SN 2020udy: A new piece of the homogeneous bright group in the diverse Iax subclass
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909072894197760 |
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| author | Singh, Mridweeka Sahu, Devendra K. Barna, Barnabas Gangopadhyay, Anjasha Dastidar, Raya Teja, Rishabh Singh Misra, Kuntal Howell, D. Andrew Wang, Xiaofeng Mo, Jun Yan, Shengyu Hiramatsu, Daichi Pellegrino, Craig Anupama, G. C. Joshi, Arti Bostroem, K. Azalee Burke, Jamison McCully, Curtis Subramanian V, Rama Li, Gaici Xi, Gaobo Li, Xin Li, Zhitong Srivastav, Shubham Im, Hyobin Dutta, Anirban |
| author_facet | Singh, Mridweeka Sahu, Devendra K. Barna, Barnabas Gangopadhyay, Anjasha Dastidar, Raya Teja, Rishabh Singh Misra, Kuntal Howell, D. Andrew Wang, Xiaofeng Mo, Jun Yan, Shengyu Hiramatsu, Daichi Pellegrino, Craig Anupama, G. C. Joshi, Arti Bostroem, K. Azalee Burke, Jamison McCully, Curtis Subramanian V, Rama Li, Gaici Xi, Gaobo Li, Xin Li, Zhitong Srivastav, Shubham Im, Hyobin Dutta, Anirban |
| contents | We present optical observations and analysis of a bright type Iax SN~2020udy hosted by NGC 0812. The light curve evolution of SN~2020udy is similar to other bright Iax SNe. Analytical modeling of the quasi bolometric light curves of SN 2020udy suggests that 0.08$\pm$0.01 M$_{\odot}$ of $^{56}$Ni would have been synthesized during the explosion. Spectral features of SN 2020udy are similar to the bright members of type Iax class showing weak Si {\sc II} line. The late-time spectral sequence is mostly dominated by Iron Group Elements (IGEs) 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 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_07107 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | SN 2020udy: A new piece of the homogeneous bright group in the diverse Iax subclass Singh, Mridweeka Sahu, Devendra K. Barna, Barnabas Gangopadhyay, Anjasha Dastidar, Raya Teja, Rishabh Singh Misra, Kuntal Howell, D. Andrew Wang, Xiaofeng Mo, Jun Yan, Shengyu Hiramatsu, Daichi Pellegrino, Craig Anupama, G. C. Joshi, Arti Bostroem, K. Azalee Burke, Jamison McCully, Curtis Subramanian V, Rama Li, Gaici Xi, Gaobo Li, Xin Li, Zhitong Srivastav, Shubham Im, Hyobin Dutta, Anirban High Energy Astrophysical Phenomena Solar and Stellar Astrophysics We present optical observations and analysis of a bright type Iax SN~2020udy hosted by NGC 0812. The light curve evolution of SN~2020udy is similar to other bright Iax SNe. Analytical modeling of the quasi bolometric light curves of SN 2020udy suggests that 0.08$\pm$0.01 M$_{\odot}$ of $^{56}$Ni would have been synthesized during the explosion. Spectral features of SN 2020udy are similar to the bright members of type Iax class showing weak Si {\sc II} line. The late-time spectral sequence is mostly dominated by Iron Group Elements (IGEs) 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 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. |
| title | SN 2020udy: A new piece of the homogeneous bright group in the diverse Iax subclass |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2401.07107 |