J/ApJS/115/185ivo://CDS.VizieR/J/ApJS/115/185doi:10.26093/cds/vizier.21150185CDSDietrich M.Peterson B.M.Albrecht P.Altmann M.Barth A.J.,Bennie P.J.Bertram R.Bochkarev N.G.Bock H.Braun J.M.,Burenkov A.Collier S.Fang L.-Z.Francis O.P.Filippenko A.V.,Foltz C.B.Gaessler W.Gaskell C.M.Geffert M.Ghosh K.K.,Hilditch R.W.Honeycutt R.K.Horne K.Huchra J.P.Kaspi S.,Kuemmel M.Leighly K.M.Leonard D.C.Malkov Y.F.Mikhailov V.,Miller H.R.Morrill A.C.Noble J.O'Brien P.T.Oswalt T.D.,Pebley S.P.Pfeiffer M.Pronik V.I.Qian B.-C.Robertson J.W.,Robinson A.Rumstay K.S.Schmoll J.Sergeev S.G.Sergeeva E.A.,Shapovalova A.I.Skillman D.R.Snedden S.A.Soundararajaperumal S.,Stirpe G.M.Tao J.Turner G.W.Wagner R.M.Wagner S.J.Wei J.Y.,Wu H.Zheng W.Zou Z.L.1999-06-19T21:20:40Z1999-06-19T21:19:49ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiinfrared-photometryvisible-astronomyWide-band photometryh-alpha-photometryh-beta-photometrynarrow-band-photometryResults of a ground-based optical monitoring campaign on 3C 390.3 in 1994-1995 are presented. The broadband fluxes (B, V, R, and I), the spectrophotometric optical continuum flux F_{lambda}_(5177{AA}), and the integrated emission-line fluxes of H{alpha}, H{beta}, H{gamma}, He I 5876, and He II {lambda}4686 all show a nearly monotonic increase with episodes of milder short-term variations superposed. The amplitude of the continuum variations increases with decreasing wavelength (4400-9000{AA}). The optical continuum variations follow the variations in the ultraviolet and X-ray with time delays, measured from the centroids of the cross-correlation functions, typically around 5 days, but with uncertainties also typically around 5 days; zero time delay between the high-energy and low-energy continuum variations cannot be ruled out. The strong optical emission lines H{alpha}, H{beta}, H{gamma}, and He I {lambda}5876 respond to the high-energy continuum variations with time delays typically about 20 days, with uncertainties of about 8 days. There is some evidence that He II {lambda}4686 responds somewhat more rapidly, with a time delay of around 10 days, but again, the uncertainties are quite large (~8 days). The mean and rms spectra of the H{alpha} and H{beta} line profiles provide indications for the existence of at least three distinct components located at +/-4000 and 0km/s relative to the line peak. The emission-line profile variations are largest near line center.1998ApJS..115..185Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/115/185CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/115/185https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/115/185http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/115/185https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/115/185https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/115/185http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/115/185GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJS/115/185/hbcentH{beta} center light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hbredH{beta} red light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hablueH{alpha} blue light curveFluxFlux1e-15mW.m**-2phot.flux;em.line.HalphadoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hacentH{alpha} center light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.flux;em.line.Halphadoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/haredH{alpha} red light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.flux;em.line.Halphadoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hatotH{alpha} total light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.flux;em.line.Halphadoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hbblueH{beta} blue light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hbtotH{beta} total light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/he4686He II 4686 light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/he5876He I 5876 light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/hgammaH{gamma} light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-15mW.m**-2phot.fluxdoublee_Fluxrms uncertainty on Flux1e-15mW.m**-2stat.errorfloatJ/ApJS/115/185/c5177Continuum at 5177{AA} light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-14W.m**-2.nm**-1phot.fluxdoublee_Fluxrms uncertainty on Flux1e-14W.m**-2.nm**-1stat.errorfloatJ/ApJS/115/185/bfluxB-band photometry light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-14W.m**-2.nm**-1phot.fluxdoublee_Fluxrms uncertainty on Flux1e-14W.m**-2.nm**-1stat.errorfloatJ/ApJS/115/185/vfluxV-band photometry light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-14W.m**-2.nm**-1phot.flux.density;em.optdoublee_Fluxrms uncertainty on Flux1e-14W.m**-2.nm**-1stat.errorfloatJ/ApJS/115/185/rfluxR-band photometry light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-14W.m**-2.nm**-1phot.flux.density;em.optdoublee_Fluxrms uncertainty on Flux1e-14W.m**-2.nm**-1stat.errorfloatJ/ApJS/115/185/ifluxI-band photometry light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFluxFlux1e-14W.m**-2.nm**-1phot.flux.density;em.IRdoublee_Fluxrms uncertainty on Flux1e-14W.m**-2.nm**-1stat.errorfloat