SN 2009ib: A Type II-P supernova with an unusually long plateau

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dc.contributor.authorTakáts, K.
dc.contributor.authorPignata, G.
dc.contributor.authorPumo, M.L.
dc.contributor.authorPaillas, E.
dc.contributor.authorZampieri, L.
dc.contributor.authorElias-Rosa, N.
dc.contributor.authorBenetti, S.
dc.contributor.authorBufano, F.
dc.contributor.authorCappellaro, E.
dc.contributor.authorErgon, M.
dc.contributor.authorFraser, M.
dc.contributor.authorHamuy, M.
dc.contributor.authorInserra, C.
dc.contributor.authorKankare, E.
dc.contributor.authorSmartt, S.J.
dc.contributor.authorStritzinger, M.D.
dc.contributor.authorVan Dyk, S.D.
dc.contributor.authorHaislip, J.B.
dc.contributor.authorLaCluyze, A.P.
dc.contributor.authorMoore, J.P.
dc.contributor.authorReichart, D.
dc.date.accessioned2023-06-06T15:54:41Z
dc.date.available2023-06-06T15:54:41Z
dc.date.issued2015-05
dc.descriptionIndexación: Scopuses
dc.description.abstractWe present optical and near-infrared photometry and spectroscopy of SN 2009ib, a Type II-P supernova in NGC 1559. This object has moderate brightness, similar to those of the intermediate-luminosity SNe 2008in and 2009N. Its plateau phase is unusually long, lasting for about 130 d after explosion. The spectra are similar to those of the subluminous SN 2002gd, with moderate expansion velocities.We estimate the 56Ni mass produced as 0.046±0.015M⊙. We determine the distance to SN 2009ib using both the expanding photosphere method (EPM) and the standard candle method. We also apply EPM to SN 1986L, a Type II-P SN that exploded in the same galaxy. Combining the results of different methods, we conclude the distance to NGC 1559 as D = 19.8 ± 3.0 Mpc. We examine archival, pre-explosion images of the field taken with the Hubble Space Telescope, and find a faint source at the position of the SN, which has a yellow colour [(V - I)0 = 0.85 mag]. Assuming it is a single star, we estimate its initial mass as MZAMS = 20M⊙. We also examine the possibility, that instead of the yellow source the progenitor of SN 2009ib is a red supergiant star too faint to be detected. In this case, we estimate the upper limit for the initial zero-age main sequence (ZAMS) mass of the progenitor to be ~14-17M⊙. In addition, we infer the physical properties of the progenitor at the explosion via hydrodynamical modelling of the observables, and estimate the total energy as ~0.55 × 1051 erg, the pre-explosion radius as ~400 R⊙, and the ejected envelope mass as ~15M⊙, which implies that the mass of the progenitor before explosion was ~16.5-17M⊙. © 2015 The Authors.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/450/3/3137/1072380
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 450, Issue 3, Pages 3137 - 315412 May 2015es
dc.identifier.doi10.1093/mnras/stv857
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50371
dc.language.isoenes
dc.publisherOxford University Presses
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.titleSN 2009ib: A Type II-P supernova with an unusually long plateaues
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