J/A+A/376/775ivo://CDS.VizieR/J/A+A/376/775doi:10.26093/cds/vizier.33760775CDSShapovalova A.I.Burenkov A.N.Carrasco L.Chavushyan V.H.,Doroshenko V.T.Dumont A.M.Lyuty V.M.Valdes J.R.Vlasuyk V.V.,Bochkarev N.G.Collin S.Legrand F.Mikhailov V.P.Spiridonova O.I.,Kurtanidze O.Nikolashvili M.G.2001-09-16T14:48:06Z2001-09-16T14:47:58ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiinfrared-photometryvisible-astronomybroad-band-photometrykron-cousins-photometryWe have monitored the AGN 3C 390.3 between 1995 and 2000. A historical B-band light curve dating back to 1966 shows a large increase in brightness during 1970-1971, followed by a gradual decrease down to a minimum in 1982. During the 1995-2000 lapse the broad H{beta} emission and the continuum flux varied by a factor of ~3. Two large amplitude outbursts, of different duration, in continuum and light were observed i.e.: in October 1994 a brighter flare that lasted ~1000 days and in July 1997 another one that lasted ~700 days were detected. The response time lag of the emission lines relative to flux changes of the continuum has been found to vary with time i.e. during 1995-1997 a lag of about 100 days is evident, while during 1998-1999 a double valued lag of ~100 days and ~35 days is present in our data. The flux in the H{beta} wings and line core vary simultaneously, a behavior indicative of predominantly circular motions in the broad line region. Important changes of the H{beta} emission profiles were detected: at times, we found profiles with prominent asymmetric wings, like those normaly seen in Sy1s, while at other times, we observe profiles with weak, almost symmetrical wings, similar to those of Sy1.8s.2001A&A...376..775Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/376/775CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/376/775https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/376/775http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/376/775https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/376/775https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/376/775http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/376/775GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/A+A/376/775/table2Photometric resultsDateUT Datetime.epochnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian datedtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? rms uncertainty on Bmagmagstat.errorfloatnullableVmag? V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableRcmag? Cousins R magnitudemagphot.mag;em.opt.Rfloatnullablee_Rcmag? rms uncertainty on Rcmagmagstat.errorfloatnullableIcmag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag? rms uncertainty on Icmagmagstat.errorfloatnullableObsObservatory (1)meta.id;instr.obstycharJ/A+A/376/775/table4Log of the spectroscopic observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT Datetime.epochnullableJDJulian datedtime.epochdoubleInstrInstrumentation code (G1)meta.id;instrcharAper1Aperture (slit width)arcsecinstr.fovfloatAper2Aperture (slit length)arcsecinstr.fovfloatRange1Lower value of the spectral rangenminstr.bandwidth;stat.minfloatRange2Upper value of the spectral rangenminstr.bandwidth;stat.maxfloatResolSpectral Resolution0.1nmspect.resolutionfloatSeeing? Seeingarcsecinstr.obsty.seeingfloatnullableSeeing2? Upper value of Seeing when intervalarcsecinstr.obsty.seeingintnullableu_Seeing2[?] Uncertainty flag on Seeing and Seeing2meta.code.errorcharS/NSignal-to-noise ratio (2)stat.snrfloatn_S/N[a] a: Estimated S/N ratio in the line-free continuum (5330-5370{AA})meta.notecharJ/A+A/376/775/table5Observed H{beta} and continuum fluxesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian datedtime.epochdoubleInstrInstrumentation code (G1)meta.id;instrcharFHbetaTotal flux in H{beta} (1)1e-16W.m**-2phot.fluxfloate_FHbetarms uncertainty on FHbeta (1)1e-16W.m**-2stat.errorfloatFcContinuum flux at 5125{AA}, reduced to the 6m telescope aperture(2"x6") (2)1e-17W.m**-2.nm**-1phot.fluxfloate_FcEstimated continuum flux error (2)1e-17W.m**-2.nm**-1stat.errorfloat