J/A+A/602/A28ivo://CDS.VizieR/J/A+A/602/A28doi:10.26093/cds/vizier.36020028CDSMarleau F.R.Clancy D.Habas R.Bianconi M.2017-06-12T08:32:16Z2017-05-30T12:43:22ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesredshiftedWe investigate the possible presence of active galactic nuclei (AGN) in dwarf galaxies and other nearby galaxies to identify candidates for follow-up confirmation and dynamical mass measurements. We identify candidate active central massive black holes (CMBH) using their mid-infrared emission, verify their nature using existing catalogues and optical line emission diagnostics, and study the relationship between their mass and the mass of their host galaxy. We use the Wide-field Infrared Survey Explorer (WISE) All-Sky Release Source Catalog and examine the infrared colours of a sample of dwarf galaxies and other nearby galaxies in order to identify both unobscured and obscured candidate AGN by applying the infrared colour diagnostic. Stellar masses of galaxies are obtained using a combination of three independent methods. Black hole masses are estimated using the bolometric luminosity of the AGN candidates and computed for three cases of the bolometric-to-Eddington luminosity ratio. We identify 303 candidate AGN, of which 276 were subsequently found to have been independently identified as AGN via other methods. The remaining 9% require follow-up observations for confirmation. The activity is detected in galaxies with stellar masses from ~10^6^ to 10^9^M_{sun}_; assuming the candidates are AGN, the black hole masses are estimated to be ~10^3^-10^6^M_{sun}_, adopting L_bol_=0.1L_Edd_. The black hole masses probed are several orders of magnitude smaller than previously reported for centrally located massive black holes. We examine the stellar mass versus black hole mass relationship in this low galaxy mass regime. We find that it is consistent with the existing relation extending linearly (in log-log space) into the lower mass regime. These findings suggest that CMBH are present in low-mass galaxies and in the Local Universe, and provide new impetus for follow-up dynamical studies of quiescent black holes in local dwarf galaxies.2017A&A...602A..28Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/602/A28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/670/92 : New sample of low-mass black holes in AGN (Greene+, 2007)J/ApJ/755/167 : Low-mass black holes in SDSS Seyfert 1 galaxies (Dong+, 2012)J/ApJ/775/116 : z<0.06 active black hole galaxies from SDSS-DR8 (Reines+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/602/A28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/602/A28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/602/A28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/602/A28https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/602/A28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/602/A28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/602/A28/table2 (List of dwarf galaxies with IR signatures of active massive black holes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/602/A28/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/602/A28/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/602/A28/table2?GETtext/xml+votable180.050000true287.8892917-62.17288890.005555555555555556Cone search capability for table J/A+A/602/A28/table3 (List of non-dwarf galaxies with IR signatures of active massive black holes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/602/A28/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/602/A28/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/602/A28/table3?GETtext/xml+votable180.050000true213.28875-65.33916670.0055555555555555566/1 1676 1701 4122 4151 4155 4162 4168 4171 4184 4196 4226 4237 4825 5002 5033 5093 5100 5103 5370 5437 5455 5479 5491 5499-5500 5566 5569 5582 5604 5634 5698 5715 5730 5770 5848 5862 5890 5939 5946 5955 5982-5983 5985 5993 6015 6065 6075 6098 6104 6139 6142 6213 6217 6352 6396 6406 6408 6436 6444 6484 6504 6564 6571 6599 7173 7177 7193 7208 7243 7251 7253 7258 7273 7281 7293 7298-7299 7303 7306 7361 7432 7436 7466 7488 7624 7769 8015 8208 8262 9053 9086 9150 9194 9242 9366 9452 9601 9750 9824 9923 9957 9972 9986 9994 10021 10085 10183 10214 10217 10289 10393 10515 10619 10658 10689 10691 10706 10730 10839 10869 10878-10879 10907 10979 10995 11054 11065 11072 11097 11109 11149 11180 11231 11241 11251 11253-11254 11319 11354-11355 11382 11405 11419 11438 11445-11446 11466 11491 11597 11617 11838 11843 11851 11875 11909 11930 12390 12397 17215 17229 17308 17316 17555 17558 17565 17574 17727 17773 17777 18006 18028 18063 18074 18084 18299 18309 18367 18404 18590 18793 18800 19023 19048 19114 19121 19137 19417 19456 19697 19753 19778 20010 20192 20739 21970 21982 21999 22005 22365 23054 23211 23217 23566 24829 25169 25843 25919 25929 25936 25948 25966 25974 25989 26006 26017 26025 26044 26048 26167 26212 26229-26230 26260 26265 26373 26402 26411 26414 26525 26549 26601 26606 26973 27005 27030 27043 27075 27080-27081 27098 27105 27225 27233 27322 27342 27370 27375 27390 27402 27419 27461 27478 27485 27514 27524 27582 27588 27749 27773 27801 27815 27823 28147 28171 28457 28535 28614 30044 31146 31316 31323 31365 31394 31406 31436 31459 31656 31714 32402 34099 34535 36240 36763 36780 37116 41132 41586 43438 43671 43754 43829 43874 45757 47206 47701 48989 49009 49097https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/602/A28?format=asciiInfraredOpticaldefaultJ/A+A/602/A28/table2List of dwarf galaxies with IR signatures of active massive black holesSimbadNameSimbad column added by the CDSmeta.idcharNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Source right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Source declination (J2000)pos.eq.dec;meta.mainz? Redshiftsrc.redshiftdoublenullableDist? DistanceMpcpos.distancedoublenullablelogM*? Log stellar masslog(solMass)phys.massfloatnullableW1-W2WISE w1mpro-w2mpro color indexmagphot.color;em.IR;em.IRfloatW2-W3WISE w2mpro-w3mpro color indexmagphot.color;em.IR;em.IRfloatlogMBHLog black hole masslog(solMass)phys.massfloatImage? Image number in Figure 2meta.idintnullablen_ImageNote on Image (1)meta.notecharJ/A+A/602/A28/table3List of non-dwarf galaxies with IR signatures of active massive black holesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharRAJ2000Source right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Source declination (J2000)pos.eq.dec;meta.mainz? Redshiftsrc.redshiftdoublenullableDist? DistanceMpcpos.distancedoublenullablelogM*? Log stellar masslog(solMass)phys.massfloatnullableW1-W2WISE w1mpro-w2mpro color indexmagphot.color;em.IR;em.IRfloatW2-W3WISE w2mpro-w3mpro color indexmagphot.color;em.IR;em.IRfloatlogMBHLog black hole masslog(solMass)phys.massfloatImage? Image number in Figure 2meta.idintnullablen_ImageNote on Image (1)meta.notechar