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Observations of Typ...
Observations of Type Ia Supernova 2014J for Nearly 900 Days and Constraints on Its Progenitor System
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Li, Wenxiong (författare)
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Wang, Xiaofeng (författare)
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Hu, Maokai (författare)
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Yang, Yi (författare)
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Zhang, Jujia (författare)
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Mo, Jun (författare)
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Chen, Zhihao (författare)
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Zhang, Tianmeng (författare)
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Benetti, Stefano (författare)
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Cappellaro, Enrico (författare)
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Elias-Rosa, Nancy (författare)
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Isern, Jordi (författare)
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Morales-Garoffolo, Antonia (författare)
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Huang, Fang (författare)
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Ochner, Paolo (författare)
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Pastorello, Andrea (författare)
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Reguitti, Andrea (författare)
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- Tartaglia, Leonardo (författare)
- Stockholms universitet,Institutionen för astronomi
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Terreran, Giacomo (författare)
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Tomasella, Lina (författare)
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Wang, Lifan (författare)
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(creator_code:org_t)
- 2019-08-28
- 2019
- Engelska.
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Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 882:1
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- We present extensive ground-based and Hubble Space Telescope (HST) photometry of the highly reddened, very nearby SN Ia 2014J in M82, covering the phases from 9 days before to about 900 days after the B-band maximum. SN 2014J is similar to other normal SNe Ia near the maximum light, but it shows flux excess in the B band in the early nebular phase. This excess flux emission can be due to light scattering by some structures of circum stellar materials located at a few 10(17) cm, consistent with a single-degenerate progenitor system or a double-degenerate progenitor system with mass outflows in the final evolution or magnetically driven winds around the binary system. At t similar to +300 to similar to +500 days past the B-band maximum, the light curve of SN 2014J shows a faster decline relative to the Ni-56 decay. That feature can be attributed to the significant weakening of the emission features around [Fe III] lambda 4700 and [Fe II] lambda 5200 rather than the positron escape, as previously suggested. Analysis of the HST images taken at t > 600 days confirms that the luminosity of SN 2014J maintains a flat evolution at the very late phase. Fitting the late-time pseudobolometric light curve with radioactive decay of Ni-56, Ni-57, and Fe-55 isotopes, we obtain the mass ratio Ni-57/Ni-56 as 0.035 +/- 0.011, which is consistent with the corresponding value predicted from the 2D and 3D delayed-detonation models. Combined with early-time analysis, we propose that delayed detonation through the single-degenerate scenario is most likely favored for SN 2014J.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- supernovae: general
- supernovae: individual (SN 2014J)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Li, Wenxiong
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Wang, Xiaofeng
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Hu, Maokai
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Yang, Yi
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Zhang, Jujia
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Mo, Jun
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visa fler...
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Chen, Zhihao
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Zhang, Tianmeng
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Benetti, Stefano
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Cappellaro, Enri ...
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Elias-Rosa, Nanc ...
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Isern, Jordi
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Morales-Garoffol ...
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Huang, Fang
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Ochner, Paolo
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Pastorello, Andr ...
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Reguitti, Andrea
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Tartaglia, Leona ...
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Terreran, Giacom ...
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Tomasella, Lina
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Wang, Lifan
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
- Artiklar i publikationen
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Astrophysical Jo ...
- Av lärosätet
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Stockholms universitet