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J/AJ/137/3761       Ultraviolet quasi-stellar objects        (Bianchi+, 2009)

Ultraviolet quasi-stellar objects. Bianchi L., Hutchings J.B., Efremova B., Herald J.E., Bressan A., Martin C. <Astron. J., 137, 3761-3777 (2009)> =2009AJ....137.3761B
ADC_Keywords: QSOs ; Ultraviolet ; Photometry, SDSS Keywords: quasars: absorption lines - quasars: emission lines - quasars: general - ultraviolet: galaxies Abstract: We present a sample of spectroscopically confirmed quasi-stellar objects (QSOs) with FUV-NUV color (as measured by Galaxy Evolution Explorer (GALEX) photometry, FUV band: 1344-1786Å, NUV band: 1771-2831Å) bluer than canonical QSO templates and than the majority of known QSOs. We analyze their FUV to NIR colors, luminosities, and optical spectra. The sample includes a group of 150 objects at low redshift (z<0.5), and a group of 21 objects with redshift 1.7<z<2.6. Description: The sample was extracted from the catalog of matched UV/optical sources of Bianchi (2008, Future Directions in Ultraviolet Spectroscopy, ed. Steenberg Van et al., in press), obtained by matching the UV sources in the GALEX third data release (GR3, http://galex.stsci.edu) to the Sloan Digital Sky Survey (SDSS) sixth data release (DR6). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 155 172 The UV-blue QSO sample table2.dat 147 23 Objects with repeated GALEX observations discrepant by >2σ error table3.dat 46 150 Hα measurements (restframe) of the low-redshift QSOs
See also: II/282 : SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007) II/294 : SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009) J/AJ/130/825 : GALEX ultraviolet variability catalog (Welsh+, 2005) J/AJ/133/1780 : GALEX/SDSS quasar catalog (Trammell+, 2007) J/AJ/136/259 : Second GALEX UV variability catalog (GUVV-2) (Wheatley+, 2008) J/ApJ/664/53 : UV photometry of GALEX QSO candidates (Atlee+, 2007) J/ApJ/690/1181 : UV-bright quasars (Syphers+, 2009) http://www.sdss.org : SDSS Home Page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1 A1 --- f_z [<>] Flag on z (G1) 3- 8 A6 --- --- [GALEX_] 9- 27 A19 --- GALEX GALEX source name (JHHMMSS.ss+DDMMSS.s) 29- 39 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000) 41- 51 F11.7 deg DEdeg Declination in decimal degrees (J2000) 53- 57 F5.2 mag FUVmag GALEX FUV AB magnitude 59- 63 F5.2 mag e_FUVmag Error in FUVmag 65- 69 F5.2 mag NUVmag GALEX NUV AB magnitude 71- 75 F5.2 mag e_NUVmag Error in NUVmag 77- 81 F5.2 mag umag SDSS u band AB magnitude 83- 87 F5.2 mag e_umag Error in umag 89- 93 F5.2 mag gmag SDSS g band AB magnitude 95- 99 F5.2 mag e_gmag Error in gmag 101-105 F5.2 mag rmag SDSS r band AB magnitude 107-111 F5.2 mag e_rmag Error in rmag 113-117 F5.2 mag imag SDSS i band AB magnitude 119-123 F5.2 mag e_imag Error in imag 125-129 F5.2 mag zmag SDSS z band AB magnitude 131-135 F5.2 mag e_zmag Error in zmag 137-140 F4.2 --- z Redshift 142-145 F4.2 mag E(B-V) Reddening 147-155 A9 --- com Source structure: "pointlike" or "extended"
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1 A1 --- f_z [<>] Flag on z (G1) 3- 21 A19 --- GALEX GALEX source name (JHHMMSS.ss+DDMMSS.s) 23- 27 F5.2 mag FUVmag GALEX FUV magnitude (AB) 29- 32 F4.2 mag e_FUVmag FUV magnitude (AB) 34- 38 F5.2 mag NUVmag GALEX NUV magnitude (AB) 40- 43 F4.2 mag e_NUVmag NUV magnitude (AB) 45- 54 A10 "DD/MM/YYYY" Date Observation date 56- 59 I4 s dt.1 Exposure time (FUV) 60 A1 --- --- [/] 61- 64 I4 s dt.2 Exposure time (NUV) 66- 84 A19 --- GALEX2 Matched GALEX ID (JHHMMSS.ss+DDMMSS.s) 86- 89 F4.2 arcsec Dist Distance between GALEX and GALEX2 91- 95 F5.2 mag FUV2 ?=- GALEX FUV magnitude (AB) of GALEX2 97-100 F4.2 mag e_FUV2 ? FUV magnitude (AB) of matched GALEX2 102-106 F5.2 mag NUV2 ?=- GALEX NUV magnitude (AB) of GALEX2 108-111 F4.2 mag e_NUV2 ? NUV magnitude (AB) of matched GALEX2 113-122 A10 "DD/MM/YYYY" Date2 Observation date of matched GALEX2 124-128 I5 s dt2.1 Exposure time of matched GALEX2 (FUV) 129 A1 --- --- [/] 130-134 I5 s dt2.2 Exposure time of matched GALEX2 (NUV) 136-138 A3 -- Survey Survey (MIS or GII) 140-147 A8 --- Com Comments (1)
Note (1): Comments as follows: ! = denotes magnitude discrepancy (NUV or FUV) greater than 3σ, E = denotes that the EDGE artifact flag is set, for matched measurement e = denotes that the EDGE artifact flag is set, for original source P = denotes SExtractor flag 1 set (object has neighbors), for matched measurement p = denotes SExtractor flag 1 set (object has neighbors), for original source B = denotes SExtractor flag 2 set (object was originally blended with another one), for matched measurement b = denotes SExtractor flag 2 set (object was originally blended with another one), for original source
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [GALEX] 7- 25 A19 --- GALEX GALEX source (JHHMMSS.ss+DDMMSS.s) 27- 32 F6.1 0.1nm HaW Hα line width in Angstroms 34- 39 F6.1 0.1nm W(Ha) Hα equivalent width in Angstroms 41- 46 F6.2 10-19W/m2/nm logFHa Halpha flux (in 10-17erg/s/cm2/Å)
Global notes: Note (G1): Indicating if QSO redshift greater or less than 1.
History: * 10-Sep-2011: From electronic version of the journal * 16-Nov-2011: in table2, corrected sign of GALEX name (original J234019.81+005907.9 corrected into J234019.81-005907.9)
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 10-Sep-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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