SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient
文献类型：期刊论文
| 作者 | Zeng, Xiangyun13,14; Li, Sai12,13,14; Wang, Xiaofeng11,12; Zheng, Sheng13,14; Howell, D. Andrew9,10; Bostroem, K. Azaleee9,10; McCully, Curtis9,10; Esamdin, Ali8; Liu, Jialian12; Iskandar, Abdusamatjan7,8 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2024-10-31 |
| 卷号 | 691 |
| 关键词 | supernovae: individual: SN 2021wuf |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202451048 |
| 产权排序 | 第9完成单位 |
| 文献子类 | Article |
| 英文摘要 | In this paper, we present an extensive analysis of SN 2021 wuf, a transition between Ia-norm and SN 1991T-like supernovae, which exploded at the periphery of the tidal bridge between the pair galaxy NGC 6500 and NGC 6501, at a redshift of z = 0.01. Our observations, ranging from -21 to +276 days relative to the B-band maximum light, reveal that SN 2021wuf exhibits properties akin to normal SNe Ia, with a peak absolute magnitude of M-max(B) similar to - 19.49 +/- 0.10 mag and a post-peak decline rate of Delta m(15)(B) similar to 1.11 +/- 0.06 mag. The peak bolometric luminosity of this SN is estimated as 1.58 x 10(43) erg s(-1), corresponding to a Ni-56 mass of M-Ni similar to 0.64 +/- 0.05 M-circle dot. The spectral features, including high-velocity Si II lambda 6355 lines, a plateau in the Si II lambda 6355 velocity evolution and the nickel-to-iron ratio in the nebular phase, suggest a potential pulsating delayed detonation mechanism. The absence of intermediate-mass elements in the early phase and the high photospheric temperature, as inferred from the line-strength ratio of Si II lambda 5972 to Si II lambda 6355 (named as R(Si II)), further support this classification. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | WHITE-DWARF MODELS ; LATE-TIME SPECTRA ; LIGHT CURVES ; SPECTROSCOPIC OBSERVATIONS ; CIRCUMSTELLAR MATERIAL ; OPTICAL OBSERVATIONS ; FACTORY OBSERVATIONS ; PROGENITOR SYSTEM ; EXPLOSION ; ULTRAVIOLET |
| 资助项目 | National Natural Science Foundation of China; National Key R&D program of China for Intergovernmental Scientific and TechnologicalInnovation Cooperation Project[2022YFE0126200]; High Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China; Tencent Xplorer prize; NSF[AST-1911225]; NSF[AST-1911151]; NASA[NN12AR55G]; NASA[80NSSC18K0284]; NASA[80NSSC18K1575]; Asteroid Terrestrial-impact Last Alert System (ATLAS) project; Asteroid Terrestrial-impact Last Alert System (ATLAS); Queen's University Belfast; South African Astronomical Observatory; |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001346445300003 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D program of China for Intergovernmental Scientific and TechnologicalInnovation Cooperation Project[2022YFE0126200] ; High Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China ; Tencent Xplorer prize ; NSF[AST-1911225, AST-1911151] ; NASA[NN12AR55G, 80NSSC18K0284, 80NSSC18K1575] ; Asteroid Terrestrial-impact Last Alert System (ATLAS) project ; Asteroid Terrestrial-impact Last Alert System (ATLAS) ; Queen's University Belfast ; South African Astronomical Observatory ; [12288102] ; [12033003] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27668]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Shanghai Key Lab for Astrophysics, Shanghai Normal University, Shanghai 200234, People’s Republic of China 2.George P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Texas A&M University, Department of Physics and Astronomy, 4242 TAMU, College Station, TX 77843, USA; 3.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China; 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China; 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 6.Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 7.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; 8.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, People’s Republic of China; 9.Las Cumbres Observatory, 6740 Cortona Drive, Suite 102, Goleta, CA 93117-5575, USA; 10.Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA; |
| 推荐引用方式 GB/T 7714 | Zeng, Xiangyun,Li, Sai,Wang, Xiaofeng,et al. SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient[J]. ASTRONOMY & ASTROPHYSICS,2024,691. |
| APA | Zeng, Xiangyun.,Li, Sai.,Wang, Xiaofeng.,Zheng, Sheng.,Howell, D. Andrew.,...&Zhang, Junjie.(2024).SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient.ASTRONOMY & ASTROPHYSICS,691. |
| MLA | Zeng, Xiangyun,et al."SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient".ASTRONOMY & ASTROPHYSICS 691(2024). |
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来源：云南天文台
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