J/MNRAS/438/1391ivo://CDS.VizieR/J/MNRAS/438/1391doi:10.26093/cds/vizier.74381391CDSPan Y.-C.Sullivan M.Maguire K.Hook I.M.Nugent P.E.Howell D.A.,Arcavi I.Botyanszki J.Cenko S.B.Derose J.Fakhouri H.K.Gal-Yam A.,Hsiao E.Kulkarni S.R.Laher R.R.Lidman C.Nordin J.Walker E.S.,Xu D.2024-08-07T20:12:55Z2015-02-19T14:26:59ZCDS support team

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

cds-question@unistra.frsupernovaeWe present spectroscopic observations of the host galaxies of 82 low-redshift Type Ia supernovae (SNe Ia) discovered by the Palomar Transient Factory. We determine star formation rates, gas-phase/stellar metallicities, and stellar masses and ages of these objects. As expected, strong correlations between the SN Ia light-curve width (stretch) and the host age/mass/metallicity are found: fainter, faster declining events tend to be hosted by older/massive/metal-rich galaxies. There is some evidence that redder SNe Ia explode in higher metallicity galaxies, but we found no relation between the SN colour and host galaxy extinction based on the Balmer decrement, suggesting that the colour variation of these SNe does not primarily arise from this source. SNe Ia in higher mass/metallicity galaxies also appear brighter after stretch/colour corrections than their counterparts in lower mass hosts, and the stronger correlation is with gas-phase metallicity suggesting this may be the more important variable. We also compared the host stellar mass distribution to that in galaxy-targeted SN surveys and the high-redshift untargeted Supernova Legacy Survey (SNLS). SNLS has many more low-mass galaxies, while the targeted searches have fewer. This can be explained by an evolution in the galaxy stellar mass function, coupled with an SN delay-time distribution proportional to t^-1^. Finally, we found no significant difference in the mass-metallicity relation of our SN Ia hosts compared to field galaxies, suggesting any metallicity effect on the SN Ia rate is small.2014MNRAS.438.1391Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/438/1391CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch 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/MNRAS/438/1391https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/438/1391http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/438/1391https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/438/1391https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/438/1391http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/438/1391GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/438/1391/sample (SN (table3) and host (table4) photometric properties, and spectrosocopic properties (table5))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/438/1391/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/438/1391/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/438/1391/sample?GETtext/xml+votable180.050000true341.72062521.63930560.005555555555555556Cone search capability for table J/MNRAS/438/1391/table2 (The observing log of full sample used in this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/438/1391/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/438/1391/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/438/1391/table2?GETtext/xml+votable180.050000true341.72062521.63930560.0055555555555555566/191 634 719 979 1158 2254 2509 2564 4577 5130 5236 6005 6014 6606 8566 9276 9510 9531 9533 9619 9631 9958 10038 10118 10218 10838 10845 10921 11218 11287 11294 11300 11345 12379-12380 12567 13452 13521 13572 13576 13601 17237 17239 17525 17782 17829 18000 18006 18301 18538 18933 18959 18979 19052 19079 19136 19187 19228 19244 19450 19624 19777 19970 19984 19991-19992 20126 20152 20230 20291 20332 20357 20364 26117 26563 27929 28455 31378 31685 32505 32681 49114https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/438/1391?format=asciiOpticaldefaultJ/MNRAS/438/1391/sampleSN (table3) and host (table4) photometric properties, and spectrosocopic properties (table5)SNSN namemeta.id;meta.maincharprimarys? Stretch parameter (2)stat.fit.paramfloatnullablee_s? rms uncertainty on sstat.errorfloatnullableLCSource of light curve (1)meta.bibcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintcol? B-V colour at B-band maximum light (2)magstat.fit.paramfloatnullablee_col? rms uncertainty on Cmagstat.errorfloatnullableBmag? B magnitude (2)magphot.mag;em.opt.Bfloatnullablee_Bmag? rms uncertainty on Bmagmagstat.error;phot.mag;em.opt.Bfloatnullableb_M*? Lower value of stellar mass intervalsolMassphys.mass;stat.minfloatnullableM*Stellar mass (3)solMassphys.massfloatB_M*? Upper value of stellar mass intervalsolMassphys.mass;stat.maxfloatnullableb_logSFRp? Lower value of star formation ratelog(solMass.yr**-1)phys.SFR;stat.minfloatnullablelogSFRp? Photometric star formation rate (3)log(solMass.yr**-1)meta.idfloatnullableB_logSFRp? Upper value of star formation ratelog(solMass.yr**-1)phys.SFR;stat.maxfloatnullableNsNumber of spectroscopic observationsmeta.ref.urlintnullablee(O)? Abundance, 12+log(O/H) (4)phys.abundfloatnullablee_e(O)? rms uncertainty on 12+log(O/H)stat.errorfloatnullablel_logSFRsLimit flag on logSFRsmeta.code.errorcharlogSFRsSpectroscopic star formation rate (4)log(solMass.yr**-1)meta.idfloate_logSFRs? rms uncertainty on logSFRslog(solMass.yr**-1)stat.errorfloatnullable[M/H]? Metallicity (4)log(Sun)phys.abund.ZfloatnullablelogAge? Age (4)log(Gyr)time.agefloatnullableAGN[0/1] AGN tag for the host galaxy: 0=normal galaxy, 1=AGN hostmeta.codeint_RAPosition (from table2) (right ascension part)degpos.eq.ra;meta.main_DEPosition (from table2) (declination part)degpos.eq.dec;meta.mainJ/MNRAS/438/1391/table2The observing log of full sample used in this paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNSN namemeta.id;meta.maincharn_SN[c] c: 'Galaxy Zoo Supernovae project' discovered SNemeta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainInstTelescope and instrumentinstrchartexp.rExposure time for red gratings/grismsstime.duration;obs.exposureinttexp.bExposure time for blue gratings/grismsstime.duration;obs.exposureintzh[0.008/0.09] Heliocentric redshiftsrc.redshiftfloatzCMBRedshift based on CMB framesrc.redshiftfloatS/NSignal-to-noise ratiostat.snrint