J/ApJ/678/116ivo://CDS.VizieR/J/ApJ/678/116doi:10.26093/cds/vizier.16780116CDSSeth A.Agueros M.Lee D.Basu-Zych A.2017-10-12T13:00:36Z2010-09-29T11:19:29ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleigalaxy-classification-systemsabsolute-magnitudeWe study galaxies that host both nuclear star clusters and AGNs, implying the presence of a massive black hole. We select a sample of 176 galaxies with previously detected nuclear star clusters that range from ellipticals to late-type spirals. We search for AGNs in this sample using optical spectroscopy and archival radio and X-ray data. We find galaxies of all Hubble types and with a wide range of masses (10^9^-10^11^M_{sun}_) hosting both AGNs and nuclear star clusters. From the optical spectra, we classify 10% of the galaxies as AGN and an additional 15% as composite, indicating a mix of AGN and star formation spectra. The fraction of nucleated galaxies with AGNs increases strongly as a function of galaxy and nuclear star cluster mass. For galaxies with both a nuclear star cluster and a black hole, we find that the masses of these two objects are quite similar. However, nondetections of black holes in Local Group nuclear star clusters show that not all clusters host black holes of similar masses. We discuss the implications of our results for the formation of nuclear star clusters and massive black holes.2008ApJ...678..116Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/678/116CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/AJ/127/105 : Nuclear star clusters in late-type spiral galaxies (Boker+,https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/678/116https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/678/116http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/678/116https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/678/116https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/678/116http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/678/116GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/678/116/table1 (Galaxies with nuclear star clusters sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/678/116/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/678/116/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/678/116/table1?GETtext/xml+votable180.050000true12.7670833-7.06447220.0055555555555555565/6935 6978 6/4446 4989 4991 5181 5586 5589 5590 5623 5634 5980 6007 6047 6623 7110 7303 7485 7584 7726 8195 8225 8359 9109 9639 10240 10723 10847 10888 10900 10901 10930 10941 11173 11446 11448 11460 12005 15955 16441 16898 17493 17592 17606 17927 18002 18011 20353 20720 24735 24777 24912 25173 25344 25438 25599 25960 26128 26265 26317 26338 26361 27458 27606 27719 27721 27731 27733 27734 27735 27736 27738 27739 27763 27764 27765 27767 27769 27771 27773 27857 27859 27862 27904 27910 27919 27936 27938 27939 27944 27945 27948 27949 28032 28033 28044 28045 28077 28294 28304 31469 31795 31880 33137 33337 33795 33920 33951 34051 34052 34334 34352 35193 35536 35746 35908 35929 36134 36151 36152 36236 36242 36276 36785 37436 38639 38841 40234 40302 40363 40472 40722 42025 42923 43318 43824 43948 43953 44003 45305 45367 46170 46175 46346 46417 46467 46491 46525 46689 46808 46916 46999 48484https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/678/116?format=asciiOpticaldefaultJ/ApJ/678/116/table1Galaxies with nuclear star clusters sampleTTypeMorphological typesrc.morph.typecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharTNumerical Morphological typesrc.morph.typefloatDistDistanceMpcpos.distance;pos.heliocentricfloatBMAGAbsolute B band magnitudemagphys.magAbs;em.opt.BfloatlogMG? Log of galaxy masslog(solMass)phys.massfloatnullabler_logMGReference (1)meta.ref;pos.framecharReff? Nuclear star cluster effective radius (2)arcsecphys.angSize;srcfloatnullablelogMNCLog of nuclear star cluster masslog(solMass)phys.massfloatSrefSpectra reference (3)meta.bibcharSimbadSimbad column added by the CDScharNEDSimbad column added by the CDSchar_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.main