J/AJ/137/3761ivo://CDS.VizieR/J/AJ/137/3761doi:10.26093/cds/vizier.51373761CDSBianchi L.Hutchings J.B.Efremova B.Herald J.E.Bressan A.Martin C.2017-11-29T11:48:37Z2011-10-26T18:17:08ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frquasarsultraviolet-astronomyvisible-astronomysloan-photometryWe present a sample of spectroscopically confirmed quasi-stellar objects (QSOs) with FUV-NUV color (as measured by Galaxy Evolution Explorer (GALEX) photometry, FUV band: 1344-1786{AA}, NUV band: 1771-2831{AA}) 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<2.6.2009AJ....137.3761Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/137/3761CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/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 Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/137/3761https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/137/3761http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/137/3761https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/137/3761https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/137/3761http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/137/3761GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/137/3761/table1 (The UV-blue QSO sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/137/3761/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/137/3761/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/137/3761/table1?GETtext/xml+votable180.050000true119.115498320.90418360.0055555555555555566/547 552 556 4116 4785 6139 6208 6232 6247 6448 6521 6567 6576 6608 6617 6622 6625 6628 7169 7203 7228 7272 7275 7288 7304 7319 7360 7368 7378 7379 7383 7385 7477 7479 8234 9601 9603 9604 9643 9949 9987 10017 10022 10112 10114 10144 10146 10152 10189 11493 12555 17150 17215 17233 17251 17298 17308 17316 17317 17495 17502 17506 17511 17520 17577 17582 17746 17764 17825 17920 18073 18384 18386 18390 18519 18525 18538 18539 18545 18546 18582 18583 18589 18616 18628 18751 18765 18775 18786 18789 18791 18793 18794 18800 18831 18836 18838 18844 18880 19028 19056 19101 19201 19326 19417 19424 19426 19646 19685 19686 19698 19734 19739 19761 19991 19994 20003 22714 22715 23061 23066 23074 25951 26046 26049 26055 26056 26061 26065 26074 26077 26096 26168 26981 26987 26990 26994 26995 27215 27224 27225 27236 27288 27680 31421 31431 31437 31457 31458 36723 36759 36765 36782 36789 49019 491047.447298006782415e-19 1.4134638842407062e-18https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/137/3761?format=asciiUVOpticaldefaultJ/AJ/137/3761/table1The UV-blue QSO samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_GALEXSimbad column added by the CDSmeta.ref.urlcharGALEXGALEX source name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharprimaryFUVmagGALEX FUV AB magnitudemagphot.mag;em.UV.100-200nmfloate_FUVmagError in FUVmagmagstat.error;phot.mag;em.UV.FUVfloatNUVmagGALEX NUV AB magnitudemagphot.mag;em.UVfloate_NUVmagError in NUVmagmagstat.error;phot.magfloatumagSDSS u band AB magnitudemagphot.mag;em.opt.Ufloate_umagError in umagmagstat.error;phot.mag;em.opt.UfloatgmagSDSS g band AB magnitudemagphot.mag;em.opt.Bfloate_gmagError in gmagmagstat.error;phot.mag;em.opt.BfloatrmagSDSS r band AB magnitudemagphot.mag;em.opt.Rfloate_rmagError in rmagmagstat.error;phot.mag;em.opt.RfloatimagSDSS i band AB magnitudemagphot.mag;em.opt.Ifloate_imagError in imagmagstat.error;phot.mag;em.opt.IfloatzmagSDSS z band AB magnitudemagphot.mag;em.opt.Ifloate_zmagError in zmagmagstat.error;phot.mag;em.opt.IfloatzRedshiftsrc.redshiftfloatE(B-V)Reddeningmagphot.color.excessfloatcomSource structure: "pointlike" or "extended"src.class.starGalaxycharSloanDisplay the SDSS data for this quasarmeta.ref.urlcharDR5Display the details from SDSS-DR5 (Cat. II/276)meta.ref.urlcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJ/AJ/137/3761/table2Objects with repeated GALEX observations discrepant by >2{sigma} errorDate2Observation date of matched GALEX2time.epoch;obsnullabledt2.1Exposure time of matched GALEX2 (FUV)stime.duration;obs.exposureintdt2.2Exposure time of matched GALEX2 (NUV)stime.duration;obs.exposureintSurveySurvey (MIS or GII)meta.idcharComComments (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_z[<>] Flag on z (G1)meta.codecharGALEXGALEX source name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharFUVmagGALEX FUV magnitude (AB)magphot.mag;em.UV.100-200nmfloate_FUVmagFUV magnitude (AB)magstat.error;phot.mag;em.UV.FUVfloatNUVmagGALEX NUV magnitude (AB)magphot.mag;em.UVfloate_NUVmagNUV magnitude (AB)magstat.error;phot.magfloatDateObservation datetime.epoch;obsnullabledt.1Exposure time (FUV)stime.duration;obs.exposureintdt.2Exposure time (NUV)stime.duration;obs.exposureintGALEX2Matched GALEX ID (JHHMMSS.ss+DDMMSS.s)meta.idcharDistDistance between GALEX and GALEX2arcsecpos.angDistancefloatFUV2? GALEX FUV magnitude (AB) of GALEX2magphot.mag;em.UV.100-200nmfloatnullablee_FUV2? FUV magnitude (AB) of matched GALEX2magstat.errorfloatnullableNUV2? GALEX NUV magnitude (AB) of GALEX2magphot.mag;em.UVfloatnullablee_NUV2? NUV magnitude (AB) of matched GALEX2magstat.errorfloatnullableJ/AJ/137/3761/table3H{alpha} measurements (restframe) of the low-redshift QSOsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGALEXGALEX source (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharHaWH{alpha} line width in Angstroms0.1nmspect.line.widthfloatW(Ha)H{alpha} equivalent width in Angstroms0.1nmspect.line.eqWidth;em.line.HalphafloatlogFHaHalpha flux (in 10^-17^erg/s/cm^2^/{AA})1e-19W.m**-2.nm**-1phot.flux;em.line.Halphafloat