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A Systematic Study ...
A Systematic Study of Ia-CSM Supernovae from the ZTF Bright Transient Survey
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Sharma, Yashvi (author)
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- Sollerman, Jesper, 1968- (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Fremling, Christoffer (author)
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Kulkarni, Shrinivas R. (author)
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De Kishalay, Kishalay (author)
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Irani, Ido (author)
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- Schulze, Steve (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Strotjohann, Nora Linn (author)
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Gal-Yam, Avishay (author)
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Maguire, Kate (author)
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Perley, Daniel A. (author)
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Bellm, Eric C. (author)
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- Kool, Erik C. (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Brink, Thomas G. (author)
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Bruch, Rachel (author)
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Deckers, Maxime (author)
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Dekany, Richard (author)
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Dugas, Alison (author)
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Filippenko, Alexei V. (author)
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Goldwasser, Samantha (author)
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Graham, Matthew J. (author)
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Graham, Melissa L. (author)
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Groom, Steven L. (author)
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Hankins, Matt (author)
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Jencson, Jacob (author)
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- Pearson Johansson, Joel, 1984- (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Karambelkar, Viraj (author)
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Kasliwal, Mansi M. (author)
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Masci, Frank J. (author)
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Medford, Michael S. (author)
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Neill, James D. (author)
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Nir, Guy (author)
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Riddle, Reed L. (author)
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Rigault, Mickael (author)
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- Schweyer, Tassilo (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Terwel, Jacco H. (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. ; 948:1
- 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
Subject headings
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- Among the supernovae (SNe) that show strong interaction with a circumstellar medium (CSM), there is a rare subclass of Type Ia supernovae, SNe Ia-CSM, which show strong narrow hydrogen emission lines much like SNe IIn but on top of a diluted Type Ia spectrum. The only previous systematic study of this class identified 16 SNe Ia-CSM, eight historic and eight from the Palomar Transient Factory (PTF). Now using the successor survey to PTF, the Zwicky Transient Facility (ZTF), we have classified 12 additional SNe Ia-CSM through the systematic Bright Transient Survey (BTS). Consistent with previous studies, we find these SNe to have slowly evolving optical light curves with peak absolute magnitudes between -19.1 and -21, spectra having weak H ss and large Balmer ldecrements of similar to 7. Out of the 10 SNe from our sample observed by NEOWISE, nine have 3 sigma detections, with some SNe showing a reduction in the red wing of Ha, indicative of newly formed dust. We do not find our SN Ia-CSM sample to have a significantly different distribution of equivalent widths of He I.5876 than SNe IIn as observed in Silverman et al. The hosts tend to be late-type galaxies with recent star formation. We derive a rate estimate of 29+(27)(21) Gpc(-3) yr(-1) for SNe Ia-CSM, which is similar to 0.02%-0.2% of the SN Ia rate. We also identify six ambiguous SNe IIn/Ia-CSM in the BTS sample and including them gives an upper limit rate of 0.07%-0.8%. This work nearly doubles the sample of well-studied Ia-CSM objects in Silverman et al., increasing the total number to 28.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Unified Astronomy Thesaurus concepts: Supernovae (1668)
- Type Ia supernovae (1728)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Sharma, Yashvi
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Sollerman, Jespe ...
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Fremling, Christ ...
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Kulkarni, Shrini ...
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De Kishalay, Kis ...
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Irani, Ido
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show more...
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Schulze, Steve
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Strotjohann, Nor ...
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Gal-Yam, Avishay
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Maguire, Kate
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Perley, Daniel A ...
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Bellm, Eric C.
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Kool, Erik C.
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Brink, Thomas G.
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Bruch, Rachel
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Deckers, Maxime
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Dekany, Richard
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Dugas, Alison
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Filippenko, Alex ...
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Goldwasser, Sama ...
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Graham, Matthew ...
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Graham, Melissa ...
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Groom, Steven L.
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Hankins, Matt
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Jencson, Jacob
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Pearson Johansso ...
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Karambelkar, Vir ...
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Kasliwal, Mansi ...
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Masci, Frank J.
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Medford, Michael ...
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Neill, James D.
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Nir, Guy
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Riddle, Reed L.
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Rigault, Mickael
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Schweyer, Tassil ...
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Terwel, Jacco H.
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Yan, Lin
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Yang, Yi
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Yao, Yuhan
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Astrophysical Jo ...
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Stockholm University