J/ApJ/827/118ivo://CDS.VizieR/J/ApJ/827/118doi:10.26093/cds/vizier.18270118CDSLu K.-X.Du P.Hu C.Li Y.-R.Zhang Z.-X.Wang K.Huang Y.-K.,Bi S.-L.Bai J.-M.Ho L.C.Wang J.-M.2019-03-06T08:39:11Z2017-01-04T13:30:57ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleispectroscopygalaxy-kinematicsphotometryNGC 5548 is the best-observed reverberation-mapped active galactic nucleus with long-term, intensive monitoring. Here we report results from a new observational campaign between 2015 January and July. We measure the centroid time lag of the broad H{beta} emission line with respect to the 5100{AA} continuum and obtain {tau}_cent_=7.20_-0.35_^+1.33^days in the rest frame. This yields a black hole mass of M.=8.71_-2.61_^+3.21^x10^7^M_{sun}_ using a broad H{beta} line dispersion of 3124+/-302km/s and a virial factor of f_BLR_=6.3+/-1.5 for the broad-line region (BLR), consistent with the mass measurements from previous H{beta} campaigns. The high-quality data allow us to construct a velocity-binned delay map for the broad H{beta} line, which shows a symmetric response pattern around the line center, a plausible kinematic signature of virialized motion of the BLR. Combining all the available measurements of H{beta} time lags and the associated mean 5100{AA} luminosities over 18 campaigns between 1989 and 2015, we find that the H{beta} BLR size varies with the mean optical luminosity, but, interestingly, with a possible delay of 2.35_-1.25_^+3.47^ years. This delay coincides with the typical BLR dynamical timescale of NGC 5548, indicating that the BLR undergoes dynamical changes, possibly driven by radiation pressure.2016ApJ...827..118Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/827/118CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/225/29 : NGC 5548 43 year-long monitoring in H{beta} (Bon+, 2016)J/ApJ/825/126 : SEAMBHs. V. The third year (Du+, 2016)J/ApJ/821/56 : Space telescope RM project III. NGC 5548 LC (Fausnaugh+, 2016)J/ApJ/806/129 : Space telescope RM project II. Swift data (Edelson+, 2015)J/ApJ/806/128 : Space telescope RM project I. NGC5548 (De Rosa+, 2015)J/ApJ/806/22 : SEAMBHs IV. H{beta} time lags (Du+, 2015)J/ApJ/782/45 : SEAMBHs. I. Mrk 142, Mrk 335, and IRAS F12397+3333 (Du+, 2014)J/ApJ/779/109 : Long-term monitoring of NGC 5548 (Peterson+, 2013)J/ApJ/702/1353 : H{beta} and V-band light curves of NGC 4051 (Denney+, 2009)J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)J/A+A/422/925 : Profile variability in lines of NGC 5548 (Shapovalova+ 2004)J/A+A/371/79 : NGC 5548 UBVRI phot. & Halpha, Hbeta fluxes (Dietrich+, 2001)J/ApJ/510/659 : Size and Structure of AGN in NGC 5548 (Peterson+, 1999)J/A+A/314/43 : NGC 5548 Profile variability (Kollatschny+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/827/118https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/827/118http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/827/118https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/827/118https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/827/118http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/827/118GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.322582951404819e-19 3.852589004194616e-19defaultJ/ApJ/827/118/table4All the RM measurements of NGC 5548e_FWHM[36/574]? FWHM uncertaintykm/sstat.error;phys.angSizeintnullablee_Hblag[0.3/7.3] Negative uncertainty on Hblagdstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintYrData set year numbermeta.idintDate1UT date of starting observationstime.start;obsnullableDate2UT date of ending observationstime.end;obsnullableTObservation time in decimal yearsyrtime.epochfloatFvar[0.1/0.5]? Variability amplitude (1)src.var.amplitudefloatnullablelogL5100[42.5/43.6] Log of 5100{AA} luminositylog(1e-07W)phys.luminosity;em.optfloate_logL5100[0.08/0.2] logL5100 uncertaintylog(1e-07W)stat.errorfloatlogLHb[41/42]? Log of H{beta} luminositylog(1e-07W)phys.luminosity;em.optfloatnullablee_logLHb[0.03/0.1]? logLHb uncertaintylog(1e-07W)stat.errorfloatnullableHblag[4/27] H{beta} lagdtime;arith.difffloatE_Hblag[0.6/6] Positive uncertainty on Hblagdstat.error;stat.maxfloatFWHM[4674/12771]? Full width half maximum of H{beta} line from mean spectrakm/sspect.line.width;em.line.HbetaintnullableSig[1934/4266]? Dispersion velocity of H{beta} line from mean spectrakm/sphys.veloc.dispersion;spect.lineintnullablee_Sig[5/642]? Sig uncertaintykm/sstat.errorintnullableFWHM2[4044/11177]? Full width half maximum of H{beta} line from rms spectrakm/sspect.line.width;em.line.Hbetaintnullablee_FWHM2[112/2266]? FWHM2 uncertaintykm/sstat.errorintnullableSig2[1687/4270]? Dispersion velocity of H{beta} line from rms spectrakm/sphys.veloc.dispersion;spect.lineintnullablee_Sig2[30/768]? Sig2 uncertaintykm/sstat.errorintnullablelogM[7.4/8.2]? BH mass (logM_{dot}_) (2)log(solMass)phys.massfloatnullablee_logM[0.1/0.3]? Negative uncertainty on logMlog(solMass)stat.errorfloatnullableE_logM[0.1/0.4]? Positive uncertainty on logMlog(solMass)stat.error;stat.maxfloatnullableRefReference(s) (3)meta.ref;pos.framecharf_RefFlag on Ref (4)meta.codecharJ/ApJ/827/118/table1Continuum and H{beta} fluxes for NGC 5548recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJD1Spectroscopic (F5100, H{beta}) observation date; JD-2450000dtime.epochfloatF5100[2.7/6.5] 5100A continuum spectroscopic flux; 10^-15erg/s/cm^2^/Angstrom1e-17W.m**-2.nm**-1phot.fluxfloate_F5100[0.2/0.5] Uncertainty in F51001e-17W.m**-2.nm**-1stat.errorfloatFHb[5.6/8.7] H{beta} spectroscopic flux; 10^-13erg/s/cm^2^1e-16W.m**-2phot.fluxfloate_FHb[0.2/0.4] Uncertainty in FHb1e-16W.m**-2stat.errorfloatJD2? Photometric (V-band) observation date; JD-2450000dtime.epochfloatnullableVmag[1.3/1.7]? Johnson V-band; instrumental magnitude, arbitrary zeropointmagphot.mag;em.opt.Vfloatnullablee_Vmag[0.01/0.08]? Uncertainty in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullable