J/ApJ/876/49ivo://CDS.VizieR/J/ApJ/876/49doi:10.26093/cds/vizier.18760049CDSZhang Z.-X.Du P.Smith P.S.Zhao Y.Hu C.Xiao M.Li Y.-R.,Huang Y.-K.Wang K.Bai J.-M.Ho L.C.Wang J.-M.2021-03-26T06:58:30Z2020-10-27T12:42:44ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiphotometryvisible-astronomyspectroscopyDespite many decades of study, the kinematics of the broad-line region of 3C 273 are still poorly understood. We report a new, high signal-to-noise, reverberation mapping campaign carried out from 2008 November to 2018 March that allows the determination of time lags between emission lines and the variable continuum with high precision. The time lag of variations in H{beta} relative to those of the 5100{AA} continuum is 146.8_-12.1_^+8.3^days in the rest frame, which agrees very well with the Paschen-{alpha} region measured by the GRAVITY at The Very Large Telescope Interferometer. The time lag of the H{gamma} emission line is found to be nearly the same as that for H{beta}. The lag of the FeII emission is 322.0_-57.9_^+55.5^days, longer by a factor of ~2 than that of the Balmer lines. The velocity-resolved lag measurements of the H{beta} line show a complex structure that can be possibly explained by a rotation-dominated disk with some inflowing radial velocity in the H{beta}-emitting region. Taking the virial factor of f_BLR_=1.3, we derive a BH mass of dM/dt=4.1_-0.4_^+0.3^x10^8^M_{sun}_ and an accretion rate of 9.3L_Edd_c^-2^ from the H{beta} line. The decomposition of its Hubble Space Telescope images yields a host stellar mass of M*=10^11.3+/-0.7^M_{sun}_, and a ratio of dM/dt/M*~2.0x10^-3^ in agreement with the Magorrian relation. In the near future, it is expected to compare the geometrically thick BLR discovered by the GRAVITY in 3C 273 with its spatially resolved torus in order to understand the potential connection between the BLR and the torus.2019ApJ...876...49Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/876/49CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/613/682 : AGN central masses & broad-line regions (Peterson+, 2004)J/ApJ/687/78 : FeII emission in quasars (Hu+, 2008)J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)J/ApJ/716/993 : LAMP: reverberation mapping of H and He lines (Bentz+, 2010)J/ApJ/779/109 : Long-term monitoring of NGC 5548 (Peterson+, 2013)J/MNRAS/431/836 : Type 1 AGN at low z. III. (Stern+, 2013)J/ApJ/782/45 : SEAMBHs. I. Mrk 142, Mrk 335 and IRAS F12397+3333 (Du+, 2014)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/ApJ/793/108 : SEAMBHs. II. Continuum and Hbeta LCs (Wang+, 2014)J/ApJS/217/26 : Lick AGN monitoring 2011: light curves (Barth+, 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/825/126 : SEAMBHs. V. The third year (Du+, 2016)J/ApJ/827/118 : A new reverberation mapping campaign on NGC 5548 (Lu+, 2016)J/ApJ/818/30 : Lag measurements for 15 z<0.8 QSOs from SDSS-RM (Shen+, 2016)J/ApJ/837/131 : Space telescope RM project. V. NGC5548 (Pei+, 2017)J/ApJ/866/133 : Continuum-H{beta} LCs of 5 Seyfert 1 (De Rosa+, 2018)J/ApJ/869/142 : Monitoring AGNs with H{beta} Asymmetry (MAHA). I. (Du+, 2018)J/ApJ/856/6 : SEAMBHs IX. 10 new H{beta} light curves (Du+, 2018)J/AJ/159/259 : Opt-NIR light curves of the quasar 3C 273 (Figaredo+, 2020)http://www.astronomy.ohio-state.edu/asassn : ASAS-SN home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/876/49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/876/49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/876/49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/876/49https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/876/49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/876/49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.322582951404819e-19 3.852589004194616e-19OpticaldefaultJ/ApJ/876/49/table1Continuum and emission-line fluxes of 3C 273Vmag[12.5/13.3] V band magnitudemagphot.mag;em.opt.VfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJD1[2454795/2458195]? Julian Date of spectradtime.epochdoublenullableF5100[14/24.1]? Continuum flux at 5100{AA}, in 10^-15^erg/s/cm^2^/{AA}1e-17W.m**-2.nm**-1phot.fluxfloatnullablee_F5100[0.2/0.3]? Uncertainty in F51001e-17W.m**-2.nm**-1stat.errorfloatnullableFHbeta[15.5/19.7]? H{beta} emission-line flux, in 10^-13^erg/s/cm^2^1e-16W.m**-2phot.fluxfloatnullablee_FHbeta[0.15/0.3]? Uncertainty in FHbeta1e-16W.m**-2stat.errorfloatnullableFHgamma[4.9/7.2]? H{gamma} emission-line flux1e-16W.m**-2phot.fluxfloatnullablee_FHgamma[0.1/0.2]? Uncertainty in FHgamma1e-16W.m**-2stat.errorfloatnullableFFe[12.9/16]? Fe emission-line flux1e-16W.m**-2phot.fluxfloatnullablee_FFe[0.2/0.5]? Uncertainty in FFe1e-16W.m**-2stat.errorfloatnullableObs1? Spectrum observatory (1)meta.codecharJD2[2454795/2458218.7] Julian Date of V band photometrydtime.epochdoublee_Vmag[0.01/0.11] Uncertainty in Vmagmagstat.error;phot.magfloatObs2Photometry observatory (1)meta.codechar