-2006 June, which reside in the
Multi-Misison Archive at the Space Telescope Science Institute (MAST).
Only the GALEX fields observed on ten or more occasions (and with
exposures of more than 200s) were included in our present analysis.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 48 169 GALEX fields analyzed for variability
table2.dat 153 410 The GALEX ultraviolet variability catalog
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See also:
J/AJ/130/825 : GALEX ultraviolet variability catalog (Welsh+, 2005)
J/ApJS/173/185 : GALEX ultraviolet atlas of nearby galaxies (Gil de Paz+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 26 A26 --- Field Field name
28- 30 A3 --- Survey GALEX survey (1)
32- 34 I3 --- Nvis Number of visits
36- 41 F6.2 deg RAdeg Right Ascension in decimal degrees (J2000)
43- 48 F6.2 deg DEdeg Declination in decimal degrees (J2000)
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Note (1): GALEX surveys as follows:
DIS = Deep Imaging Survey
GII = Guest Investigator observations
NGS = Nearby Galaxy Survey
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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 identification (JHHMMSS.s+DDMMSS.s)
20- 38 A19 --- OName SDSS or USNO-B1 identification (1)
40- 70 A31 --- SIMBAD Simbad identification
72- 74 A3 --- Type Source type (PQ = Possible Quasar)
76-101 A26 --- Field GALEX field
103-104 I2 --- o_NUVmag Number of NUV (177-300nm) detections
106-110 F5.2 mag NUVmag Maximum GALEX/NUV band magnitude
112-115 F4.2 mag NUVamp Amplitude of NUV band observations
117-118 I2 --- o_FUVmag Number of FUV (120-177nm) detections
120-124 F5.2 mag FUVmag ? Maximum GALEX/FUV band magnitude
126-129 F4.2 mag FUVamp ? Amplitude of FUV band observations
131-135 F5.2 mag Bmag ? USNO-B1/SDSS B/g band magnitude
137 A1 --- f_Bmag [i] Magnitude from USNO-B1
139-143 F5.2 mag Rmag ? USNO-B1/SDSS R/r band magnitude
145 A1 --- f_Rmag [i] Magnitude from USNO-B1
147-151 F5.2 mag Imag ? USNO-B1/SDSS I/i band magnitude
153 A1 --- f_Imag [i] Magnitude from USNO-B1
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Note (1): USNO-B1 sources have a format of HHMM±DDMMSSs
while SDSS sources have a format of JHHMMSS.SS±DDMMSS.S.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 26-Jan-2011