J/ApJ/880/155ivo://CDS.VizieR/J/ApJ/880/155doi:10.26093/cds/vizier.18800155CDSLiu H.T.Feng H.C.Xin Y.X.Bai J.M.Li S.K.Wang F.2021-04-08T14:51:38Z2021-02-08T14:22:07ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsinfrared-photometryvisible-astronomyphotometryWe present the photometric observations of blazars S5 0716+714 and 3C 273 with high temporal resolution (30-60s) in the I or R bands. The observations were performed with a 1.02m optical telescope from 2007 March 7 to 2012 May 16. The F-test, one-way analysis of variance (ANOVA) test, and z-transformed discrete correlation function (ZDCF) cross-correlation zero lag test are used to search for intra-day variability (IDV). Four and five reliable IDVs survive three tests for S5 0716+714 and 3C 273, respectively. IDVs are found for S5 0716+714 and 3C 273. A flare on 2008 May 8 has {Delta}I~0.06+/-0.01mag in a duration of 0.54hr for S5 0716+714. A flare on 2011 May 10 shows {Delta}R~0.05+/-0.01mag in a duration of 0.40hr for 3C 273. Sharp dips appear on 2011 May 9 for 3C 273 and show {Delta}R~0.05+/-0.01mag. Under the assumptions that the IDV is tightly connected to black hole mass, M*, and that the flare durations are representative of the minimum characteristic timescales, we can estimate upper bounds to M*. In the case of the Kerr black holes, M*<~10^8.91^M_{sun}_ and M*<~10^9.02^M_{sun}_ are given for S5 0716+714 and 3C 273, respectively. These mass measurements are consistent with those measurements reported in the literature. Also, we discuss the origins of optical variations found in this work.2019ApJ...880..155Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/880/155CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/522/846 : Optical monitoring of GeV loud blazars (Xie+, 1999)J/ApJ/613/682 : AGN masses & broad-line region sizes (Peterson+, 2004)J/MNRAS/392/1181 : BV(RI)c photometry of 3C 273 (Dai+, 2009)J/ApJ/716/30 : SED of Fermi bright blazars (Abdo+, 2010)J/ApJ/722/520 : Gamma-ray light curves of Fermi blazars (Abdo+, 2010)J/ApJS/192/12 : Photometry of the blazar PKS 0537-441 (Impiombato+, 2011)J/ApJS/213/26 : Optical light curves of PHL1811 and 3C273 (Fan+, 2014)J/ApJ/783/83 : BVRI photometry of S5 0716+714 (Liao+, 2014)J/ApJS/218/18 : 2004-2012 BVRI obs. of blazar S5 0716+714 (Dai+, 2015)J/MNRAS/448/1060 : Fermi/LAT broad emission line blazars (Ghisellini+, 2015)J/ApJ/849/161 : BVRI light curves of the BL Lac object Mrk 501 (Feng+, 2017)J/AJ/154/42 : BVRI photometry of S5 0716+714 in 2012 (Hong+, 2017)J/ApJS/229/21 : VRI monitoring of the QSO 3C 273 in 2005-2016 (Xiong+, 2017)J/ApJ/876/49 : 10yr reverberation mapping campaign for 3C273 (Zhang+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/880/155https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/880/155http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/880/155https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/880/155https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/880/155http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/880/155GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/880/155/table2Observational data for blazarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintS5-JD[166.9/595.11]? Julian Date of S5 0716+714 observation; JD-2454000dtime.epochdoublenullableS5-Imag[12/12.81]? Apparent I band magnitude of S5 0716+714magphot.mag;em.opt.Ifloatnullablee_S5-Imag[0.004/0.02]? Uncertainty in S5-Imagmagstat.error;phot.magfloatnullableS5-Std[-0.009/0.009]? Mean value of I band std_ij_ of comparison stars of S5 0716+714 (1)magphot.mag;em.opt.Ifloatnullable3C-I-JD[168.27/967.86]? Julian Date of 3C 273 I band observation; JD-2454000dtime.epochdoublenullable3C-Imag[11.72/12.26]? Apparent I band magnitude of 3C 273magphot.mag;em.opt.Ifloatnullablee_3C-Imag[0.004/0.04]? Uncertainty in 3C-Imagmagstat.error;phot.magfloatnullable3C-I-Std[-0.008/0.009]? Mean value of I band std_ij_ of comparison stars of 3C 273 (1)magphot.mag;em.opt.Ifloatnullable3C-R-JD[1331.73/2063.87] Julian Date of 3C 273 I band observation; JD-2454000dtime.epochdouble3C-Rmag[12.5/12.7] Apparent R band magnitude of 3C 273magphot.mag;em.opt.Rfloate_3C-Rmag[0.003/0.03] Uncertainty in 3C-Rmagmagstat.error;phot.magfloat3C-R-Std[-0.01/0.01] Mean value of R band std_ij_ of comparison stars of 3C 273 (1)magphot.mag;em.opt.Rfloat