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SN 2020udy: A New Piece of the Homogeneous Bright Group in the Diverse Iax Subclass

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dc.contributor.author Singh, Mridweeka
dc.contributor.author Sahu, D. K
dc.contributor.author Barna, Barnabas
dc.contributor.author Gangopadhyay, Anjasha
dc.contributor.author Dastidar, Raya
dc.contributor.author Teja, Rishabh Singh
dc.contributor.author Misra, Kuntal
dc.contributor.author Howell, D. Andrew
dc.contributor.author Wang, Xiaofeng
dc.contributor.author Mo, Jun
dc.contributor.author Yan, Shengyu
dc.contributor.author Hiramatsu, Daichi
dc.contributor.author Pellegrino, Craig
dc.contributor.author Anupama, G. C
dc.contributor.author Joshi, Arti
dc.contributor.author Bostroem, K. Azalee
dc.contributor.author Burke, Jamison
dc.contributor.author McCully, Curtis
dc.contributor.author Rama Subramanian, V
dc.contributor.author Li, Gaici
dc.contributor.author Xi, Gaobo
dc.contributor.author Li, Xin
dc.contributor.author Li, Zhitong
dc.contributor.author Srivastav, Shubham
dc.contributor.author Im, Hyobin
dc.contributor.author Dutta, Anirban
dc.date.accessioned 2024-05-07T09:07:49Z
dc.date.available 2024-05-07T09:07:49Z
dc.date.issued 2024-04-10
dc.identifier.citation The Astrophysical Journal, Vol. 965, No. 1, 73 en_US
dc.identifier.issn 1538-4357
dc.identifier.uri http://hdl.handle.net/2248/8457
dc.description Open Access. en_US
dc.description Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
dc.description.abstract We present optical observations and analysis of the bright type Iax supernova SN 2020udy hosted by NGC 0812. The evolution of the light curve of SN 2020udy is similar to that of other bright type Iax SNe. Analytical modeling of the quasi-bolometric light curves of SN 2020udy suggests that 0.08 ± 0.01 Me of 56Ni would have been synthesized during the explosion. The spectral features of SN 2020udy are similar to those of the bright members of type Iax class, showing a weak Si II line. The late-time spectral sequence is mostly dominated by iron group elements with broad emission lines. Abundance tomography modeling of the spectral time series of SN 2020udy using TARDIS indicates stratification in the outer ejecta; however, to confirm this, spectral modeling at a very early phase is required. After maximum light, uniform mixing of chemical elements is sufficient to explain the spectral evolution. Unlike in the case of normal type Ia SNe, the photospheric approximation remains robust until +100 days, requiring an additional continuum source. Overall, the observational features of SN 2020udy are consistent with the deflagration of a carbon–oxygen white dwarf. en_US
dc.language.iso en en_US
dc.publisher American Astronomical Society en_US
dc.relation.uri https://doi.org/10.3847/1538-4357/ad2618
dc.rights © 2024. The Author(s)
dc.subject Supernovae en_US
dc.title SN 2020udy: A New Piece of the Homogeneous Bright Group in the Diverse Iax Subclass en_US
dc.type Article en_US


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