Observations of a Fast-expanding and UV-bright Type Ia Supernova SN 2013gs
文献类型：期刊论文
| 作者 | Zhang,Tianmeng1,2 ; Wang,Xiaofeng3; Zhao,Xulin4; Xu,Dong5; Reguitti,Andrea6; Zhang,Jujia7,8,9; Pastorello,Andrea10; Tomasella,Lina10; Ochner,Paolo6; Tartaglia,Leonardo11
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| 刊名 | The Astrophysical Journal
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| 出版日期 | 2019-02-06 |
| 卷号 | 872期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | supernovae: general supernovae: individual (SN 2013gs) |
| DOI | 10.3847/1538-4357/aafacd |
| 英文摘要 | Abstract In this paper, we present extensive optical and ultraviolet (UV) observations of the type Ia supernova (SN Ia) 2013gs discovered during the Tsinghua-NAOC Transient Survey. The photometric observations in the optical show that the light curves of SN 2013gs are similar to those of normal SNe Ia, with an absolute peak magnitude of MB?=??19.25?±?0.15 mag and a post-maximum decline rate Δm15(B)?=?1.00?±?0.05 mag. Gehrels Swift Ultra-Violet/Optical Telescope observations indicate that SN 2013gs shows unusually strong UV emission (especially in the uvw1 band) at around the maximum light (Muvw1?～??18.9 mag). The SN is characterized by relatively weak Fe ii iii absorptions at ～5000 ? in the early spectra and a larger expansion velocity (vSi?～?13,000 km s?1 around the maximum light) than the normal-velocity SNe Ia. We discuss the relation between the color and some observables, including Si ii velocity, line strength of Si ii λ6355 and Fe ii/iii lines, and Δm15(B). Compared to other fast-expanding SNe Ia, SN 2013gs exhibits Si and Fe absorption lines with similar strength and bluer color. We briefly discussed the origin of the observed UV dispersion of SNe Ia. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-872-1-AAFACD |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/24981]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China zhangtm@nao.cas.cn 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, People's Republic of China 3.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing, 100084, People's Republic of China 4.School of Science, Tianjin University of Technology, Tianjin, 300384, People's Republic of China 5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 6.Dipartimento di Fisica e Astronomia G. Galilei, Universita’ di Padova, Vicolo dell’Osservaotio 3, I-35122, Padova, Italy 7.Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650216, People's Republic of China 8.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China 9.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China 10.INAF-Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122, Padova, Italy |
| 推荐引用方式 GB/T 7714 | Zhang,Tianmeng,Wang,Xiaofeng,Zhao,Xulin,et al. Observations of a Fast-expanding and UV-bright Type Ia Supernova SN 2013gs[J]. The Astrophysical Journal,2019,872(1). |
| APA | Zhang,Tianmeng.,Wang,Xiaofeng.,Zhao,Xulin.,Xu,Dong.,Reguitti,Andrea.,...&Zou,Hu.(2019).Observations of a Fast-expanding and UV-bright Type Ia Supernova SN 2013gs.The Astrophysical Journal,872(1). |
| MLA | Zhang,Tianmeng,et al."Observations of a Fast-expanding and UV-bright Type Ia Supernova SN 2013gs".The Astrophysical Journal 872.1(2019). |
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来源：国家天文台
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