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Probing the Low-mas...
Probing the Low-mass End of Core-collapse Supernovae Using a Sample of Strongly-stripped Calcium-rich Type IIb Supernovae from the Zwicky Transient Facility
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Das, Kaustav K. (author)
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Kasliwal, Mansi M. (author)
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Fremling, Christoffer (author)
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- Yang, Sheng, 1990- (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Schulze, Steve, 1980- (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum
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- Sollerman, Jesper, 1968- (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Sit, Tawny (author)
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De, Kishalay (author)
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Tzanidakis, Anastasios (author)
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Perley, Daniel A. (author)
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Anand, Shreya (author)
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Andreoni, Igor (author)
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- Barbarino, Cristina (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Brudge, K. (author)
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Drake, Andrew (author)
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Gal-Yam, Avishay (author)
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Laher, Russ R. (author)
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Karambelkar, Viraj (author)
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Kulkarni, S. R. (author)
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Masci, Frank J. (author)
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Medford, Michael S. (author)
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Polin, Abigail (author)
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Reedy, Harrison (author)
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Riddle, Reed (author)
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Sharma, Yashvi (author)
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Smith, Roger (author)
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Yan, Lin (author)
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Yang, Yi (author)
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Yao, Yuhan (author)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 959:1
- Related links:
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https://doi.org/10.3...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
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- The fate of stars in the zero-age main-sequence (ZAMS) range ≈8–12 M⊙ is unclear. They could evolve to form white dwarfs or explode as electron-capture supernovae (SNe) or iron core-collapse SNe (CCSNe). Even though the initial mass function indicates that this mass range should account for over 40% of all CCSN progenitors, few have been observationally confirmed, likely due to the faintness and rapid evolution of some of these transients. In this paper, we present a sample of nine Ca-rich/O-poor Type IIb SNe detected by the Zwicky Transient Facility with progenitors likely in this mass range. These sources have a [Ca ii] λλ7291, 7324/[O i] λλ6300, 6364 flux ratio of ≳2 in their nebular spectra. Comparing the measured [O i] luminosity (≲1039 erg s−1) and derived oxygen mass (≈0.01 M⊙) with theoretical models, we infer that the progenitor ZAMS mass for these explosions is less than 12 M⊙. The ejecta properties (Mej ≲ 1 M⊙ and Ekin ∼ 1050 erg) are also consistent. The low ejecta mass of these sources indicates a class of strongly-stripped SNe that is a transition between the regular stripped-envelope SNe and ultra-stripped SNe. The progenitor could be stripped by a main-sequence companion and result in the formation of a neutron star−main sequence binary. Such binaries have been suggested to be progenitors of neutron star−white dwarf systems that could merge within a Hubble time and be detectable with LISA.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Das, Kaustav K.
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Kasliwal, Mansi ...
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Fremling, Christ ...
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Yang, Sheng, 199 ...
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Schulze, Steve, ...
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Sollerman, Jespe ...
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show more...
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Sit, Tawny
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De, Kishalay
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Tzanidakis, Anas ...
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Perley, Daniel A ...
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Anand, Shreya
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Andreoni, Igor
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Barbarino, Crist ...
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Brudge, K.
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Drake, Andrew
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Gal-Yam, Avishay
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Laher, Russ R.
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Karambelkar, Vir ...
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Kulkarni, S. R.
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Masci, Frank J.
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Medford, Michael ...
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Polin, Abigail
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Reedy, Harrison
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Riddle, Reed
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Sharma, Yashvi
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Smith, Roger
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Yan, Lin
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Yang, Yi
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Yao, Yuhan
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Stockholm University