J/A+A/488/73ivo://CDS.VizieR/J/A+A/488/73doi:10.26093/cds/vizier.34880073CDSTrevese D.Boutsia K.Vagnetti F.Cappellaro E.Puccetti S.2008-12-28T22:13:28Z2008-12-28T23:09:23ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesphotometryredshiftedVariability is a property shared by virtually all active galactic nuclei (AGNs), and was adopted as a criterion for their selection using data from multi epoch surveys. Low Luminosity AGNs (LLAGNs) are contaminated by the light of their host galaxies, and cannot therefore be detected by the usual colour techniques. For this reason, their evolution in cosmic time is poorly known. Consistency with the evolution derived from X-ray detected samples has not been clearly established so far, also because the low luminosity population consists of a mixture of different object types. LLAGNs can be detected by the nuclear optical variability of extended objects. Several variability surveys have been, or are being, conducted for the detection of supernovae (SNe). We propose to re-analyse these SNe data using a variability criterion optimised for AGN detection, to select a new AGN sample and study its properties. We analysed images acquired with the wide field imager at the 2.2m ESO/MPI telescope, in the framework of the STRESS supernova survey. We selected the AXAF field centred on the Chandra Deep Field South where, besides the deep X-ray survey, various optical data exist, originating in the EIS and COMBO-17 photometric surveys and the spectroscopic database of GOODS.2008A&A...488...73Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/488/73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+, 2002)II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2004)J/ApJS/155/271 : Chandra Deep Field-South: Optical spectroscopy (Szokoly+ 2004)J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005)J/A+A/449/951 : GOODS-MUSIC sample: multicolour catalog (Grazian+, 2006)J/A+A/465/1099 : Redshift catalog of 691 objects in CDFS (Ravikumar+, 2007)J/A+A/479/49 : Supernova rates from STRESS (Botticella+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/488/73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/488/73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/488/73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/488/73https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/488/73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/488/73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/488/73/table2 (Catalogue of the variable objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/488/73/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/488/73/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/488/73/table2?GETtext/xml+votable180.050000true53.3291667-27.69580560.0055555555555555566/35934-35935 35957https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/488/73?format=asciiX-rayOpticaldefaultJ/A+A/488/73/table2Catalogue of the variable objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[TBV2008]Sequential numbermeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmag1V magnitude of present work (rescaled to V_EIS_)magphot.mag;em.opt.VfloatsigmaStandard deviation of the light curvemagstat.stdev;phot.magfloatsigma*Normalized standard deviation of the light curvemagstat.stdev;phot.magfloatEIS? EIS name (JHHMMSS.ss+DDMMSS.s)meta.idcharUmag? EIS U magnitude in AB systemmagphot.mag;em.opt.UfloatnullableBmag? EIS B magnitude in AB systemmagphot.mag;em.opt.BfloatnullableVmag? EIS V magnitude in AB systemmagphot.mag;em.opt.VfloatnullableRmag? EIS R magnitude in AB systemmagphot.mag;em.opt.RfloatnullableS? Sellarity index from EIS cataloguesrc.class.starGalaxyfloatnullable[WDK2001]? COMBO-17 namemeta.idintnullableClassCOMBO-class (1)src.classcharz? Spectroscopic redshiftsrc.redshiftfloatnullableNotesNotes on the nature of the object (2)meta.notecharXID? X-ray identification (3)meta.idintnullabler_XID[d] Reference not in Lehmer et al. (2005) (4)meta.ref;pos.framecharl_FXLimit flag on FXmeta.code.errorcharFX? X-ray flux in the (2-8keV) band (3)mW.m**-2phot.flux;em.X-raydoublenullabler_FX[de] Reference not Lin ehmer et al. (2005) (4)meta.ref;pos.framechar