SN 2012ec: Mass of the progenitor from PESSTO follow-up of the photospheric phase

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dc.contributor.authorBarbarino, C.
dc.contributor.authorDall'Ora, M.
dc.contributor.authorBotticella, M.T.
dc.contributor.authorDella Valle, M.
dc.contributor.authorZampieri, L.
dc.contributor.authorMaund, J.R.
dc.contributor.authorPumo, M.L.
dc.contributor.authorJerkstrand, A.
dc.contributor.authorBenetti, S.
dc.contributor.authorElias-Rosa, N.
dc.contributor.authorFraser, M.
dc.contributor.authorGal-Yam, A.
dc.contributor.authorHamuy, M.
dc.contributor.authorInserra, C.
dc.contributor.authorKnapic, C.
dc.contributor.authorLaCluyze, A.P.
dc.contributor.authorMolinaro, M.
dc.contributor.authorOchner, P.
dc.contributor.authorPastorello, A.
dc.contributor.authorPignata, G.
dc.contributor.authorReichart, D.E.
dc.contributor.authorRies, C.
dc.contributor.authorRiffeser, A.
dc.contributor.authorSchmidt, B.
dc.contributor.authorSchmidt, M.
dc.contributor.authorSmareglia, R.
dc.contributor.authorSmartt, S.J.
dc.contributor.authorSmith, K.
dc.contributor.authorSollerman, J.
dc.contributor.authorSullivan, M.
dc.contributor.authorTomasella, L.
dc.contributor.authorTuratto, M.
dc.contributor.authorValenti, S.
dc.contributor.authorYaron, O.
dc.contributor.authorYoung, D.
dc.date.accessioned2023-06-20T15:11:46Z
dc.date.available2023-06-20T15:11:46Z
dc.date.issued2015-04
dc.descriptionIndexación: Scopuses
dc.description.abstractWe present the results of a photometric and spectroscopic monitoring campaign of SN 2012ec, which exploded in the spiral galaxy NGC 1084, during the photospheric phase. The photometric light curve exhibits a plateau with luminosity L = 0.9 × 1042 erg s-1 and duration ~90 d, which is somewhat shorter than standard Type II-P supernovae (SNe). We estimate the nickel mass M(56Ni) = 0.040 ± 0.015 M⊙ from the luminosity at the beginning of the radioactive tail of the light curve. The explosion parameters of SN 2012ec were estimated from the comparison of the bolometric light curve and the observed temperature and velocity evolution of the ejecta with predictions from hydrodynamical models.We derived an envelope mass of 12.6 M⊙, an initial progenitor radius of 1.6 × 1013 cm and an explosion energy of 1.2 foe. These estimates agree with an independent study of the progenitor star identified in pre-explosion images, for which an initial mass ofM = 14-22 M⊙ was determined.We have applied the same analysis to two other Type II-P SNe (SNe 2012aw and 2012A), and carried out a comparison with the properties of SN 2012ec derived in this paper.We find a reasonable agreement between the masses of the progenitors obtained from pre-explosion images and masses derived from hydrodynamical models. We estimate the distance to SN 2012ec with the standardized candle method (SCM) and compare it with other estimates based on other primary and secondary indicators. SNe 2012A, 2012aw and 2012ec all follow the standard relations for the SCM for the use of Type II-P SNe as distance indicators. © 2015 The Authors.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/448/3/2312/1093173
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 448, Issue 3, Pages 2312 - 233111 April 2015es
dc.identifier.doi10.1093/mnras/stv106
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50832
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.subjectSupernovae: generales
dc.subjectSupernovae: individual: NGC 1084es
dc.subjectSupernovae: individual: SN 2012Aes
dc.subjectSupernovae: individual: SN 2012awes
dc.subjectSupernovae: individual: SN 2012eces
dc.titleSN 2012ec: Mass of the progenitor from PESSTO follow-up of the photospheric phasees
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