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SN 2019muj - a well-observed Type Iax supernova that bridges the luminosity gap of the class

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dc.abstract.enWe present early-time (t < +50 d) observations of SN 2019muj (=ASASSN-19tr), one of the best-observed members of the peculiar SN Iax class. Ultraviolet and optical photometric and optical and near-infrared spectroscopic follow-up started from ˜5 d before maximum light [t<SUB>max</SUB>(B) on $58707.8$ MJD] and covers the photospheric phase. The early observations allow us to estimate the physical properties of the ejecta and characterize the possible divergence from a uniform chemical abundance structure. The estimated bolometric light-curve peaks at 1.05 × 10<SUP>42</SUP> erg s<SUP>-1</SUP> and indicates that only 0.031 M<SUB>⊙</SUB> of <SUP>56</SUP>Ni was produced, making SN 2019muj a moderate luminosity object in the Iax class with peak absolute magnitude of $M_\rm {V} = -16.4$ mag. The estimated date of explosion is t<SUB>0</SUB> = $58698.2$ MJD and implies a short rise time of t<SUB>rise</SUB> = 9.6 d in B band. We fit of the spectroscopic data by synthetic spectra, calculated via the radiative transfer code TARDIS. Adopting the partially stratified abundance template based on brighter SNe Iax provides a good match with SN 2019muj. However, without earlier spectra, the need for stratification cannot be stated in most of the elements, except carbon, which is allowed to appear in the outer layers only. SN 2019muj provides a unique opportunity to link extremely low-luminosity SNe Iax to well-studied, brighter SNe Iax.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorBarna, Barnabás
dc.contributor.authorSzalai, Tamás
dc.contributor.authorJha, Saurabh W.
dc.contributor.authorCamacho-Neves, Yssavo
dc.contributor.authorKwok, Lindsey
dc.contributor.authorFoley, Ryan J.
dc.contributor.authorKilpatrick, Charles D.
dc.contributor.authorCoulter, David A.
dc.contributor.authorDimitriadis, Georgios
dc.contributor.authorRest, Armin
dc.contributor.authorRojas-Bravo, César
dc.contributor.authorSiebert, Matthew R.
dc.contributor.authorBrown, Peter J.
dc.contributor.authorBurke, Jamison
dc.contributor.authorGonzalez, Estefania Padilla
dc.contributor.authorHiramatsu, Daichi
dc.contributor.authorHowell, D. Andrew
dc.contributor.authorMcCully, Curtis
dc.contributor.authorPellegrino, Craig
dc.contributor.authorDobson, Matthew
dc.contributor.authorSmartt, Stephen J.
dc.contributor.authorSwift, Jonathan J.
dc.contributor.authorStacey, Holland
dc.contributor.authorRahman, Mohammed
dc.contributor.authorSand, David J.
dc.contributor.authorAndrews, Jennifer
dc.contributor.authorWyatt, Samuel
dc.contributor.authorHsiao, Eric Y.
dc.contributor.authorAnderson, Joseph P.
dc.contributor.authorChen, Ting-Wan
dc.contributor.authorValle, Massimo Della
dc.contributor.authorGalbany, Lluís
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorInserra, Cosimo
dc.contributor.authorLyman, Joe
dc.contributor.authorMagee, Mark
dc.contributor.authorMaguire, Kate
dc.contributor.authorMüller-Bravo, Tomás E.
dc.contributor.authorNicholl, Matt
dc.contributor.authorSrivastav, Shubham
dc.contributor.authorWilliams, Steven C.
dc.date.accessioned2024-01-26T07:50:56Z
dc.date.available2024-01-26T07:50:56Z
dc.date.copyright2020-11-05
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume501
dc.identifier.doi10.1093/MNRAS/STAA3543
dc.identifier.issn0035-8711
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/120070
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2021MNRAS.501.1078B
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.pages1078-1099
dc.rightsOther
dc.sciencecloudnosend
dc.titleSN 2019muj - a well-observed Type Iax supernova that bridges the luminosity gap of the class
dc.typeJournalArticle
dspace.entity.typePublication