J/ApJ/930/70ivo://CDS.VizieR/J/ApJ/930/70doi:10.26093/cds/vizier.19300070CDSHu L.Chen X.Wang L.2024-11-06T20:25:31Z2024-04-26T14:47:22ZCDS support team

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

cds-question@unistra.frsupernovaeredshiftedvisible-astronomyspectroscopyastronomical-reference-materialsWe present a data-driven method based on long short-term memory (LSTM) neural networks to analyze spectral time series of Type Ia supernovae (SNeIa). The data set includes 3091 spectra from 361 individual SNeIa. The method allows for accurate reconstruction of the spectral sequence of an SN Ia based on a single observed spectrum around maximum light. The precision of the spectral reconstruction increases with more spectral time coverages, but the significant benefit of multiple epoch data at around optical maximum is only evident for observations separated by more than a week. The method shows great power in extracting the spectral information of SNe Ia and suggests that the most critical information of an SN Ia can be derived from a single spectrum around the optical maximum. The algorithm we have developed is important for the planning of spectroscopic follow-up observations of future SN surveys with the LSST/Rubin and WFIRST/Roman telescopes.2022ApJ...930...70Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/930/70CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)J/AJ/131/1648 : Type Ia SNe at high and low redshifts (Blondin+, 2006)J/AJ/131/527 : UBVRI light curves of 44 type Ia supernovae (Jha+, 2006)J/ApJ/659/122 : Improved distances to type Ia supernovae (Jha+, 2007)J/ApJ/686/749 : Improved cosmological constraints from SNe (Kowalski+, 2008)J/A+A/500/L17 : Spectral flux ratio of SN Ia (Bailey+, 2009)J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)J/ApJS/183/109 : Cepheids in 3 host galaxies (Riess+, 2009)J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009)J/ApJ/716/712 : HST light curves of six SNe and Union2 (Amanullah+, 2010)J/MNRAS/406/782 : Type Ia supernovae luminosities (Sullivan+, 2010)J/A+A/529/L4 : Reddening law of type Ia supernovae (Chotard+, 2011)J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)J/AJ/143/126 : Spectroscopy of nearby Type Ia supernovae (Blondin+, 2012)J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)J/MNRAS/425/1789 : Berkeley supernova Ia program. I. (Silverman+, 2012)J/ApJ/746/85 : THe HST Cluster Supernova Survey. V. (Suzuki+, 2012)J/ApJ/773/53 : Type Ia SNe spectroscopy by the CSP (Folatelli+, 2013)J/MNRAS/433/2240 : SALT2 parameters & distances for SNe (Ganeshalingam+, 2013)J/other/Sci/340.170 : Classifications of 188 SNe Ia (Wang+, 2013)J/A+A/568/A22 : Joint analysis of the SDSS-II & SNLS SNe Ia (Betoule+, 2014)J/ApJ/795/142 : Defining phot. peculiar SNe Ia (Gonzalez-Gaitan+, 2014)J/A+A/561/A146 : SN 2010ae optical spectra (Stritzinger+, 2014)J/ApJ/815/58 : Spectrophot. time series obs. of twin SNIa (Fakhouri+, 2015)J/MNRAS/446/3895 : The rising light curves of Type Ia supernovae (Firth+, 2015)J/ApJS/220/9 : CfAIR2: NIR light curves of Type Ia SNe (Friedman+, 2015)J/MNRAS/452/4307 : From optical to IR photometry of SN 2013dy (Pan+, 2015)J/ApJ/813/30 : UV-Opt light curves of the SNIa iPTF14bdn (Smitka+, 2015)J/A+A/573/A2 : SN 2012Z spectra (Stritzinger+, 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/826/144 : Follow-up observations of SNIa ASASSN-14lp (Shappee+, 2016)J/AJ/154/211 : CSP (DR3): photometry of low-z SNe Ia (Krisciunas+, 2017)J/A+A/611/A58 : SN 2007on and SN 2011iv light curves (Gall+, 2018)J/ApJ/869/167 : Improved empirical models for Type Ia SNe (Saunders+, 2018)J/ApJ/859/101 : The supernovae Ia Pantheon sample (Scolnic+, 2018)J/ApJ/863/90 : Optical and NIR LCs of the nearby SN 2017cbv (Wee+, 2018)J/AJ/155/201 : SweetSpot DR1: SNeIa with WIYN+WHIRC (Weyant+, 2018)J/ApJ/870/L1 : K2 obs. of type Ia supernova SN 2018oh (Dimitriadis+, 2019)J/ApJ/885/85 : Automated DASH classif. for supernovae (Muthukrishna+, 2019)J/ApJ/870/13 : K2 LC alternative analysis of ASASSN-18bt (Shappee+, 2019)J/MNRAS/486/5785 : Type Ia supernova (Siebert+, 2019)J/A+A/636/A46 : The SUGAR model. Training dataset (Leget+, 2020)J/PASJ/72/89 : Hyper Suprime-Cam transients classif. (Takahashi+, 2020)J/ApJ/905/94 : Classif. for PS1-MDS SNe with SuperRAENN (Villar+, 2020)J/ApJ/904/14 : Optical and NIR observation of SN (Ia) 2017cbv (Wang+, 2020)J/ApJ/902/46 : LCO network light curves of SN Ia 2018gv (Yang+, 2020)J/ApJ/923/L8 : Follow-up phot. & sp. of SNIa 2020hvf (Jiang+, 2021)J/ApJ/923/167 : SN 2018agk spectra and NIR-UV light curves (Wang+, 2021)J/ApJ/924/35 : Optical spectra of type Ia SN 2015bq (Li+, 2022)http://www.wiserep.org/ : WISeREP home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/930/70https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/930/70http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/930/70https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/930/70https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/930/70http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/930/70GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/930/70/table1 (Supernovae in the spectral dataset)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/930/70/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/930/70/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/930/70/table1?GETtext/xml+votable180.050000true53.3999583-36.12713890.0055555555555555566/34 224 248 626 697 928 1527 1677 1701 1796 2038 2142 2169 2227 2232 2251 2254 2265 2347 2353 2379 2391 2412 2473 2627 2641 3393 3415 4114 4401 4416 4447 4577 4583 4684 4719 4807 4935 4993 5006 5095 5100 5115 5139 5342 5632 5639 5680 5905 5975 6062 6101 6114 6178 6549 6877 6936 6962 6968 7044 7104 7166 7198 7241 7369 7488 7606 7659 7747 7783 7923 8064 8196 8213 8267 8341 8435 8479 8522 8526 8556 8763 8927 9136 9287 9449 9533 9560 9614 9640 9751 9794 10203 10206 10232 10379 10397 10428 10438 10454 10563 10650 10734 10767 10789 10817 10827 10858 11064 11158 11246 11392 11434 11496 11672 11693 11713 11886 12103 12455 12585 13313 13350 13399 13427 13459 13505 13514 13536 13907 14009 14733 14834 14882 14907 15056 15085 15548 15954-15955 16612 16690 17197 17239 17278 17340 17401 17500 17614 17670 17736 17741 17817 17828 17840 18016-18017 18061 18081 18206 18214 18296 18325 18394 18535 18735 18753 18851 18895 18929 18939 19051 19084 19087 19094 19102 19185 19227 19241 19283 19298 19321 19506 19515 19551 19554 19560 19581 19729 19777 19958 20014 20046 20090 20140 20237 20279 20283 20370 20372 20374 21010 21041 21109 21138 21207 21300 21857 22425 22826 22943 23013 23023 23028 23157 23179 23193 23219 23294 23405 23828 23916 24131 24920 25078-25079 25141 25333 25344 25439 25491 25513 25520 25615 25769-25770 25850 25889 25960 25982 26117 26175 26268 26271 26309 26336 26392 26395 26500 26563 26575 26697 27174 27348 27367 27426 27491 27512 27564 27634 27728 27738 27761 27773 27910 27914 27945 28035 28040 28075 28089 28112 28249 28294 28353 28356 28368 28453 28498 28572 28593 30044 31218 31230 31293 31313 31628 32129 32136 32187 32340 32561 32569 32602 32620 33228 34361 34493 34531 34534 34540 36045 36131 36201 36287 36412 36473 36645 36662 36682 36805 36919 37299 37429 37668 38664 38956 38985 39627 39677 39836 39863 40252 40294 40337 40379 40599 40906 43339 43874 43877 44000 44026 44359 44660 44915 45036 45041 46882 48075 48459 48625 48676 48898 49129https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/930/70?format=asciiOpticaldefaultJ/ApJ/930/70/table1Supernovae in the spectral datasetSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN identifiermeta.id;meta.maincharsTypeSN subtype ("Ia-norm": 302 sources; "Ia-91bg": 27 sources; "Ia-91T": 12 sources; "Ia-99aa": 10 sources and "Iax": 10 sources)src.classcharz[0.0006/0.1] Spectroscopic redshiftsrc.redshiftdoubleNsp[2/74] Number of spectra usedmeta.numberintStart[-14.87/26.42] Day of first epoch observationdtime.epochfloatEnd[-8.36/32.98] Day of last epoch observationdtime.epochfloatSourceSpectrum source ("Kaepora", "WISeREP" or "VLT")meta.bibcharr_z[1/20] Reference code for z (see refs.dat file)meta.ref;pos.frameintMaxRef[2/58] Modified Julian Date of maximum reference code (see refs.dat file)meta.bibintPhotRefPhotometry reference code(s) (see refs.dat file)pos.framecharKaeporaDisplay data from Siebert+ 2019, J/MNRAS/486/5785meta.ref.urlintnullable_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/930/70/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintAuthFirst author's name(s)meta.bib.authorcharBibCodeBibcode of the referencemeta.bib.bibcodecharCommCommentmeta.notechar