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Investigating the Observational Properties of Type Ib Supernova SN 2017iro

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dc.contributor.author Kumar, Brajesh
dc.contributor.author Singh, Avinash
dc.contributor.author Sahu, D. K.
dc.contributor.author Anupama, G. C.
dc.date.accessioned 2024-05-20T07:01:45Z
dc.date.available 2024-05-20T07:01:45Z
dc.date.issued 2022-03
dc.identifier.uri https://doi.org/10.3847/1538-4357/ac4bb9
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/1630
dc.description.abstract We report results of optical imaging and low-resolution spectroscopic monitoring of supernova (SN) 2017iro that occurred in the nearby (∼31 Mpc) galaxy NGC 5480. The He I λ5876 feature present in the earliest spectrum (−7 days) classified it as a Type Ib SN. The follow-up observations span from −7 to +266 days with respect to the B-band maximum. With a peak absolute magnitude in V band MV = −17.76 ± 0.15 mag and bolometric luminosity log10 L = 42.39 ± 0.09 erg s−1 , 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 ∼100 days) and late phases (>150 days), respectively. The line velocities of both Fe II λ5169 and He I λ5876 are ∼9000 km s−1 near the peak. The analysis of the nebular phase spectrum (∼+209 days) indicates an oxygen mass of ∼0.35 Me. The smaller [O I]/[Ca II] flux ratio of ∼1 favors a progenitor with a zero-age main-sequence mass in the range ∼13–15 Me, 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. 56Ni mass synthesized in the explosion has a range of ∼0.05–0.10 Me, ejecta mass ∼1.4–4.3 Me, and kinetic energy ∼(0.8–1.9) × 1051 erg. en_US
dc.language.iso en en_US
dc.publisher The Astrophysical Journal en_US
dc.relation.ispartofseries 1842;apj927-61
dc.subject Type Ib supernovae en_US
dc.subject Supernovae en_US
dc.subject Core-collapse supernovae en_US
dc.title Investigating the Observational Properties of Type Ib Supernova SN 2017iro en_US
dc.type Article en_US


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