J/MNRAS/440/476ivo://CDS.VizieR/J/MNRAS/440/476doi:10.26093/cds/vizier.74400476CDSFalomo R.Bettoni D.Karhunen K.Kotilainen J.K.Uslenghi M.2024-08-09T20:14:41Z2015-04-10T15:47:31ZCDS support team

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

cds-question@unistra.frquasarsredshiftedvisible-astronomysloan-photometryWe present a photometrical and morphological study of the properties of low-redshift (z<0.5) quasars based on a large and homogeneous data set of objects derived from the Sloan Digital Sky Survey Data Release 7. This study over number by a factor of ~5 any other previous study of quasi-stellar object (QSO) host galaxies at low redshift undertaken either on ground or on space surveys. We used ~400 quasars that were imaged in the SDSS Stripe 82 that is up to 2mag deeper than standard Sloan images. For these quasars we undertake a study of the host galaxies and of their environments. In this paper we report the results for the quasar hosts. We are able to detect the host galaxy for more than 3/4 of the whole data set and characterize the properties of their hosts. We found that QSO hosts are dominated by luminous galaxies of absolute magnitude M*-3<M(R)<M*. For the unresolved objects we computed an upper limit to the host luminosity. For each well-resolved quasar we are also able to characterize the morphology of the host galaxy that turn out to be more complex than what found in previous studies. QSOs are hosted in a variety of galaxies from pure ellipticals to complex/composite morphologies that combine spheroids, disc, lens and halo. The black hole (BH) mass of the quasar, estimated from the spectral properties of the nuclei, is poorly correlated with the total luminosity of the host galaxy. However, taking into account only the bulge component we found a significant correlation between the BH mass and the bulge luminosity of the host.2014MNRAS.440..476Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/440/476CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/440/476https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/440/476http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/440/476https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/440/476https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/440/476http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/440/476GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/440/476/qsos (The low-redshift QSO sample, and the properties of their host galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/440/476/qsos?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/440/476/qsos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/440/476/qsos?GETtext/xml+votable180.050000true309.238680.028990.0055555555555555565/4437-4438 4453-4454 4501-4502 4522 4774 5797-5798 5802 7509 6/0 2 12290 17406-17407 17663 17725 17727 17746-17747 17756-17757 17762 17764 17767 17769-17772 17776 17805 17807 17809 17811 17820-17821 17826-17829 17831 17834 17836 17838 17840-17842 17856 17858 17999 18002 18012 18014 18019-18020 18023-18024 18026-18030 18033 18061 18063 18067 18069-18070 18073-18076 18086 18092-18094 18096 18112 18114 18176 18178 18686-18687 18751 18765 18769 18771-18773 18775-18778 18780 18782 18786 18789-18791 18793-18796 18798 18800 18836-18838 18840-18841 18843-18845 18850 18852-18853 18855 18858 18860-18862 18864 18880 18882 19007 19021 19027-19028 19031 19033-19035 19037-19038 19041 19043 19046-19048 19050-19053 19056 19091 19093 19105 19107 19109 19111 19114 19116 19120-19122 19136 19200 23103 23144-23145 23147 23181 23185 23187 23196 23198 23203-23204 23207 23212-23213 23216 23232 30031 30035 30040-30041 30043-30044 30046 30053 30064 36863 49149 491512.381800341673347e-19 2.821731604724377e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/440/476?format=asciiOpticaldefaultJ/MNRAS/440/476/qsosThe low-redshift QSO sample, and the properties of their host galaxiesSeq[1/416] Sequential numbermeta.recordintprimarySDSSSDSS designation (HHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainz[0.1/0.5] Redshiftsrc.redshiftfloatimagSDSS i magnitude (1)magphot.mag;em.opt.IfloatiMAGAbsolute i magnitudemagphys.magAbsfloatNexp[8/75] Number of exposuresmeta.numberintEiExtinction in i band (2)magphys.absorptionfloatpsf[1/1.5] Point spread functionarcsecinstr.det.psffloatDR7Display SDSS-DR7 quasar catalog (Schneider et al., 1990, Cat. VII/260) datameta.ref.urlcharl_i(N)Limit flag on imagNmeta.code.errorchari(N)Nucleus SDSS i magnitudemagphot.mag;em.opt.Ifloatl_i(h)Limit flag on i(h)meta.code.errorchari(h)? Host SDSS i magnitudemagphot.mag;em.opt.Ifloatnullablee_i(h)? rms uncertainty on i(h)magstat.errorfloatnullableRe? Effective nucleus radiuskpcphys.size.radiusfloatnullablee_Re? rms uncertainty on Rekpcstat.errorfloatnullableu_Re[)] Uncertainty flag on Remeta.code.errorcharchi2serSersic fit {chi}^2^ value (4)stat.fit.chi2floatchi2PSFPSF {chi}^2^ value (4)stat.fit.chi2floatCf[rumx] resolved/unresolved class from chi2ser/chi2ser fit (G1)meta.code.classcharT[cfn] Type of environment (3)meta.codecharKcorK correctionmagarith.factor;phot.magfloatR(N)? Nucleus absolute R magnitude (k-corrected)magphys.magAbsfloatnullablel_R(h)Limit flag on RMAGHmeta.code.errorcharR(h)? Host absolute R magnitude (k-corrected)magphys.magAbsfloatnullableRe(h)? Effective host galaxy radiuskpcphys.size.radiusfloatnullableC[rumx] resolved/unresolved host class (G1)meta.code.classchare[0/1]? Ellipticitysrc.ellipticityfloatnullableM[edn] Morphology type (5)meta.code;src.morphchar