J/ApJ/679/140ivo://CDS.VizieR/J/ApJ/679/140doi:10.26093/cds/vizier.16790140CDSTreister E.Krolik J.H.Dullemond C.2017-06-01T08:52:47Z2010-10-07T09:23:44ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomysloan-photometryinfrared-photometryultraviolet-astronomyRecent work has suggested that the fraction of obscured AGNs declines with increasing luminosity, but it has been difficult to quantify this trend. Here we attempt to measure this fraction as a function of luminosity by studying the ratio of mid-infrared to intrinsic nuclear bolometric luminosity in unobscured AGNs. Because the mid-infrared is created by dust reprocessing of shorter wavelength nuclear light, this ratio is a diagnostic of f_obsc_, the fraction of solid angle around the nucleus covered by obscuring matter. In order to eliminate possible redshift dependences while also achieving a large dynamic range in luminosity, we have collected archival 24um MIPS photometry from objects with z~1 in the Sloan Digital Sky Survey DR5, the Great Observatories Origins Deep Survey, and the Cosmic Evolution Survey. To measure the bolometric luminosity for each object, we used archival optical data supplemented by GALEX data.2008ApJ...679..140Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/679/140CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)II/261 : GOODS initial results (Giavalisco+, 2004)J/ApJ/640/603 : Catalog of AGNs in the GOODS fields (Treister+, 2006)J/ApJS/172/383 : AGN candidates in the COSMOS field (Trump+, 2007)J/AJ/133/1780 : GALEX/SDSS quasar catalog (Trammell+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/679/140https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/679/140http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/679/140https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/679/140https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/679/140http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/679/140GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/679/140/sources (Observed properties of sources in SDSS and COSMOS samples)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/679/140/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/679/140/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/679/140/sources?GETtext/xml+votable180.050000true165.31837557.48069440.0055555555555555565/1519 2629 6814 6/0 5116 5311 5409 5437 5761 5797 6044 6046 6067 6069 6071 6075 6090 6112 6113 6114 6419 6506 7424 7445 7464 8521 9146 9148 9150 9463 9469 9470 9471 9507 9635 9640 9641 9642 9828 10152 10153 10154 10183 10189 10191 10194 10200 10202 10212 10214 10312 10401 10432 10512 10513 10515 10664 10857 11073 11217 11230 11231 11249 11252 11349 11388 11424 11434 11460 11520 11834 11933 17215 17345 17506 17752 17755 17763 18398 18511 18552 18778 18948 18950 19688 19996 26004 26042 26056 26057 26062 26273 26279 26282 26283 26310 26313 26314 26323 27030 27245 27247 27344 27407 27440 27468 27500 27503 27513 27515 27651 27653 27659 27661 27665 27666 27667 27668 27674 27773 27861 27907 27947 28032 28653 314302.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/679/140?format=asciiUVOpticalInfrareddefaultJ/ApJ/679/140/sourcesObserved properties of sources in SDSS and COSMOS samplesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[SDSS/COSMOS] Name of samplemeta.id;src.samplecharNameSDSS namemeta.id;meta.maincharzRedshift (spectroscopic)src.redshiftfloatumagSDSS u band AB magnitudemagphot.mag;em.opt.UfloatgmagSDSS g band AB magnitudemagphot.mag;em.opt.BfloatrmagSDSS r band AB magnitudemagphot.mag;em.opt.RfloatimagSDSS i band AB magnitudemagphot.mag;em.opt.IfloatzmagSDSS z band AB magnitudemagphot.mag;em.opt.Ifloatl_F24umUpper limit flag on F24ummeta.code.errorcharF24umSpitzer/MIPS 24 micron band flux (1)fW.m**-2phot.flux.density;em.IR.15-30umfloatFNUVGALEX NUV band flux (1)fW.m**-2phot.flux;em.UVfloatE_FNUV? Upper 1{sigma} bound on FNUV (1)fW.m**-2stat.error;stat.maxfloatnullablee_FNUV? Lower 1{sigma} bound on FNUV (1)fW.m**-2stat.errorfloatnullableFFUVGALEX FUV band flux (1)fW.m**-2phot.flux;em.UVfloatE_FFUV? Upper 1{sigma} bound on FFUV (1)fW.m**-2stat.error;stat.maxfloatnullablee_FFUV? Lower 1{sigma} bound on FFUV (1)fW.m**-2stat.errorfloatnullableLbolLog of the bolometric luminositylog(1e-07W)phys.luminosityfloatSDSSDisplay the SDSS data for this quasarmeta.ref.urlcharSimbadSimbad column added by the CDSchar_RAPositions derived from SDSS or COSMOS name (right ascension part)degpos.eq.ra;meta.main_DEPositions derived from SDSS or COSMOS name (declination part)degpos.eq.dec;meta.main