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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/31854
DC FieldValueLanguage
dc.contributor.authorGalbany, L.en_US
dc.contributor.authorAshall, C.en_US
dc.contributor.authorHöflich, P.en_US
dc.contributor.authorGonzález-Gaitán, S.en_US
dc.contributor.authorTaubenberger, S.en_US
dc.contributor.authorStritzinger, M.en_US
dc.contributor.authorHsiao, E. Y.en_US
dc.contributor.authorMazzali, P.en_US
dc.contributor.authorBaron, E.en_US
dc.contributor.authorBlondin, S.en_US
dc.contributor.authorBose, S.en_US
dc.contributor.authorBulla, M.en_US
dc.contributor.authorBurke, J. F.en_US
dc.contributor.authorBurns, C. R.en_US
dc.contributor.authorCartier, R.en_US
dc.contributor.authorChen, P.en_US
dc.contributor.authorDELLA VALLE, Massimoen_US
dc.contributor.authorDiamond, T. R.en_US
dc.contributor.authorGutiérrez, C. P.en_US
dc.contributor.authorHarmanen, J.en_US
dc.contributor.authorHiramatsu, D.en_US
dc.contributor.authorHoloien, T. W. -S.en_US
dc.contributor.authorHosseinzadeh, G.en_US
dc.contributor.authorHowell, D. Andrewen_US
dc.contributor.authorHuang, Y.en_US
dc.contributor.authorInserra, C.en_US
dc.contributor.authorde Jaeger, T.en_US
dc.contributor.authorJha, S. W.en_US
dc.contributor.authorKangas, T.en_US
dc.contributor.authorKromer, M.en_US
dc.contributor.authorLyman, J. D.en_US
dc.contributor.authorMaguire, K.en_US
dc.contributor.authorMarion, G. Howieen_US
dc.contributor.authorMilisavljevic, D.en_US
dc.contributor.authorPrentice, S. J.en_US
dc.contributor.authorRazza, A.en_US
dc.contributor.authorReynolds, T. M.en_US
dc.contributor.authorSand, D. J.en_US
dc.contributor.authorShappee, B. J.en_US
dc.contributor.authorShekhar, R.en_US
dc.contributor.authorSmartt, S. J.en_US
dc.contributor.authorStassun, K. G.en_US
dc.contributor.authorSullivan, M.en_US
dc.contributor.authorValenti, S.en_US
dc.contributor.authorVillanueva, S.en_US
dc.contributor.authorWang, X.en_US
dc.contributor.authorWheeler, J. Craigen_US
dc.contributor.authorZhai, Q.en_US
dc.contributor.authorZhang, J.en_US
dc.date.accessioned2022-03-24T10:59:43Z-
dc.date.available2022-03-24T10:59:43Z-
dc.date.issued2019en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12386/31854-
dc.description.abstractAims: We present a comprehensive dataset of optical and near-infrared photometry and spectroscopy of type Ia supernova (SN) 2016hnk, combined with integral field spectroscopy (IFS) of its host galaxy, MCG -01-06-070, and nearby environment. Our goal with this complete dataset is to understand the nature of this peculiar object. Methods: Properties of the SN local environment are characterized by means of single stellar population synthesis applied to IFS observations taken two years after the SN exploded. We performed detailed analyses of SN photometric data by studying its peculiar light and color curves. SN 2016hnk spectra were compared to other 1991bg-like SNe Ia, 2002es-like SNe Ia, and Ca-rich transients. In addition, we used abundance stratification modeling to identify the various spectral features in the early phase spectral sequence and also compared the dataset to a modified non-LTE model previously produced for the sublumnious SN 1999by. <BR /> Results: SN 2016hnk is consistent with being a subluminous (M<SUB>B</SUB> = -16.7 mag, s<SUB>BV</SUB>=0.43 ± 0.03), highly reddened object. The IFS of its host galaxy reveals both a significant amount of dust at the SN location, residual star formation, and a high proportion of old stellar populations in the local environment compared to other locations in the galaxy, which favors an old progenitor for SN 2016hnk. Inspection of a nebular spectrum obtained one year after maximum contains two narrow emission lines attributed to the forbidden [Ca II] λλ7291,7324 doublet with a Doppler shift of 700 km s<SUP>-1</SUP>. Based on various observational diagnostics, we argue that the progenitor of SN 2016hnk was likely a near Chandrasekhar-mass (M<SUB>Ch</SUB>) carbon-oxygen white dwarf that produced 0.108 M<SUB>☉</SUB> of <SUP>56</SUP>Ni. Our modeling suggests that the narrow [Ca II] features observed in the nebular spectrum are associated with <SUP>48</SUP>Ca from electron capture during the explosion, which is expected to occur only in white dwarfs that explode near or at the M<SUB>Ch</SUB> limit. <P />Tables C.1-C.7 are also available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr/">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/630/A76">http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/630/A76</A>en_US
dc.language.isoengen_US
dc.titleEvidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type Ia supernova 2016hnken_US
dc.typeArticle-
dc.identifier.doi10.1051/0004-6361/201935537en_US
dc.identifier.scopus2-s2.0-85077575481en_US
dc.identifier.urlhttps://www.aanda.org/articles/aa/full_html/2019/10/aa35537-19/aa35537-19.htmlen_US
dc.relation.mediumSTAMPAen_US
dc.relation.volume630en_US
dc.relation.firstpageA76en_US
dc.type.refereeREF_1en_US
dc.description.internationalsìen_US
dc.contributor.countryITAen_US
dc.contributor.countryUSAen_US
dc.contributor.countryGBRen_US
dc.contributor.countryFRAen_US
dc.contributor.countryDEUen_US
dc.contributor.countryESPen_US
dc.relation.scientificsectorFIS/05 - ASTRONOMIA E ASTROFISICAen_US
dc.relation.journalASTRONOMY & ASTROPHYSICSen_US
dc.type.miur262 Articolo in rivista-
dc.identifier.adsbibcode2019A&A...630A..76Gen_US
dc.description.apcnoen_US
dc.description.oa1 – prodotto con file in versione Open Access (allegare il file al passo  5-Carica)en_US
item.grantfulltextopen-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.journal.journalissn0004-6361-
crisitem.journal.anceE016240-
crisitem.author.deptO.A. Capodimonte-
crisitem.author.orcid0000-0003-3142-5020-
Appears in Collections:1.01 Articoli in rivista
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