J/ApJ/882/120ivo://CDS.VizieR/J/ApJ/882/120doi:10.26093/cds/vizier.18820120CDSWang X.Chen J.Wang L.Hu M.Xi G.Yang YiZhao X.Li W.2021-07-05T08:29:37Z2021-03-08T07:40:12ZCDS support team

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

cds-question@unistra.frsupernovaeline-intensitiesvisible-astronomybroad-band-photometrysurveysSNe Ia play key roles in revealing the accelerating expansion of the universe, but our knowledge of their progenitors is still very limited. Here we report the discovery of a rigid dichotomy in circumstellar (CS) environments around two subclasses of SNe Ia as defined by their distinct photospheric velocities. For the SNe Ia with high photospheric velocities (HVs), we found a significant excess flux in blue light 60-100 days past maximum, while this phenomenon is absent for SNe with normal photospheric velocity. This blue excess can be attributed to light echoes by circumstellar dust located at a distance of about (1-2)x10^17^cm from the HV subclass. Moreover, we also found that the HV SNe Ia show systematically evolving NaI absorption line by performing a systematic search of variable NaI absorption lines in spectra of all SNe Ia, whereas this evolution is rarely seen in normal ones. The evolving NaI absorption can be modeled in terms of photoionization model, with the location of the gas clouds at a distance of about 2x10^17^cm, in striking agreement with the location of CS dust inferred from B-band light-curve excess. These observations show clearly that the progenitors of HV subclass are likely from single-degenerate progenitor system (i.e., symbiotic binary), while the NV subclass may arise from double-degenerate system.2019ApJ...882..120Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/882/120CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)J/AJ/112/2408 : Light Curves of 29 SNe (Hamuy+ 1996)J/ApJ/627/579 : Photometry of variables in NGC 3370 (Riess+, 2005)J/AJ/131/527 : UBVRI light curves of 44 type Ia supernovae (Jha+, 2006)J/MNRAS/377/1531 : Opt. & infrared photometry of SN 2004eo (Pastorello+, 2007)J/AJ/135/1598 : Optical spectroscopy of type Ia supernovae (Matheson+, 2008)J/ApJ/687/1201 : SN and LGRB locations in their host galaxies (Kelly+, 2008)J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)J/ApJ/700/1097 : Light curve parameters of SN Ia (Hicken+, 2009)J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009)J/AJ/139/519 : Carnegie supernova project. SNe Ia (Contreras+, 2010)J/AJ/139/120 : Low-redshift Type-Ia supernovae (Folatelli+, 2010)J/ApJS/190/418 : Light curves for 165 SNe (Ganeshalingam+, 2010)J/PASP/122/1 : BVRI light curves of SN 2007gi (Zhang+, 2010)J/MNRAS/412/1419 : Nearby supernova rates (Leaman+, 2011)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/MNRAS/414/1617 : Classification of type Ia supernovae (Arsenijevic, 2011)J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)J/A+A/544/A81 : Supernovae and their hosts in the SDSS DR8 (Hakobyan+, 2012)J/AJ/143/126 : Spectroscopy of 462 nearby Type Ia SNe (Blondin+, 2012)J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)J/MNRAS/425/1819 : Berkeley supernova Ia program. II. (Silverman+, 2012)J/ApJ/773/53 : Type Ia SNe spectroscopy by the CSP (Folatelli+, 2013)J/other/Sci/340.170 : Classifications of 188 SNe Ia (Wang+, 2013)J/MNRAS/445/2440 : SN with associated Planck CMB temperatures (Yershov+, 2014)J/ApJ/795/142 : Defining photometric peculiar SNIa (Gonzalez-Gaitan+, 2014)J/ApJ/805/74 : SN2014J Swift/UVOT light curves (Brown+, 2015)J/ApJS/219/13 : SNe Ia light curves for the LSQ-CSP sample (Walker+, 2015)J/ApJS/220/20 : Si and Ca high-velocity features in SNe Ia (Zhao+, 2015)J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)J/AJ/154/211 : CSP (DR3): photometry of low-z SNe Ia (Krisciunas+, 2017)J/ApJ/837/120 : LOSS revisited (Graur+, 2017)J/ApJ/869/56 : Updated calibration of the CSP-I SNe Ia (Burns+, 2018)J/MNRAS/499/1424 : Properties of 407 SNe and their 394 hosts (Hakobyan+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/882/120https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/882/120http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/882/120https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/882/120https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/882/120http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/882/120GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/882/120/table1 (Classification, spectroscopic and photometric properties of the SN Ia sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/882/120/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/882/120/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/882/120/table1?GETtext/xml+votable180.050000true186.732208315.054750.0055555555555555566/248 626 697 928 1593 1701 2142 2227 2232 2251 2254 2347 2353 2379 2391 2412 2473 3393 4114 4401 4416 4447 4577 4583 4684 4719 5006 5100 5639 5680 5975 6062 6114 6178 6936 7044 7166 7241 7606 7659 7747 7923 8064 8341 8526 8927 9136 9449 9560 9640 9698 10203 10379 10563 10734 10767 10789 10817 10858 10978 11064 11138 11158 11246 11434 11496 12455 13313 13350 13399 13459 13505 13514 14882 15056 15548 16690 16852 17152 17197 17239 17340 17500 17614 17736 17741 17761 17817 17818 18017 18081 18206 18214 18296 18324 18394 18410 18535 18735 18895 19051 19062 19084 19227 19241 19283 19298 19506 19515 19581 19958 20014 20090 20140 20237 20283 20370 21041 21138 21300 21857 22826 23013 23023 23157 23193 23219 23405 23828 23916 24920 25078 25079 25141 25333 25344 25491 25513 25615 25769 25889 25960 26117 26268 26336 26392 26697 27348 27367 27426 27491 27512 27634 27761 27773 27910 27945 27947 28035 28040 28075 28089 28167 28249 28299 28353 28356 28368 28453 30044 31218 31230 31628 32129 32136 32340 32561 32569 32602 32620 36045 36131 36287 36473 36805 36919 37299 37668 39627 39677 39836 39863 40337 40379 43877 44000 44359 44660 44915 48665https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/882/120?format=asciiOpticaldefaultJ/ApJ/882/120/table1Classification, spectroscopic and photometric properties of the SN Ia samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[1/3] Group code (1)meta.codeintNameSN namemeta.id;meta.maincharTypeSN subtype (2)src.classcharvSiII[0.7/1.7] Ejecta velocity; SiII 6355{AA} absorption (3)10000km.s**-1phys.velocfloate_vSiII[2/10] The 1sigma uncertainty in vSiII100km.s**-1stat.errorintDelm15B[0.6/2.1] B band magnitude 15 days from maximummagphot.mag;arith.diff;em.opt.Bfloate_Delm15B[2/18] The 1sigma uncertainty in Delm15B0.01magstat.errorint(B-V)max[-0.1/1.5] The (B-V) color at maximum lightmagphot.color;em.opt.B;em.opt.Vfloate_(B-V)max[2/10] The 1sigma uncertainty in (B-V)max0.01magstat.errorintl_EWLimit flag on EWmeta.code.error;spect.line.eqWidthcharEW[0/5.5]? Weighted equivalent width (4)0.1nmspect.line.eqWidthfloatnullablee_EW[5/53]? The 1sigma uncertainty in EW0.001nmstat.error;spect.line.eqWidthintnullableDelm60B[2.9/4]? B band magnitude 60 days from B maximummagphot.mag;arith.diff;em.opt.Bfloatnullablee_Delm60B[2/34]? The 1sigma uncertainty in Delm60Bmagstat.errorintnullableDelm60V[2.1/3.3]? V band magnitude 60 days from B maximummagphot.mag;arith.diff;em.opt.Vfloatnullablee_Delm60V[2/29]? The 1sigma uncertainty in Delm60Vmagstat.errorintnullableRefReference code(s) (5)meta.notecharSNCatDisplay data from Blondin+, 2012, J/AJ/143/126 ; Folatelli+, 2013, J/ApJ/773/53 ; Ganeshalingam+, 2010, J/ApJS/190/418 ; Wang+, 2009, J/ApJ/699/L139 and Folatelli+, 2013, J/ApJ/773/53 within 3"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED 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.main