J/ApJ/692/L84ivo://CDS.VizieR/J/ApJ/692/L84doi:10.26093/cds/vizier.16929084CDSMalesani D.Fynbo J.P.U.Hjorth J.Leloudas G.Sollerman J.,Stritzinger M.D.Vreeswijk P.M.Watson D.J.Gorosabel J.,Michalowski M.J.Thone C.C.Augusteijn T.Bersier D.Jakobsson P.,Jaunsen A.O.Ledoux C.Levan A.J.Milvang-Jensen B.Rol E.,Tanvir N.R.Wiersema K.Xu D.Albert L.Bayliss M.Gall C.,Grove L.F.Koester B.P.Leitet E.Pursimo T.Skillen I.2017-06-30T05:49:23Z2011-03-14T12:22:39ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometryOn 2008 January 9.56 UT, SN 2008D was discovered while following up an unusually bright X-ray transient (XT) in the nearby spiral galaxy NGC 2770. We present early optical spectra (obtained 1.75 days after the XT) which allowed the first identification of the object as a supernova (SN) at redshift z=0.007. These spectra were acquired during the initial declining phase of the light curve, likely produced in the stellar envelope cooling after shock breakout, and rarely observed. They exhibit a rather flat spectral energy distribution with broad undulations, and a strong, W-shaped feature with minima at 3980 and 4190{AA} (rest frame). We also present extensive spectroscopy and photometry of the SN during the subsequent photospheric phase. Unlike SNe associated with gamma-ray bursts, SN 2008D displayed prominent He features and is therefore of Type Ib.2009ApJ...692L..84Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/692/L84CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/692/L84https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/692/L84http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/692/L84https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/692/L84https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/692/L84http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/692/L84GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/692/L84/table2Log of optical and near-infrared imaging observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochMean epoch of observation (UT)stime.epochnullableAgeTime since the X-ray outburst; Jan 9, 13:32:49 UTdtime.agedoubleFilt[UBVRIJHK] Filter used in observationinstr.setup;obscharmagObserved apparent magnitude in Filt (1)magphot.magfloate_magError in magmagstat.error;phot.magfloatInstTelescope and instrumentinstrchar