J/ApJ/731/97ivo://CDS.VizieR/J/ApJ/731/97doi:10.26093/cds/vizier.17310097CDSSarajedini V.L.Koo D.C.Klesman A.J.Laird E.S.Perez Gonzalez P.G.,Mozena M.2023-08-16T12:57:43Z2012-11-20T15:36:35ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleihst-photometryredshiftedx-ray-sourcesinfrared-sourcesWe identify 85 variable galaxies in the GOODS North and South fields using five epochs of Hubble Space Telescope Advance Camera for Survey V-band (F606W) images spanning 6 months. The variables are identified through significant flux changes in the galaxy's nucleus and represent ~2% of the survey galaxies. With the aim of studying the active galaxy population in the GOODS fields, we compare the variability-selected sample with X-ray and mid-IR active galactic nucleus (AGN) candidates. Forty-nine percent of the variables are associated with X-ray sources identified in the 2Ms Chandra surveys. Twenty-four percent of X-ray sources likely to be AGNs are optical variables and this percentage increases with decreasing hardness ratio of the X-ray emission. Stacking of the non-X-ray-detected variables reveals marginally significant soft X-ray emission. Forty-eight percent of mid-IR power-law sources are optical variables, all but one of which is also X-ray detected. Thus, about half of the optical variables are associated with either X-ray or mid-IR power-law emission. The slope of the power-law fit through the Spitzer IRAC bands indicates that two-thirds of the variables have BLAGN-like spectral energy distributions. Among those galaxies spectroscopically identified as AGNs, we observe variability in 74% of broad-line AGNs and 15% of NLAGNs. The variables are found in galaxies extending to z~3.6.2011ApJ...731...97Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/731/97CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)II/261 : GOODS initial results (Giavalisco+, 2004)J/ApJS/193/13 : Spitzer/IRAC sources in the EGS I. SEDs (Barro+, 2011)J/ApJ/723/737 : Variability selected AGNs in GOODS (Villforth+,2010)J/ApJ/697/1369 : GOODS Ks-selected multiwavelength compilations (Bundy+, 2009)J/ApJ/675/234 : Mass functions for galaxies z<4 (Perez-Gonzalez+, 2008)J/ApJ/689/687 : GOODS-N spectroscopic survey (Barger+, 2008)J/ApJS/179/19 : CDFS survey: 2 Ms source catalogs (Luo+, 2008)J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)J/ApJ/653/1004 : Galaxies at 1.4<~z<~3.0 in GOODS-North Field (Reddy+, 2006)J/ApJ/640/603 : Catalog of AGNs in the GOODS fields (Treister+, 2006)J/A+A/437/883 : K20 survey: spectroscopic catalogue (Mignoli+, 2005)J/AJ/127/3121 : TKRS catalog of GOODS-North Field (Wirth+, 2004)J/ApJS/155/271 : CDF-S: Optical spectroscopy (Szokoly+, 2004)J/A+A/428/1043 : Redshifts from VIMOS VLT Deep Survey (Le Fevre+, 2004)J/AJ/127/3137 : Hawaii redshifts in the ACS-GOODS region (Cowie+, 2004)J/AJ/127/180 : The Hawaii Hubble Deep Field North (Capak+, 2004)J/A+A/392/395 : Ks-band magnitudes of the K20 sample (Cimatti+, 2002)J/AJ/121/2895 : HDF-N Caltech faint galaxy redshift survey. XIII. (Cohen 2001)J/ApJ/513/34 : HDF photometric redshifts catalog (Fernandez-Soto+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/731/97https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/731/97http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/731/97https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/731/97https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/731/97http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/731/97GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/731/97/table1 (Variable nucleus galaxies in GOODS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/731/97/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/731/97/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/731/97/table1?GETtext/xml+votable180.050000true188.9272155662.208122220.0055555555555555566/11252 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/731/97?format=asciiX-rayInfrareddefaultJ/ApJ/731/97/table1Variable nucleus galaxies in GOODSSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGOODS identification numbermeta.id;meta.mainintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainVmagMean V_2.5_ magnitude (mean HST/ACS V magnitude within r=2.5 pixel aperture)magphot.mag;em.opt.RfloatCIConcentration index (magnitude difference between the r=2.5pix photometry and the r=5pix)magphys.size;arith.ratiofloaterrStandard deviation around the mean (1)magsrc.var.amplitudefloatSigniVariability significancestat.fit.goodness;src.varfloatzRedshiftsrc.redshiftfloatn_z[ph/sp] (ph)otometric or (sp)ectroscopic redshiftmeta.notecharr_z? Redshift reference (2)meta.ref;pos.frameintnullableX/IRX-ray (from Chandra 2Ms) and/or IR (from Spitzer/IRAC) AGN?instr.bandpasscharOCatCross-match with other GOODS catalogs within 1"meta.ref.urlintnullable