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SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient

文献类型：期刊论文

作者Zeng, Xiangyun7,8; Li, Sai6,7,8; Wang, Xiaofeng3,6,15; Zheng, Sheng7,8; Andrew Howell, D.2,14; Azaleee Bostroem, K.2,14; Mccully, Curtis14,15; Esamdin, Ali4; Liu, Jialian6; Iskandar, Abdusamatjan4,5
刊名ASTRONOMY & ASTROPHYSICS
出版日期2024-10-31
卷号691页码:A90
关键词supernovae: individual: SN 2021wuf
ISSN号0004-6361
DOI10.1051/0004-6361/202451048
产权排序7
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.
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 ; [12288102] ; [12033003]
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 ; High Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China ; Tencent Xplorer prize ; NSF ; NASA ; Asteroid Terrestrial-impact Last Alert System (ATLAS) project ; Asteroid Terrestrial-impact Last Alert System (ATLAS) ; Queen's University Belfast ; South African Astronomical Observatory
源URL[http://ir.xao.ac.cn/handle/45760611-7/7117]  
专题光学天文与技术应用研究室_变星研究团组
新疆天文台_光学天文与技术应用研究室
通讯作者Wang, Xiaofeng; Zheng, Sheng
作者单位1.Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamental, Dept Phys & Astron, 4242 TAMU, College Stn, TX 77843 USA
2.Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA
3.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
6.Beijing Acad Sci & Technol, Beijing Planetarium, Beijing 100044, Peoples R China
7.China Three Gorges Univ, Coll Sci, Yichang 443000, Peoples R China
8.China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China
9.Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650216, Peoples R China
10.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Peoples R China
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:A90.
APA Zeng, Xiangyun.,Li, Sai.,Wang, Xiaofeng.,Zheng, Sheng.,Andrew Howell, D..,...&Zhang, Junjie.(2024).SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient.ASTRONOMY & ASTROPHYSICS,691,A90.
MLA Zeng, Xiangyun,et al."SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient".ASTRONOMY & ASTROPHYSICS 691(2024):A90.

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来源：新疆天文台

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