J/ApJ/827/90ivo://CDS.VizieR/J/ApJ/827/90doi:10.26093/cds/vizier.18270090CDSLiu Y.-Q.Modjaz M.Bianco F.B.Graur O.2017-06-27T06:38:17Z2017-01-04T09:04:53ZCDS support team

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

cds-question@unistra.frsupernovaespectroscopyline-intensitiesUsing the largest spectroscopic data set of stripped-envelope core-collapse supernovae (stripped SNe), we present a systematic investigation of spectral properties of Type IIb SNe (SNe IIb), Type Ib SNe (SNe Ib), and Type Ic SNe (SNe Ic). Prior studies have been based on individual objects or small samples. Here, we analyze 242 spectra of 14 SNe IIb, 262 spectra of 21 SNe Ib, and 207 spectra of 17 SNe Ic based on the stripped SN data set of Modjaz et al. (2016ApJ...832..108M) and other published spectra of individual SNe. Each SN in our sample has a secure spectroscopic ID, a date of V-band maximum light, and most have multiple spectra at different phases. We analyze these spectra as a function of subtype and phase in order to improve the SN identification scheme and constrain the progenitors of different kinds of stripped SNe. By comparing spectra of SNe IIb with those of SNe Ib, we find that the strength of H{alpha} can be used to quantitatively differentiate between these two subtypes at all epochs. Moreover, we find a continuum in observational properties between SNe IIb and Ib. We address the question of hidden He in SNe Ic by comparing our observations with predictions from various models that either include hidden He or in which He has been burnt. Our results favor the He-free progenitor models for SNe Ic. Finally, we construct continuum-divided average spectra as a function of subtype and phase to quantify the spectral diversity of the different types of stripped SNe.2016ApJ...827...90Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/827/90CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)J/ApJ/825/L22 : BVRI LCs of type Ib supernova iPTF13bvn (Folatelli+, 2016)J/A+A/593/A68 : PTF12os & iPTF13bvn spectra & light curves (Fremling+, 2016)J/A+A/574/A60 : Light curve templates of SNe Ib/c from SDSS (Taddia+, 2015)J/A+A/573/A12 : SN1993J spectra 100-500d post-explosion (Jerkstrand+, 2015)J/ApJS/213/19 : Optical and near-IR light curves of 64 SNe (Bianco+, 2014)J/AJ/147/99 : Spectrosc. of 73 stripped core-collapse SNe (Modjaz+, 2014)J/A+A/562/A17 : SN 2011dh - The first 100 days (Ergon+, 2014)J/MNRAS/436/774 : Core collapse supernovae (type Ibc) (Eldridge+, 2013)J/MNRAS/431/308 : SN 2011fu BVRI light curves (Kumar+, 2013)J/MNRAS/430/1746 : 90 new SNIa from SDSS DR7 (Graur+, 2013)J/other/PZ/32.6 : UBVRI light curves of SN 2011dh (Tsvetkov+, 2012)J/MNRAS/425/1819 : Berkeley supernova Ia program. II. (Silverman+, 2012)J/ApJ/742/L18 : Follow-up photom. of the SN IIb PTF 11eon (Arcavi+, 2011)J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)J/MNRAS/416/3138 : SN 2009jf light curves (Valenti+, 2011)J/MNRAS/408/827 : Simulations of supernova explosions (Dessart+, 2010)J/ApJ/702/226 : Swift/UVOT panchromatic obs. of SN 2008D (Modjaz+, 2009)J/ApJ/692/L84 : Photometry of SN 2008D (Malesani+, 2009)J/ApJ/687/1201 : SN and LGRB locations in their host galaxies (Kelly+, 2008)J/MNRAS/389/955 : u'BVg'r'i'z' light curves of SN 2008ax (Pastorello+, 2008)J/AJ/131/1648 : Type Ia supernovae at high and low redshifts (Blondin+, 2006)http://www.cfa.harvard.edu/supernova/SNarchive.html : CfA SN Archivehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/827/90https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/827/90http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/827/90https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/827/90https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/827/90http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/827/90GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/827/90/sne (Spectral sample of SNe IIb, SNe Ib and SNe Ic)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/827/90/sne?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/827/90/sne?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/827/90/sne?GETtext/xml+votable180.050000true148.853228169.02047310.0055555555555555566/2370 2372 2395 2452 2530 4472 5061 5203 6805 7173 7606 8195 10070 10380 10892 10905 11027 13707 16120 17727 18101 18809 19035 19661 19954 20000 21127 21198 23815 24027 25344 25788 26872 27741 28112 28464 30970 34531 34701 36081 36769 36793 38956 40210 43712 43881 46395 46882 48270https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/827/90?format=asciiOpticaldefaultJ/ApJ/827/90/table3Measured absorption velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSupernova identifiermeta.id;meta.maincharTypeSupernova typesrc.spTypecharPhasePhase (1)dtime.phasefloatVHeI5[-17400/-4360]? He I 5876A velocity (2)km/sspect.dopplerVelocintnullablee_VHeI5? Uncertainty in VHeI5km/sstat.errorfloatnullableVHeI6[-20200/-2540]? He I 6678A velocity (2)km/sspect.dopplerVelocintnullablee_VHeI6? Uncertainty in VHeI6km/sstat.errorfloatnullableVHeI7[-13500/-5550]? He I 7065A velocity (2)km/sspect.dopplerVelocintnullablee_VHeI7? Uncertainty in VHeI7km/sstat.errorintnullableVHa[-32500/-2560]? H{alpha} velocity (2)km/sspect.dopplerVelocintnullablee_VHa? Uncertainty in VHakm/sstat.errorfloatnullableVFeII[-21111/-2820]? Fe II 5169A velocity (2)km/sspect.dopplerVelocintnullablee_VFeII? Uncertainty in VFeIIkm/sstat.errorfloatnullableVOI[-11000/-4440]? O I 7774A velocity (2)km/sspect.dopplerVelocintnullablee_VOI? Uncertainty in VOIkm/sstat.errorfloatnullableJ/ApJ/827/90/sneSpectral sample of SNe IIb, SNe Ib and SNe IcIDSN Name (SN YYYYaa, iPTF13bvn or PTF12gzk)meta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeSimbad column added by the CDSsrc.spTypecharNvNumber of measured absorption velocities for this SNmeta.numberintnullablef_IDFlag on ID (1)meta.codecharNwNumber of measured pEW values for this SNmeta.numberintnullablePhasesPhases (2)time.phasecharRefReference(s) (see refs.dat file)meta.ref;pos.framecharz? Redshift (only for Modjaz+, 2016ApJ...832..108M)src.redshiftfloatnullableSNcatDisplay data from Modjaz+, 2014, J/AJ/147/99; Drout+, 2011, J/ApJ/741/97 and Bianco+, 2014, J/ApJS/213/19, within 2"meta.ref.urlintnullableVPInteractive plot of velocitiesmeta.ref.urlcharpEWPInteractive plot of pseudo equivalent-widths (pEWs)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/827/90/table4Measured "pseudo EW" (pEW) values (see section 3.2)PhasePhase (1)dtime.phasefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSupernova identifiermeta.id;meta.maincharTypeSupernova typesrc.spTypecharEWHeI5[15/166]? He I 5876A equivalent width (2)0.1nmspect.line.eqWidthintnullablee_EWHeI5? Uncertainty in EWHeI5 (2)0.1nmstat.errorintnullableEWHeI6[1/75]? He I 6678A equivalent width (2)0.1nmspect.line.eqWidthintnullablee_EWHeI6? Uncertainty in EWHeI6 (2)0.1nmstat.errorintnullableEWHeI7[16/148]? He I 7065A equivalent width (2)0.1nmspect.line.eqWidthintnullablee_EWHeI7? Uncertainty in EWHeI7 (2)0.1nmstat.errorintnullableEWHa[8/216]? H{alpha} equivalent width (2)0.1nmspect.line.eqWidthintnullablee_EWHa? Uncertainty in EWHa (2)0.1nmstat.errorintnullableEWOI[9/153]? O I 7774A equivalent width (2)0.1nmspect.line.eqWidthintnullablee_EWOI? Uncertainty in EWOI (2)0.1nmstat.errorintnullableJ/ApJ/827/90/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibcodemeta.bib.bibcodecharAuthFirst author's name(s)meta.bib.authorcharCommCommentmeta.notechar