SN 2019hnl: A Type IIP Supernova with a Partially Stripped, Low Mass Progenitor
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| author | Martas, Aidan Valenti, Stefano Ravi, Aravind P. Dong, Yize Bostroem, K. Azalee Pearson, Jeniveve Shrestha, Manisha Andrews, Jennifer E. Sand, David J. Hosseinzadeh, Griffin Lundquist, Michael Hoang, Emily Mehta, Darshana Retamal, Nicolas Meza Jha, Saurabh W. Janzen, Daryl Howell, D. Andrew McCully, Curtis Hiramatsu, Daichi Pellegrino, Craig |
| author_facet | Martas, Aidan Valenti, Stefano Ravi, Aravind P. Dong, Yize Bostroem, K. Azalee Pearson, Jeniveve Shrestha, Manisha Andrews, Jennifer E. Sand, David J. Hosseinzadeh, Griffin Lundquist, Michael Hoang, Emily Mehta, Darshana Retamal, Nicolas Meza Jha, Saurabh W. Janzen, Daryl Howell, D. Andrew McCully, Curtis Hiramatsu, Daichi Pellegrino, Craig |
| contents | We present optical photometry and spectroscopy of SN 2019hnl. Discovered within ~26 hr of explosion by the ATLAS survey, SN 2019hnl is a typical Type IIP supernova with a peak absolute V band magnitude of -16.7+-0.1 mag, a plateau length of ~107 days, and an early decline rate of 0.0086+-0.0006 mag (50 days)^-1. We use nebular spectroscopy and hydrodynamic modeling with the SNEC, MESA, and STELLA codes to infer that the progenitor of SN 2019hnl was a M_ZAMS ~ 11M_solar red supergiant which produced 0.047+-0.007M_solar of 56Ni in the explosion. As a part of our hydrodynamic modeling, we reduced hydrogen envelope mass by scaling the mass loss within the "Dutch" wind scheme to fit our light curve, showing that the progenitor of a relatively typical Type IIP SN may experience partial stripping during their evolution and establish massive (~0.2M_solar) CSM environments prior to core collapse. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_03732 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | SN 2019hnl: A Type IIP Supernova with a Partially Stripped, Low Mass Progenitor Martas, Aidan Valenti, Stefano Ravi, Aravind P. Dong, Yize Bostroem, K. Azalee Pearson, Jeniveve Shrestha, Manisha Andrews, Jennifer E. Sand, David J. Hosseinzadeh, Griffin Lundquist, Michael Hoang, Emily Mehta, Darshana Retamal, Nicolas Meza Jha, Saurabh W. Janzen, Daryl Howell, D. Andrew McCully, Curtis Hiramatsu, Daichi Pellegrino, Craig High Energy Astrophysical Phenomena Solar and Stellar Astrophysics We present optical photometry and spectroscopy of SN 2019hnl. Discovered within ~26 hr of explosion by the ATLAS survey, SN 2019hnl is a typical Type IIP supernova with a peak absolute V band magnitude of -16.7+-0.1 mag, a plateau length of ~107 days, and an early decline rate of 0.0086+-0.0006 mag (50 days)^-1. We use nebular spectroscopy and hydrodynamic modeling with the SNEC, MESA, and STELLA codes to infer that the progenitor of SN 2019hnl was a M_ZAMS ~ 11M_solar red supergiant which produced 0.047+-0.007M_solar of 56Ni in the explosion. As a part of our hydrodynamic modeling, we reduced hydrogen envelope mass by scaling the mass loss within the "Dutch" wind scheme to fit our light curve, showing that the progenitor of a relatively typical Type IIP SN may experience partial stripping during their evolution and establish massive (~0.2M_solar) CSM environments prior to core collapse. |
| title | SN 2019hnl: A Type IIP Supernova with a Partially Stripped, Low Mass Progenitor |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2509.03732 |