Luminous Type II Short-Plateau SN 2023ufx: Asymmetric Explosion of a Partially-Stripped Massive Progenitor
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2024
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| author | Ravi, Aravind P. Valenti, Stefano Dong, Yize Hiramatsu, Daichi Barmentloo, Stan Jerkstrand, Anders Bostroem, K. Azalee Pearson, Jeniveve Shrestha, Manisha Andrews, Jennifer E. Sand, David J. Hosseinzadeh, Griffin Lundquist, Michael Hoang, Emily Mehta, Darshana Retamal, Nicolas Meza Martas, Aidan Jha, Saurabh W. Janzen, Daryl Subrayan, Bhagya Howell, D. Andrew McCully, Curtis Farah, Joseph Newsome, Megan Gonzalez, Estefania Padilla Terreran, Giacomo Andrews, Moira Filippenko, Alexei V. Brink, Thomas G. Zheng, Weikang Yang, Yi Vinko, Jozsef Wheeler, J. Craig Smith, Nathan Rho, Jeonghee Konyves-Toth, Reka Gutierrez, Claudia P. |
| author_facet | Ravi, Aravind P. Valenti, Stefano Dong, Yize Hiramatsu, Daichi Barmentloo, Stan Jerkstrand, Anders Bostroem, K. Azalee Pearson, Jeniveve Shrestha, Manisha Andrews, Jennifer E. Sand, David J. Hosseinzadeh, Griffin Lundquist, Michael Hoang, Emily Mehta, Darshana Retamal, Nicolas Meza Martas, Aidan Jha, Saurabh W. Janzen, Daryl Subrayan, Bhagya Howell, D. Andrew McCully, Curtis Farah, Joseph Newsome, Megan Gonzalez, Estefania Padilla Terreran, Giacomo Andrews, Moira Filippenko, Alexei V. Brink, Thomas G. Zheng, Weikang Yang, Yi Vinko, Jozsef Wheeler, J. Craig Smith, Nathan Rho, Jeonghee Konyves-Toth, Reka Gutierrez, Claudia P. |
| contents | We present supernova (SN) 2023ufx, a unique Type IIP SN with the shortest known plateau duration ($t_\mathrm{PT}$ $\sim$47 days), a luminous V-band peak ($M_{V}$ = $-$18.42 $\pm$ 0.08 mag), and a rapid early decline rate ($s1$ = 3.47 $\pm$ 0.09 mag (50 days)$^{-1}$). By comparing observed photometry to a hydrodynamic MESA+STELLA model grid, we constrain the progenitor to be a massive red supergiant with M$_\mathrm{ZAMS}$ $\simeq$19 - 25 M$_{\odot}$. Independent comparisons with nebular spectral models also suggest an initial He-core mass of $\sim$6 M$_{\odot}$, and thus a massive progenitor. For a Type IIP, SN 2023ufx produced an unusually high amount of nickel ($^{56}$Ni) $\sim$0.14 $\pm$ 0.02 M$_{\odot}$, during the explosion. We find that the short plateau duration in SN 2023ufx can be explained with the presence of a small hydrogen envelope (M$_\mathrm{H_\mathrm{env}}$ $\simeq$1.2 M$_{\odot}$), suggesting partial stripping of the progenitor. About $\simeq$0.09 M$_{\odot}$ of CSM through mass loss from late-time stellar evolution of the progenitor is needed to fit the early time ($\lesssim$10 days) pseudo-bolometric light curve. Nebular line diagnostics of broad and multi-peak components of [O I] $λλ$6300, 6364, H$α$, and [Ca II] $λλ$7291, 7323 suggest that the explosion of SN 2023ufx could be inherently asymmetric, preferentially ejecting material along our line-of-sight. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_02493 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Luminous Type II Short-Plateau SN 2023ufx: Asymmetric Explosion of a Partially-Stripped Massive Progenitor Ravi, Aravind P. Valenti, Stefano Dong, Yize Hiramatsu, Daichi Barmentloo, Stan Jerkstrand, Anders Bostroem, K. Azalee Pearson, Jeniveve Shrestha, Manisha Andrews, Jennifer E. Sand, David J. Hosseinzadeh, Griffin Lundquist, Michael Hoang, Emily Mehta, Darshana Retamal, Nicolas Meza Martas, Aidan Jha, Saurabh W. Janzen, Daryl Subrayan, Bhagya Howell, D. Andrew McCully, Curtis Farah, Joseph Newsome, Megan Gonzalez, Estefania Padilla Terreran, Giacomo Andrews, Moira Filippenko, Alexei V. Brink, Thomas G. Zheng, Weikang Yang, Yi Vinko, Jozsef Wheeler, J. Craig Smith, Nathan Rho, Jeonghee Konyves-Toth, Reka Gutierrez, Claudia P. High Energy Astrophysical Phenomena Solar and Stellar Astrophysics We present supernova (SN) 2023ufx, a unique Type IIP SN with the shortest known plateau duration ($t_\mathrm{PT}$ $\sim$47 days), a luminous V-band peak ($M_{V}$ = $-$18.42 $\pm$ 0.08 mag), and a rapid early decline rate ($s1$ = 3.47 $\pm$ 0.09 mag (50 days)$^{-1}$). By comparing observed photometry to a hydrodynamic MESA+STELLA model grid, we constrain the progenitor to be a massive red supergiant with M$_\mathrm{ZAMS}$ $\simeq$19 - 25 M$_{\odot}$. Independent comparisons with nebular spectral models also suggest an initial He-core mass of $\sim$6 M$_{\odot}$, and thus a massive progenitor. For a Type IIP, SN 2023ufx produced an unusually high amount of nickel ($^{56}$Ni) $\sim$0.14 $\pm$ 0.02 M$_{\odot}$, during the explosion. We find that the short plateau duration in SN 2023ufx can be explained with the presence of a small hydrogen envelope (M$_\mathrm{H_\mathrm{env}}$ $\simeq$1.2 M$_{\odot}$), suggesting partial stripping of the progenitor. About $\simeq$0.09 M$_{\odot}$ of CSM through mass loss from late-time stellar evolution of the progenitor is needed to fit the early time ($\lesssim$10 days) pseudo-bolometric light curve. Nebular line diagnostics of broad and multi-peak components of [O I] $λλ$6300, 6364, H$α$, and [Ca II] $λλ$7291, 7323 suggest that the explosion of SN 2023ufx could be inherently asymmetric, preferentially ejecting material along our line-of-sight. |
| title | Luminous Type II Short-Plateau SN 2023ufx: Asymmetric Explosion of a Partially-Stripped Massive Progenitor |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2411.02493 |