Observations of Type Ia Supernova 2014J for Nearly 900 Days and Constraints on Its Progenitor System
文献类型：期刊论文
| 作者 | Li,Wenxiong1; Wang,Xiaofeng1; Hu,Maokai2; Yang,Yi3; Zhang,Jujia4,5; Mo,Jun1; Chen,Zhihao1; Zhang,Tianmeng6; Benetti,Stefano7; Cappellaro,Enrico7 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-08-28 |
| 卷号 | 882期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | supernovae: general supernovae: individual (SN 2014J) |
| DOI | 10.3847/1538-4357/ab2b49 |
| 英文摘要 | Abstract 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 circumstellar materials located at a few 1017 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?～?+300 to ～+500 days past the B-band maximum, the light curve of SN 2014J shows a faster decline relative to the 56Ni decay. That feature can be attributed to the significant weakening of the emission features around [Fe iii] λ4700 and [Fe ii] λ5200 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 56Ni, 57Ni, and 55Fe isotopes, we obtain the mass ratio 57Ni/56Ni 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. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-882-1-AB2B49 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/27264]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing, 100084, People’s Republic of China wang_xf@mail.tsinghua.edu.cn 2.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, People’s Republic of China 3.Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100, Israel 4.Yunnan Astronomical Observatory of China, Chinese Academy of Sciences, Kunming, 650011, People’s Republic of China 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China 6.National Astronomical Observatory of China, Chinese Academy of Sciences, Beijing, 100012, People’s Republic of China 7.INAF—Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy 8.Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans s/n, E-08193 Barcelona, Spain 9.Institut d’Estudis Espacials de Catalunya (IEEC), c/Gran Capitá 2-4, Edif. Nexus 201, E-08034 Barcelona, Spain 10.Department of Applied Physics, University of Cádiz, Campus of Puerto Real, E-11510, Cádiz, Spain |
| 推荐引用方式 GB/T 7714 | Li,Wenxiong,Wang,Xiaofeng,Hu,Maokai,et al. Observations of Type Ia Supernova 2014J for Nearly 900 Days and Constraints on Its Progenitor System[J]. The Astrophysical Journal,2019,882(1). |
| APA | Li,Wenxiong.,Wang,Xiaofeng.,Hu,Maokai.,Yang,Yi.,Zhang,Jujia.,...&Wang,Lifan.(2019).Observations of Type Ia Supernova 2014J for Nearly 900 Days and Constraints on Its Progenitor System.The Astrophysical Journal,882(1). |
| MLA | Li,Wenxiong,et al."Observations of Type Ia Supernova 2014J for Nearly 900 Days and Constraints on Its Progenitor System".The Astrophysical Journal 882.1(2019). |
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来源：紫金山天文台
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