J/ApJ/927/61ivo://CDS.VizieR/J/ApJ/927/61doi:10.26093/cds/vizier.19270061CDSKumar B.Singh A.Sahu D.K.Anupama G.C.2024-09-05T20:09:46Z2023-12-22T11:43:53ZCDS support team

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

cds-question@unistra.frsupernovaevisible-astronomyspectroscopyWe report results of optical imaging and low-resolution spectroscopic monitoring of supernova (SN) 2017iro that occurred in the nearby (~31Mpc) galaxy NGC 5480. The HeI{lambda}5876 feature present in the earliest spectrum (-7d) classified it as a Type Ib SN. The follow-up observations span from -7 to +266d with respect to the B-band maximum. With a peak absolute magnitude in V band M_V_=-17.76+/-0.15mag and bolometric luminosity log_10_L=42.39+/-0.09erg/s, SN 2017iro is a moderately luminous Type Ib SN. The overall light-curve evolution of SN 2017iro is similar to that of SN 2012au and SN 2009jf during the early (up to ~100d) and late phases (>150d), respectively. The line velocities of both FeII{lambda}5169 and HeI{lambda}5876 are ~9000km/s near the peak. The analysis of the nebular phase spectrum (~+209d) indicates an oxygen mass of ~0.35M_{sun}_. The smaller [OI]/[CaII] flux ratio of ~1 favors a progenitor with a zero-age main-sequence mass in the range ~13-15M_{sun}_, most likely in a binary system, similar to the case of iPTF13bvn. The explosion parameters are estimated by applying different analytical models to the quasi-bolometric light curve of SN 2017iro. ^56^Ni mass synthesized in the explosion has a range of ~0.05-0.10M_{sun}_, ejecta mass ~1.4-4.3M_{sun}_, and kinetic energy ~(0.8-1.9)x10^51^erg.2022ApJ...927...61Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/927/61CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/183 : UBVRI Photometric Standards (Landolt 1992)J/MNRAS/372/1315 : UBVRI photometry of SN 2004et (Sahu+, 2006)J/A+A/465/71 : 21cm observations of 452 galaxies (Theureau+, 2007)J/MNRAS/389/955 : u'BVg'r'i'z' light curves of SN 2008ax (Pastorello+, 2008)J/MNRAS/383/1485 : BVRI light curves of SN 2003jd (Valenti+, 2008)J/ApJ/692/L84 : Photometry of SN 2008D (Malesani+, 2009)J/ApJ/702/226 : Swift/UVOT panchromatic obs. of SN 2008D (Modjaz+, 2009)J/ApJ/742/L18 : Follow-up photometry of the SN IIb PTF 11eon (Arcavi+, 2011)J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/MNRAS/416/3138 : SN 2009jf light curves (Valenti+, 2011)J/other/Sci/337.444 : RV curves of Galactic massive O stars (Sana+, 2012)J/MNRAS/436/774 : Core collapse supernovae (type Ibc) (Eldridge+, 2013)J/MNRAS/431/308 : SN 2011fu BVRI light curves (Kumar+, 2013)J/ApJS/213/19 : Optical and near-IR light curves of 64 SNe (Bianco+, 2014)J/AJ/147/99 : Spectrosc. of 73 stripped core-collapse SNe (Modjaz+, 2014)J/MNRAS/454/95 : SN 2011fu UBVRI griz JHKs LCs (Morales-Garoffolo+, 2015)J/A+A/574/A60 : Light curve templates of SNe Ib/c from SDSS (Taddia+, 2015)J/ApJ/825/L22 : BVRI LCs of type Ib supernova iPTF13bvn (Folatelli+, 2016)J/A+A/593/A68 : PTF12os and iPTF13bvn spectra & LCs (Fremling+, 2016)J/ApJ/827/90 : Spectroscopy of SNe Ib, IIb and Ic (Liu+, 2016)J/ApJ/837/120 : Lick Observatory SN Search (LOSS) revisited (Graur+, 2017)J/MNRAS/482/1545 : Berkeley sample of stripped-envelope SNe (Shivvers+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/927/61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/927/61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/927/61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/927/61https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/927/61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/927/61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/927/61/spectraJournal of spectroscopic observations of SN 2017iro (Data behind Figures 6, 8 and 9)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observationtime.epochnullableJD[8089.4/8305.2] Julian Day; JD-2450000dtime.epochfloatPhase[-6.8/209] Phase with reference to the B-band maximum (JD2458096.2)dtime.epochfloatGrismsGrisms observed - Gr7 & Gr8meta.id;instrcharSp1Gr7 (3500-7800{AA})0.1nminstr.bandwidthcharSp2Gr8 (5200-9250{AA})0.1nminstr.bandwidthcharRes[7] Resolution ({AA})0.1nmspect.resolutioncharSpInteractive spectrum plotmeta.ref.urlchar