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Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe
- Sit, Tawny (author)
- Kasliwal, Mansi M. (author)
- Tzanidakis, Anastasios (author)
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- De, Kishalay (author)
- Fremling, Christoffer (author)
- Gal-Yam, Avishay (author)
- Miller, Adam A. (author)
- Adams, Scott (author)
- Aloisi, Robert (author)
- Andreoni, Igor (author)
- Chu, Matthew (author)
- Cook, David (author)
- Das, Kaustav Kashyap (author)
- Dugas, Alison (author)
- Groom, Steven L. (author)
- Ho, Anna Y. Q. (author)
- Karambelkar, Viraj (author)
- Neill, James D. (author)
- Masci, Frank J. (author)
- Medford, Michael S. (author)
- Purdum, Josiah (author)
- Sharma, Yashvi (author)
- Smith, Roger (author)
- Stein, Robert (author)
- Yan, Lin (author)
- Yao, Yuhan (author)
- Zhang, Chaoran (author)
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- (creator_code:org_t)
- 2023
- 2023
- English.
- In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 959:2
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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 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 yr period from 2018 June to 2021 December, 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 nine events. Using our CLU sample of events, we derive a long-rising Type II supernova rate of Mpc−3 yr−1, ≈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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Core-collapse supernovae
- Supernovae
- Type II supernovae
- Galaxies
- Sky surveys
- Surveys
- Spectroscopy
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Andreoni, Igor
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- Groom, Steven L.
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- Smith, Roger
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