J/ApJS/263/10ivo://CDS.VizieR/J/ApJS/263/10doi:10.26093/cds/vizier.22630010CDSLu K.-X.Bai J.-M.Wang J.-M.Hu C.Li Y.-R.Du PuXiao M.,Feng H.-C.Li S.-S.Wang J.-G.Zhang Z.-X.Huang Y.-K.2023-09-27T06:57:42Z2022-12-21T12:23:38ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleivisible-astronomyspectroscopyNGC 5548 is one of the active galactic nuclei (AGNs) selected for our long-term spectroscopic monitoring with the Lijiang 2.4m telescope, aiming at investigating the origin and evolution of broad-line regions (BLRs), accurately measuring the mass of supermassive black holes (SMBHs), and understanding the structure and evolution of the AGN. We have performed five-season observations for NGC 5548 with the median sampling interval ranging from 1.25 to 3 days. The light curves of the 5100{AA} continuum and broad emission lines are measured after subtracting contamination of the host galaxy starlight. The time lags of the broad HeII, HeI, H{gamma}, and H{beta} lines with respect to the 5100{AA} continuum are obtained for each season and their mean time lags over the five seasons are 0.69, 4.66, 4.60, and 8.43 days, respectively. The H{gamma} and H{beta} velocity-resolved lag profiles in the seasons of 2015, 2018, 2019, and 2021 are constructed, from which an "M-shaped" structure is found in 2015 but disappears after 2018. Our five- season reverberation mapping (RM) yields an average virial SMBH mass of M_*_/10^7^M_{sun}_=14.22, with a small standard deviation of 1.89. By combining the previous 18 RM campaigns and our five-season campaign for NGC 5548, we find that there exists a time lag of 3.5yr between the changes in the BLR size and optical luminosity. In addition, we construct the BLR radius-luminosity relation and the virial relation for NGC 5548.2022ApJS..263...10Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/263/10CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/510/659 : Size and Structure of AGN in NGC 5548 (Peterson+, 1999)J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)J/A+A/417/515 : I Zw 1 unusual emission line spectrum (Veron-Cetty+, 2004)J/ApJ/683/L115 : Intermediate-line region in quasars (Hu+, 2008)J/ApJS/189/15 : FeII emission in a sample of AGN spectra (Kovacevic+, 2010)J/ApJ/736/86 : FeII emission in SDSS type 1 AGNs (Dong+, 2011)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/ApJS/217/26 : Lick AGN monitoring 2011: light curves (Barth+, 2015)J/ApJ/806/22 : SEAMBHs IV. H{beta} time lags (Du+, 2015)J/ApJS/225/29 : NGC 5548 43 year-long monitoring in H{beta} (Bon+, 2016)J/ApJ/827/118 : A new reverberation mapping campaign on NGC 5548 (Lu+, 2016)J/ApJ/851/21 : SDSS RM project first year of observations (Grier+, 2017)J/ApJ/837/131 : Space telescope RM project. V. NGC5548 monitoring (Pei+, 2017)J/ApJ/866/133 : Continuum-H{beta} light curves 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/ApJ/886/42 : Reverberation mapping & opt. spectra data of AGNs (Du+, 2019)J/ApJ/887/135 : V-band, 5100{AA} and broad emission LCs of Mrk 79 (Lu+, 2019)J/ApJ/877/23 : SEAMBHs. X. RM campaign compilation (Lu+, 2019)J/ApJ/896/1 : SEAMBHs. XI. Mrk 142 X-ray to optical LCs (Cackett+, 2020)J/ApJS/253/20 : SEAMBHs XII. Reberberation mapping for 15 PG QSOs (Hu+, 2021)J/ApJS/258/38 : Iron template spectrum from Mrk493 HST/STIS obs. (Park+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/263/10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/263/10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/263/10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/263/10https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/263/10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/263/10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.8949892233750168e-19 3.8949892233750168e-19OpticaldefaultJ/ApJS/263/10/table2Light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian Date of Observationdtime.epochdoubleF5100[2.76/9.3] AGN continuum at 5100{AA}, 10^-15^erg/s/cm^2^/{AA}1e-17W.m**-2.nm**-1phot.fluxfloate_F5100[0.18/0.6] Error of F51001e-17W.m**-2.nm**-1stat.errorfloatFHeII[0/4.7] Broad He II, integrated over best-fitted profile, 10^-13^erg/s/cm^2^1e-16W.m**-2phot.fluxfloate_FHeII[0.049/0.3] Error of FHeII1e-16W.m**-2stat.errorfloatFHeI[0.226/2.95] Broad He I, integrated over best-fitted profile, 10^-13^erg/s/cm^2^1e-16W.m**-2phot.fluxfloate_FHeI[0.08/0.3] Error of FHeI1e-16W.m**-2stat.errorfloatFHgamma[1.12/5.3] Broad H{gamma}, integrated over best-fitted profile, 10^-13^erg/s/cm^2^1e-16W.m**-2phot.fluxfloate_FHgamma[0.1/0.4] Error of FHgamma1e-16W.m**-2stat.errorfloatFHbeta[4/10.1] Broad H{beta}, integrated over best-fitted profile, 10^-13^erg/s/cm^2^1e-16W.m**-2phot.fluxfloate_FHbeta[0.13/0.4] Error of FFHbeta1e-16W.m**-2stat.errorfloat