J/ApJ/727/20ivo://CDS.VizieR/J/ApJ/727/20doi:10.26093/cds/vizier.17270020CDSKuo C.Y.Braatz J.A.Condon J.J.Impellizzeri C.M.V.Lo K.Y.Zaw I.,Schenker M.Henkel C.Reid M.J.Greene J.E.2017-06-22T14:28:16Z2012-09-13T15:03:51ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiastrophysical-masersradio-astronomyradio-galaxiesseyfert-galaxiesObservations of H_2_O masers from circumnuclear disks in active galaxies for the Megamaser Cosmology Project (MCP) allow accurate measurement of the mass of supermassive black holes (BH) in these galaxies. We present the Very Long Baseline Interferometry images and kinematics of water maser emission in six active galaxies: NGC 1194, NGC 2273, NGC 2960 (Mrk 1419), NGC 4388, NGC 6264 and NGC 6323. We use the Keplerian rotation curves of these six megamaser galaxies, plus a seventh previously published, to determine accurate enclosed masses within the central ~0.3pc of these galaxies, smaller than the radius of the sphere of influence of the central mass in all cases.2011ApJ...727...20Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/727/20CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/77 : HI spectral properties of galaxies (Springob+, 2005)J/A+A/530/A147 : Megamaser detection in Seyfert galaxies (Ramolla+, 2011)J/ApJ/695/276 : Search for megamasers in type-2 AGNs (Bennert+, 2009)J/ApJ/678/96 : Extragalactic H2O masers (Braatz+, 2008)J/AJ/131/1236 : Central black holes of spiral galaxies (Dong+, 2006)J/A+A/435/521 : Radio Sources in Low-Luminosity AGNs. IV (Nagar+, 2005)J/PASJ/55/947 : Blazars and Seyfert galaxies accretion rates (Liang+, 2003)J/ApJS/133/77 : VLA radio continuum survey of Seyfert galaxies (Ho+, 2001)J/ApJS/121/473 : A diagnostic diagram for Seyfert 2 Galaxies (Bassani+, 1999)J/A+AS/130/333 : 2112 new 21-cm line measurements (Theureau+ 1998)J/ApJS/112/315 : Spectroscopic parameters of Seyfert nuclei (Ho+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/727/20https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/727/20http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/727/20https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/727/20https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/727/20http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/727/20GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/727/20/sample (The Megamaser sample and BH masses and basic properties of the maser disks)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/727/20/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/727/20/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/727/20/sample?GETtext/xml+votable180.050000true45.954619333-1.1037427780.0055555555555555566/7037 7132 9287 9672 27342 27767 36861https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/727/20?format=asciiRadiodefaultJ/ApJ/727/20/sampleThe Megamaser sample and BH masses and basic properties of the maser disksNameGalaxy namemeta.id;meta.maincharprimaryMlink to maser spots (table 3)meta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of declination (1)pos.eq.dec;meta.maine_RAUncertainty on right ascensionmasstat.error;pos.eq.rafloate_DEUncertainty on declinationmasstat.error;pos.eq.decfloatfp1[h] Flag on e_RA (2)meta.codecharfp[a-g] Flag on position (2)meta.codecharVsysSystemic (recessional) velocity (3)km/sphys.velocinte_VsysVsys uncertainty (4)km/sstat.errorintSpTNED Seyfert spectral typesrc.classcharTNED Hubble morphological typesrc.morph.typecharDistNED Hubble flow distanceMpcpos.distance;pos.heliocentricfloatMassMeasured BH mass1e+07solMassphys.massfloate_MassMass uncertainty (1)1e+07solMassstat.error;phys.massfloatiSizeSize of the inner edge of the maser diskpcphys.angSizefloatoSizeSize of the outer edge of the maser diskpcphys.angSizefloatPA[-131/157] Position angle of the disk plane measured east of north (2)degpos.posAngintl_InclLimit flag on Inclmeta.code.errorcharIncl? Inclination of the maser disk (3)degsrc.orbital.inclinationintnullableRadcCore radius of the Plummer cluster (4)pcphys.size.radiusfloatrho0Central mass density of the Plummer cluster (5)solMass.pc**-3phys.densitydoublemMaxMaximum stellar mass of the Plummer cluster (6)solMassphys.massfloatl_TageLimit flag on Tagemeta.code.errorcharTageLifetime of a cluster (7)yrtime.agedoubleRinfRadius of the gravitational sphere of influence for the maser BH (8)arcsecphys.angSize;srcfloatSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/727/20/table3Maser spotsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharVopVelocity (V_op_) (1)km/sphys.veloc;pos.lsrdoubleoRARight Ascension offset (2)maspos.eq.ra;arith.difffloate_oRAUncertainty in oRAmasstat.errorfloatoDEDeclination offset (2)maspos.eq.dec;arith.difffloate_oDEUncertainty in oDEmasstat.errorfloatFluxFitted peak intensity; mJy/beammJyphot.flux.density;em.radiofloate_FluxUncertainty in FluxmJystat.error;phot.fluxfloat