J/MNRAS/387/344ivo://CDS.VizieR/J/MNRAS/387/344doi:10.26093/cds/vizier.73870344CDSMunari U.Henden A.Valentini M.Siviero A.Dallaporta S.Ochner P.,Tomasoni S.2024-07-06T20:16:22Z2009-09-18T17:06:41ZCDS support team

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

cds-question@unistra.frnovaecataclysmic-variable-starsinfrared-photometryvisible-astronomybroad-band-photometryThe moderately fast Nova Oph 2007 reached maximum brightness on 2007 March 28 at V=8.52, B-V=+1.12, V-Rc=+0.76, V-Ic=+1.59 and Rc-Ic=+0.83 , after fast initial rise and a pre-maximum halt lasting a week. Decline times were t^V^_2_=26.5, t^B^_2_=30, t^V^_3_=48.5 and t^B^_3_=56.5d. The distance to the nova is d=3.7+/-0.2kpc , the height above the Galactic plane is z=215pc, the reddening is E(B-V)=0.90 and the absolute magnitude at maximum is M^max^_V_=-7.2 and M^max^_B_=-7.0. The spectrum four days before maximum resembled a F6 supergiant, in an agreement with broad-band colours. It later developed into that of a standard 'FeII'-class nova. Nine days past maximum, the expansion velocity estiIIted from the width of H{alpha} emission component was ~730km/s, and the displacement from it of the principal and diffuse-enhanced absorption systems was ~650 and 1380km/s, respectively. Dust probably formed and disappeared during the period from 82 to 100d past maximum, causing (at peak dust concentration) an extinction of {Delta}B=1.8mag and an extra {Delta}E(B-V)=0.44 reddening.2008MNRAS.387..344Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/387/344CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/387/344https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/387/344http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/387/344https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/387/344https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/387/344http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/387/344GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/MNRAS/387/344/table1Photometric measurements of V2615 OphrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleVmagJohnson V magnitudemagphot.mag;em.opt.VfloatB-V? Johnson B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-Rc? Johnson-Cousins V-Rc colour indexmagphot.color;em.opt.V;em.opt.RfloatnullableRc-Ic? Cousins R-I colour indexmagphot.color;em.opt.R;em.opt.IfloatnullableV-Ic? Johnson-Cousins V-Ic colour indexmagphot.color;em.opt.V;em.opt.IfloatnullableObs[abc] Observations telescope and site (1)meta.id;instr.obstychar