J/ApJ/900/46ivo://CDS.VizieR/J/ApJ/900/46doi:10.26093/cds/vizier.19000046CDSYao Y.De K.Kasliwal M.M.Ho A.Y.Q.Schulze S.Li Z.Kulkarni S.R.,Fruchter A.Rubin D.Perley D.A.Fuller J.Piro A.L.Fremling C.,Bellm E.C.Burruss R.Duev D.A.Feeney M.Gal-Yam A.Golkhou V.Z.,Graham M.J.Helou G.Kupfer T.Laher R.R.Masci F.J.Miller A.A.,Rusholme B.Shupe D.L.Smith R.Sollerman J.Soumagnac M.T.Zolkower J.2022-03-11T14:13:09Z2021-11-12T07:35:58ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomyWide-band photometryWe present observations of ZTF18abfcmjw (SN2019dge), a helium-rich supernova with a fast-evolving light curve indicating an extremely low ejecta mass (~0.33M{sun}) and low kinetic energy (~1.3x1050erg). Early-time (<4days after explosion) photometry reveals evidence of shock cooling from an extended helium-rich envelope of ~0.1M{sun} located ~1.2x1013cm from the progenitor. Early-time HeII line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from >~5x1013cm to >~2x1016cm. We interpret SN2019dge as a helium-rich supernova from an ultra-stripped progenitor, which originates from a close binary system consisting of a mass-losing helium star and a low-mass main-sequence star or a compact object (i.e., a white dwarf, a neutron star, or a black hole). We infer that the local volumetric birth rate of 19dge-like ultra-stripped SNe is in the range of 1400-8200/Gpc^3^/yr (i.e., 2%-12% of core-collapse supernova rate). This can be compared to the observed coalescence rate of compact neutron star binaries that are not formed by dynamical capture.2020ApJ...900...46Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/900/46CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/64 : Recombination line intensities for hydrogenic ions (Storey+ 1995)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/MNRAS/383/1485 : BVRI light curves of SN 2003jd (Valenti+, 2008)J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/MNRAS/436/774 : Core collapse supernovae (type Ibc) (Eldridge+, 2013)J/A+A/559/A114 : Updated O3N2 and N2 abundance indicators (Marino+, 2013)J/ApJ/763/42 : X-ray emission from 28 SNe (IIn, Ibn or SLSN-I) (Ofek+,2013)J/ApJ/768/47 : Swift/XRT 0.2-10keV observations of SN2009ip (Ofek+, 2013)J/MNRAS/449/1921 : UV/optical/NIR photometry for TypeIbn SNe (Pastorello+,2015)J/MNRAS/449/1876 : Photometric observations of SN PTF11iqb (Smith+, 2015)J/A+A/593/A68 : PTF12os & iPTF13bvn spectra & light curves (Fremling+, 2016)J/ApJ/827/90 : Spectroscopy of SNe Ib, IIb and Ic (Liu+, 2016)J/ApJ/851/107 : iPTF 16asu photometry follow-up (Whitesides+, 2017)J/other/Sci/362.201 : iPTF 14gqr (SN 2014ft) photometry (De+, 2018)J/A+A/618/A37 : Spectral log of (i)PTF stripped-envelope SN (Fremling+,2018)J/ApJ/887/169 : UV-Opt light curves of the type Ic SN 2018gep (Ho+, 2019)J/ApJ/886/152 : ZTF early observations of Type Ia SNe. I. LCs (Yao+, 2019)J/ApJ/895/32 : Zwicky Transient Facility BTS. I. (Fremling+, 2020)J/ApJ/895/49 : Optical spectrum of ZTF18abvkwla & host galaxy (Ho+, 2020)J/A+A/637/A6 : Stripped-envelope stars Binary Evo. Models (Laplace+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/900/46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/900/46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/900/46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/900/46https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/900/46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/900/46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/900/46/tablea1Optical and UV photometry for SN2019dgerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[58580/58643] Modified Julian Datedtime.epochdoubleInstInstrument usedinstr.setupcharFiltFilter usedinstr.setup;instr.filtercharmag[18.2/22.4] Apparent magnitude in Filter (1)magphot.magfloate_mag[0.01/0.5] Uncertainty in magmagstat.error;phot.magfloat