J/A+A/587/L7ivo://CDS.VizieR/J/A+A/587/L7doi:10.26093/cds/vizier.35879007CDSTaddia F.Moquist P.Sollerman J.Rubin A.Leloudas G.Gal-Yam A.,Arcavi I.Cao Y.Filippenko A.V.Graham M.L.Mazzali P.A.Nugent P.E.,Pan Y.-C.Silverman J.M.Xu D.Yaron O.2017-10-11T05:12:59Z2016-07-15T13:00:51ZCDS support team

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

cds-question@unistra.frgalaxiessupernovaechemical-abundancesType IIP supernovae (SNe IIP) have recently been proposed as metallicity (Z) probes. The spectral models of Dessart et al. (2014MNRAS.440.1856D) showed that the pseudo-equivalent width of FeII {lambda}5018 (pEW_5018_) during the plateau phase depends on the primordial Z, but there was a paucity of SNe IIP exhibiting pEW_5018_ that were compatible with Z<0.4Z_{sun}_. This lack might be due to some physical property of the SN II population or to the fact that those SNe have been discovered in luminous, metal-rich targeted galaxies. Here we use SN II observations from the untargeted (intermediate) Palomar Transient Factory [(i)PTF] survey, aiming to investigate the pEW_5018_ distribution of this SN population and, in particular, to look for the presence of SNe II at lower Z. We perform pEW_5018_ measurements on the spectra of a sample of 39 (i)PTF SNe II, selected to have well-constrained explosion epochs and light-curve properties. Based on the comparison with the pEW_5018_ spectral models, we subgrouped our SNe into four Z bins from Z=~0.1 Z_{sun}_ up to Z=~2 Z_{sun}_. We also independently investigated the Z of the hosts by using their absolute magnitudes and colors and, in a few cases, using strong-line diagnostics from spectra. We searched for possible correlations between SN observables, such as their peak magnitudes and the Z inferred from pEW_5018_. We found 11 events with pEW_5018_ that were small enough to indicate Z=~0.1 Z_{sun}_. The trend of pEW_5018_ with Z matches the Z estimates obtained from the host-galaxy photometry, although the significance of the correlation is weak. We also found that SNe with brighter peak magnitudes have smaller pEW_5018_ and occur at lower Z.2016A&A...587L...7Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/587/L7CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/587/L7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/587/L7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/587/L7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/587/L7https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/587/L7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/587/L7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/587/L7/tablea1 (Log of spectral observations and pEW measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/587/L7/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/587/L7/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/587/L7/tablea1?GETtext/xml+votable180.050000true16.6798333-6.37802780.005555555555555556Cone search capability for table J/A+A/587/L7/tablea2 (Log of metallicity estimates and galaxy properties for our sample of (i)PTF SNe II)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/587/L7/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/587/L7/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/587/L7/tablea2?GETtext/xml+votable180.050000true16.67880833-6.379119440.0055555555555555566/2175 2247 2668 4716 4805 5757 5976 6000 8255 8619 9021 9396 9750 9812 10135 10378 10544 10626 10752 11111 12411 17235 17596 18020 18256 18779 18813 18913 19627 19637 19646 19986 27514 27761 28047 28173 28515 32449 36707https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/587/L7?format=asciidefaultJ/A+A/587/L7/tablea1Log of spectral observations and pEW measurementsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSN(i)PTF SN designation (YYaaa)meta.id;meta.maincharn_SN[*] Note on SN (G1)meta.notecharPhasePhase, from explosion date, and corrected for time dilationdtime.phasefloate_Phaserms uncertainty on Phasedstat.error;time.phasefloatmpEW5018Opposite of the pseudo equivalent width of FeII 5018{AA}, -pEW50180.1nmspect.line.eqWidthfloate_mpEW5018rms uncertainty on mpEW50180.1nmstat.errorfloatTelTelescope+InstrumentinstrcharObs.dateObservation datetime.epoch;obsnullable_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/A+A/587/L7/tablea2Log of metallicity estimates and galaxy properties for our sample of (i)PTF SNe IISimbadNameSimbad column added by the CDSmeta.idcharSN(i)PTF SN designation (YYaaa)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_SN[*] Note on SN (G1)meta.notecharHostHost-galaxy namemeta.id.parentcharRAJ2000? Host-galaxy right ascension (J2000)pos.eq.ra;meta.mainnullableDEJ2000? Host-galaxy declination (J2000)pos.eq.dec;meta.mainnullabledSN/Rg? Deprojected distance of each SN from its host-galaxy center (normalized by the De Vaucouleurs g-band radius of the host)pos.distancefloatnullablerMAG? Absolute r-band magnitude of the host galaxymagphys.magAbsfloatnullableg-r? g-r color index of the host galaxymagphot.color;em.opt.B;em.opt.RfloatnullableZhost1? Host Z position as measured from the luminosity-metallicity relation (LZ) (2)Sunpos.cartesian.z;pos.galacticfloatnullableZhost2? Host Z position as measured from the luminosity-color-metallicity relation (LCZ) (2)Sunpos.cartesian.z;pos.galacticfloatnullableZhost3? Host Z position as measured from the strong-line diagnostic (O3N2; Pettini & Pagel, 2004MNRAS.348L..59P) (2)Sunpos.cartesian.z;pos.galacticfloatnullableZSN1? SN Z position as measured from the luminosity-metallicity relation (LZ) (2)Sunpos.cartesian.z;pos.galacticfloatnullableZSN2? SN Z position as measured from the luminosity-color-metallicity relation (LCZ) (2)Sunpos.cartesian.z;pos.galacticfloatnullableZSN3? Host Z position as measured from the strong-line diagnostic (O3N2; Pettini & Pagel, 2004MNRAS.348L..59P) (2)Sunpos.cartesian.z;pos.galacticfloatnullable