J/MNRAS/510/2228ivo://CDS.VizieR/J/MNRAS/510/2228doi:10.26093/cds/vizier.75102228CDSDhawan S.Goobar A.Smith M.Johansson J.Rigault M.Nordin J.,Biswas R.Goldstein D.Nugent P.Kim Y.-L.Miller A.A.Graham M.J.,Medford M.Kasliwal M.M.Kulkarni S.R.Duev D.A.Bellm E.Rosnet P.,Riddle R.Sollerman J.2025-03-07T20:14:15Z2024-11-18T15:42:18ZCDS support team

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

cds-question@unistra.frgalaxiessupernovaetransient-sourcessurveysvisible-astronomyinfrared-astronomyspectroscopyphotometryastrometryredshiftedstellar-spectral-typesType Ia supernovae (SNe Ia) in the nearby Hubble flow are excellent distance indicators in cosmology. The Zwicky Transient Facility (ZTF) has observed a large sample of SNe from an untargeted, rolling survey, reaching 20.8, 20.6, and 20.3 mag in g r, and i band, respectively. With an FoV of 47 deg^2^, ZTF discovered > 3000 SNe Ia in a little over 2.5 yr. Here, we report on the sample of 761 spectroscopically classified SNe Ia from the first year of operations (DR1). The sample has a median redshift z_med_ = 0.057, nearly a factor of 2 higher than the current low-z sample. Our sample has a total of 934 spectra, of which 632 were obtained with the robotic SEDm on Palomar P60. We assess the potential for precision cosmology for a total of 305 SNe with redshifts from host galaxy spectra. The sample is already comparable in size to the entire combined literature low-z anchor sample. The median first detection is 13.5 d before maximum light, about 10 d earlier than the median in the literature. Furthermore, six SNe from our sample are at D_L_ < 80 Mpc, for which host galaxy distances can be obtained in the JWST era, such that we have calibrator and Hubble flow SNe observed with the same instrument. In the entire duration of ZTF-I, we have observed nearly 50 SNe for which we can obtain calibrator distances, key for per cent level distance scale measurements.2022MNRAS.510.2228Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/510/2228CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16)J/ApJ/895/32 : Zwicky Transient Facility BTS. I. (Fremling+, 2020)J/ApJ/886/152 : ZTF early observations of Type Ia SNe. I. LCs (Yao+, 2019)J/ApJ/859/101 : The supernovae Ia Pantheon sample (Scolnic+, 2018)https://github.com/ZwickyTransientFacility/ztfcosmodr : Data used in this studyhttps://ned.ipac.caltech.edu/ : NED databasehttps://github.com/zuds-survey/zuds-pipeline : Photometry pipeline for LCshttps://sncosmo.readthedocs.io/en/v2.1.x/ : Python SNe tools libraryhttps://github.com/astrobarn/spextractor : Spectroscopic gaussian fitting codehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/510/2228https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/510/2228http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/510/2228https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/510/2228https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/510/2228http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/510/2228GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/510/2228/table1 (The SNe Ia in the complete Year 1 sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/510/2228/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/510/2228/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/510/2228/table1?GETtext/xml+votable180.050000true26.798718.79860.005555555555555556Cone search capability for table J/MNRAS/510/2228/table2 (*Heliocentric frame redshift for our SN Ia host galaxy sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/510/2228/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/510/2228/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/510/2228/table2?GETtext/xml+votable180.050000true175.59870810.2640830.005555555555555556Cone search capability for table J/MNRAS/510/2228/table2b (The light curves of SNe Ia in the complete Year 1 sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/510/2228/table2b?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/510/2228/table2b?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/510/2228/table2b?GETtext/xml+votable180.050000true26.798718.79860.0055555555555555566/106 171 206 235 387 434 492 529 549 566 628 640 662 676 731 737 772 832 911 1672 1685 1704 1819 2058 2101 2171 2185 2204 2282 2308 2372 2384 2396 2469 2530 2615 2618 2692 2811 2956 3074 3565 3941 3954 4175 4180 4251 4269 4287 4294 4363 4375-4376 4400 4452 4484 4551 4567 4580 4600 4624 4650 4698 4703 4759 4789 4829 4855 4873 4928 4938 4959 4988 4992 5003 5006 5042 5084 5104 5120 5186 5190 5204 5267 5310 5337 5351 5363 5367 5392 5396 5410 5421 5438 5541 5572 5575 5591 5622 5700-5701 5726 5743 5758 5894-5895 5903 5920 5923 5943 6001 6007-6008 6013 6062 6087 6091 6104 6116 6125 6131 6176 6234 6265 6275 6331 6382-6383 6436 6457 6476 6479 6558 6581 6617 6647 6659 6739 6779 6840 6852 6942 6991 7010 7013 7020 7051 7065 7124 7233 7247 7355 7485 7537 7678 7687 7959 8050 8079 8203 8231 8242 8257 8269 8280 8291 8332 8345 8352 8431 8454 8512 8537 8539 8550 8557 8576 8580 8657-8658 8674 8703 8758 8767 8773 8778 8785 8789 8814 8908 8957 8996 9004-9005 9020 9029 9037 9052 9067 9071-9072 9114 9117 9170 9178 9182 9194 9204-9205 9212 9218 9223 9239 9243 9247 9255 9268 9282 9307 9326 9334 9361 9386-9387 9424 9430 9452 9454 9470 9487 9489 9491 9512 9516 9520 9540 9543 9557 9564-9565 9608 9619 9639 9644 9646 9678 9693 9706 9726 9747 9749 9759 9768 9776 9788 9793 9808 9811-9812 9824 9835 9840-9841 9878 9889 9925 9971 9984 10000 10004 10044 10060 10070 10074-10075 10092 10112 10115 10120 10124 10154 10159 10175 10187 10200 10202 10210 10233 10253 10280 10306 10312 10322 10334 10337 10339 10349-10350 10360 10378 10384 10386 10409 10450 10452 10514 10523 10568 10576 10595 10611 10619-10620 10637 10665 10673-10674 10693 10710 10717 10728 10775 10789 10794 10811 10827 10873 10890 10913 10932 10944 10981 11012 11020 11044 11046 11062 11098 11109 11170 11186 11198-11199 11204 11220 11222-11223 11243 11267 11269 11273 11297 11305 11326 11333 11374 11385 11409 11415 11433 11435 11441 11451 11453 11505 11514 11534 11548 11551 11584 11595 11614-11615 11619 11626 11643 11649 11668 11670 11685 11709 11778 11795-11796 11801 11820 11822 11848 11855 11925 11960 11971 12037 12041 12118 12124 12126 12172 12181 12194 12199 12210 12370 12394 12410 12475 12477 12506 12567 12642 12646 12673 12714 12730 12744 12770 12776 12797 13021 13248 13317 13326 13495 13598 13607 13631 13695 13738 13832 13891 13944 14020 14069 14507 14526 14583 14591 14858 14874 14896 14913 14958 14973 14984 14996 15007 15013 15018 15050 15054 15068 15070 15161 15235 15244 15257-15258 15270-15271 15299 15308 15338-15339 15349 15543 15558 15917 15932 15970 15977 15979 16012 16029 16060 16074 16079 16097 16102 16141 16293 16582 16703 16733 16765 16791 16793 16885 16915 16960 16964 17017 17083 17219 17236 17238 17356 17374 17381 17384 17411 17434 17443 17495 17528 17531 17573 17576 17589 17595 17624 17697 17725 17742 17787 17810 17846 17941 17944 17951 17956 17966 18009 18014 18019 18066 18073 18109 18119 18160 18168 18194 18241 18264 18273 18333 18354 18396 18409 18420 18678 18717 18812 18843 18901 18921-18922 18971 18986 19129 19189 19224 19260 19312 19339 19346 19362 19367 19373 19379 19423 19447 19495 19499 19548 19550 19593 19625 19682 19690 19729 19761 19822 19824 19929 19970 20035 20083 20089 20142 20171 20193 20219 20223 20298 20309 20362 20385 20423 20436 21170 21377 21723 21791 21942 22342 22475 22493 22525 22588 22594 22701 22711 22735 22775 22829 23052 23184 23197 23229 23496 23602 23777 23891 24053 24166 24235 25700 25726 26078 26353 26366 26551 26559 26580 26582 26748 26897 26995 27082 27171 27176 27262 27395 27526 27549 27620 27629 27634 27662 27716 27752 27801 27803 27805 27847 27865 28004 28014 28019 28035 28069 28075 28092 28108 28127 28236 28273 28307 28313 28336 28348 28368 28406 28423 28445 28454 28458 28460 28476 28483 28490 28563 28581 28607 28612 28623 28642 28657 28661-28662 28664 30063 30122 31351 31406 31513 31515 31604 31643 31656 31674 31914 32380 32401 32422 32447 32451 32456 32467 32479 32486 32498 32513 32520 32539 32565 32588 32614 32670 32680 32739 32767 36229 36249 36252 36265 36276 36515 36535 36567 36589 36597 36632 36656 36761 36763 36780 40307 40351 40360 40868 40947 48315 48358 48731 48944 490944.0234554602041486e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/510/2228?format=asciiOpticalInfrareddefaultJ/MNRAS/510/2228/table1The SNe Ia in the complete Year 1 samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSNe name given by ZTF (Name)meta.id;meta.maincharIAUIAU name for SNe (IAU Name)meta.idcharRAJ2000Right ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (Dec)degpos.eq.dec;meta.mainClassObject SN Ia classification with the ZTF SED machine (Classification)meta.code.class;src.classcharObsFirst observation date (Obs Date)time.epoch;obsnullableInstSpectroscopic instrument name (Instrument)meta.idcharRInstrumental resolution range (Resolution)pos.angResolutioncharSpecDate of the first spectroscopic observationtime.epochnullableJ/MNRAS/510/2228/table2*Heliocentric frame redshift for our SN Ia host galaxy sampleNameSNe name given by ZTF (Name)meta.id;meta.maincharRAJ2000Right ascension of the SNe (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Declination of the SNe (J2000) (Dec)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzhostSNe Ia host galaxy heliocentric redshift (z_helio_) (1)src.redshiftdoubleLCLight curvesmeta.ref.urlcharFileNameName of the light curve files path in ZTF datameta.idcharFileName2Name of the light curve files in subdirectory lcsmeta.idcharJ/MNRAS/510/2228/table2bThe light curves of SNe Ia in the complete Year 1 samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSNe name given by ZTF (Name)meta.id;meta.maincharzhostSNe Ia host galaxy heliocentric redshift (z_helio_) (1)src.redshiftdoubleRAJ2000Right ascension of the SNe (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Declination of the SNe (J2000) (Dec)degpos.eq.dec;meta.mainClassObject SN Ia classfifcation (Classification)meta.code.classcharFileNameName of the light curve files pathmeta.idcharFlag[Yes No] Indicates if the SNe pass the data quality test mentionned for the table2.datmeta.code.errorcharJ/MNRAS/510/2228/table3Output SALT2 fit parameters for SNe in our along with the CMB frame redshifte_BmagMean error of Bmag (em_b_)magstat.error;phot.magdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSNe name given by ZTF (ZTFName)meta.id;meta.maincharzCMBSNe Ia host galaxy redshift in CMB rest frame (z_CMB_) (1)src.redshift;pos.cmbdoubleBmagObserved apparent magnitude in B-band AB mag system (m_b_) (2)magphot.mag;em.opt.Bdoublex1The x1 SALT2 output parameter (x_1_) (2)stat.fit.paramdoublee_x1Mean error of x1 (ex_1_)stat.errordoublecThe c SALT2 output parameter (c) (2)stat.fit.paramdoublee_cMean error of c (ec)stat.errordouble