A long life of excess: The interacting transient SN 2017hcc

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dc.contributor.authorMoran S.
dc.contributor.authorFraser M.
dc.contributor.authorKotak R.
dc.contributor.authorPastorello A.
dc.contributor.authorBenetti S.
dc.contributor.authorBrennan S.J.
dc.contributor.authorGutiérrez C.P.
dc.contributor.authorKankare E.
dc.contributor.authorKuncarayakti H.
dc.contributor.authorMattila S.
dc.contributor.authorReynolds T.M.
dc.contributor.authorAnderson J.P.
dc.contributor.authorBrown P.J.
dc.contributor.authorCampana S.
dc.contributor.authorChambers K.C.
dc.contributor.authorChen T.-W.
dc.contributor.authorDella Valle M.
dc.contributor.authorDennefeld M.
dc.contributor.authorElias-Rosa N.
dc.contributor.authorGalbany L.
dc.contributor.authorGalindo-Guil F.J.
dc.contributor.authorGromadzki M.
dc.contributor.authorHiramatsu D.
dc.contributor.authorInserra C.
dc.contributor.authorLeloudas G.
dc.contributor.authorMüller-Bravo T.E.
dc.contributor.authorNicholl M.
dc.contributor.authorReguitti A.
dc.contributor.authorShahbandeh M.
dc.contributor.authorSmartt S.J.
dc.contributor.authorTartaglia L.
dc.contributor.authorYoung D.R.
dc.date.accessioned2024-03-27T15:04:41Z
dc.date.available2024-03-27T15:04:41Z
dc.date.issued2023-01
dc.descriptionIndexación: Scopus.
dc.description.abstractIn this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 ± 2 days, ATLAS o band) and high luminosity (peaking at -20.78 ± 0.01 mag in the ATLAS o band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 d. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs ≳;+800 d. © The Authors 2023.
dc.identifier.citationAstronomy and Astrophysics. Volume 669. 1 January 2023. Article number A51
dc.identifier.doi10.1051/0004-6361/202244565
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/55363
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.licenseCC BY 4.0 DEED Attribution 4.0 International
dc.subjectSupernovae: general
dc.subjectSupernovae: individual: ATLAS17lsn
dc.subjectSupernovae: individual: PS17fra
dc.subjectSupernovae: individual: SN 2017hcc
dc.titleA long life of excess: The interacting transient SN 2017hcc
dc.typeArtículo
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