Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31861
Title: | SN 2019muj - a well-observed Type Iax supernova that bridges the luminosity gap of the class | Authors: | Barna, Barnabás Szalai, Tamás Jha, Saurabh W. Camacho-Neves, Yssavo Kwok, Lindsey Foley, Ryan J. Kilpatrick, Charles D. Coulter, David A. Dimitriadis, Georgios Rest, Armin Rojas-Bravo, César Siebert, Matthew R. Brown, Peter J. Burke, Jamison Padilla Gonzalez, Estefania Hiramatsu, Daichi Howell, D. Andrew McCully, Curtis Pellegrino, Craig Dobson, Matthew Smartt, Stephen J. Swift, Jonathan J. Stacey, Holland Rahman, Mohammed Sand, David J. Andrews, Jennifer Wyatt, Samuel Hsiao, Eric Y. Anderson, Joseph P. Chen, Ting-Wan DELLA VALLE, Massimo Galbany, Lluís Gromadzki, Mariusz Inserra, Cosimo Lyman, Joe Magee, Mark Maguire, Kate Müller-Bravo, Tomás E. Nicholl, Matt Srivastav, Shubham Williams, Steven C. |
Issue Date: | 2021 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 501 | Issue: | 1 | First Page: | 1078 | Abstract: | We 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. | URI: | http://hdl.handle.net/20.500.12386/31861 | URL: | https://academic.oup.com/mnras/article/501/1/1078/5981637?login=true http://arxiv.org/abs/2011.03068v1 |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/staa3543 | Bibcode ADS: | 2021MNRAS.501.1078B | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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staa3543.pdf | Pdf editoriale | 7.67 MB | Adobe PDF | View/Open |
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