Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| author | Sit, Tawny Kasliwal, Mansi M. Tzanidakis, Anastasios De, Kishalay Fremling, Christoffer Sollerman, Jesper Gal-Yam, Avishay Miller, Adam A. Adams, Scott Aloisi, Robert Andreoni, Igor Chu, Matthew Cook, David Das, Kaustav Kashyap Dugas, Alison Groom, Steven L. Ho, Anna Y. Q. Karambelkar, Viraj Neill, James D. Masci, Frank J. Medford, Michael S. Purdum, Josiah Sharma, Yashvi Smith, Roger Stein, Robert Yan, Lin Yao, Yuhan Zhang, Chaoran |
| author_facet | Sit, Tawny Kasliwal, Mansi M. Tzanidakis, Anastasios De, Kishalay Fremling, Christoffer Sollerman, Jesper Gal-Yam, Avishay Miller, Adam A. Adams, Scott Aloisi, Robert Andreoni, Igor Chu, Matthew Cook, David Das, Kaustav Kashyap Dugas, Alison Groom, Steven L. Ho, Anna Y. Q. Karambelkar, Viraj Neill, James D. Masci, Frank J. Medford, Michael S. Purdum, Josiah Sharma, Yashvi Smith, Roger Stein, Robert Yan, Lin Yao, Yuhan Zhang, Chaoran |
| contents | SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and are broadly characterized by their long rises to peak. The Zwicky Transient Facility (ZTF) Census of the Local Universe (CLU) experiment aims to construct a spectroscopically complete sample of transients occurring in galaxies from the CLU galaxy catalog. We identify 13 long-rising (>40 days) Type II supernovae from the volume-limited CLU experiment during a 3.5 year period from June 2018 to December 2021, approximately doubling the previously known number of these events. We present photometric and spectroscopic data of these 13 events, finding peak r-band absolute magnitudes ranging from -15.6 to -17.5 mag and the tentative detection of Ba II lines in 9 events. Using our CLU sample of events, we derive a long-rising Type II supernova rate of $1.37^{+0.26}_{-0.30}\times10^{-6}$ Mpc$^{-3}$ yr$^{-1}$, $\approx$1.4% of the total core-collapse supernova rate. This is the first volumetric rate of these events estimated from a large, systematic, volume-limited experiment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_01109 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe Sit, Tawny Kasliwal, Mansi M. Tzanidakis, Anastasios De, Kishalay Fremling, Christoffer Sollerman, Jesper Gal-Yam, Avishay Miller, Adam A. Adams, Scott Aloisi, Robert Andreoni, Igor Chu, Matthew Cook, David Das, Kaustav Kashyap Dugas, Alison Groom, Steven L. Ho, Anna Y. Q. Karambelkar, Viraj Neill, James D. Masci, Frank J. Medford, Michael S. Purdum, Josiah Sharma, Yashvi Smith, Roger Stein, Robert Yan, Lin Yao, Yuhan Zhang, Chaoran High Energy Astrophysical Phenomena Solar and Stellar Astrophysics SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and are broadly characterized by their long rises to peak. The Zwicky Transient Facility (ZTF) Census of the Local Universe (CLU) experiment aims to construct a spectroscopically complete sample of transients occurring in galaxies from the CLU galaxy catalog. We identify 13 long-rising (>40 days) Type II supernovae from the volume-limited CLU experiment during a 3.5 year period from June 2018 to December 2021, approximately doubling the previously known number of these events. We present photometric and spectroscopic data of these 13 events, finding peak r-band absolute magnitudes ranging from -15.6 to -17.5 mag and the tentative detection of Ba II lines in 9 events. Using our CLU sample of events, we derive a long-rising Type II supernova rate of $1.37^{+0.26}_{-0.30}\times10^{-6}$ Mpc$^{-3}$ yr$^{-1}$, $\approx$1.4% of the total core-collapse supernova rate. This is the first volumetric rate of these events estimated from a large, systematic, volume-limited experiment. |
| title | Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2306.01109 |