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

doi:10.1051/0004-6361/202451048

	SN 2021wuf: A transitional type Ia supernova with a low-velocity gradient
	Zeng, Xiangyun 1,2; Li, Sai 1,2,3; Wang, Xiaofeng 3,4,5; Zheng, Sheng 1,2; Andrew Howell, D.6,7; Azaleee Bostroem, K.6,7; Mccully, Curtis 5,6; Esamdin, Ali8 ; Liu, Jialian 3; Iskandar, Abdusamatjan8,9 ; Zhang, Jujia 10,11,12; Bird, Sarah A.1,2; Zhang, Tianmeng 13; Wang, Lifan 14; Li, Yangyang 15; Zhang, Junjie 1,2
	2024-10-31
Source Publication	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
Volume	691 Pages:A90
Contribution Rank	7
Abstract	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.
Keyword	supernovae: individual: SN 2021wuf
DOI	10.1051/0004-6361/202451048
Indexed By	SCI
Language	英语
WOS Keyword	WHITE-DWARF MODELS ; LATE-TIME SPECTRA ; LIGHT CURVES ; SPECTROSCOPIC OBSERVATIONS ; CIRCUMSTELLAR MATERIAL ; OPTICAL OBSERVATIONS ; FACTORY OBSERVATIONS ; PROGENITOR SYSTEM ; EXPLOSION ; ULTRAVIOLET
Funding Project	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 Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:001346445300003
Publisher	EDP SCIENCES S A
Funding Organization	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
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/7118
Collection	光学天文与技术应用研究室_变星研究团组光学天文与技术应用研究室
Corresponding Author	Wang, Xiaofeng; Zheng, Sheng
Affiliation	1.China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China 2.China Three Gorges Univ, Coll Sci, Yichang 443000, Peoples R China 3.Beijing Acad Sci & Technol, Beijing Planetarium, Beijing 100044, Peoples R China 4.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China 5.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China 6.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA 7.Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA 8.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 9.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 10.Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650216, Peoples R China 11.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Peoples R China 12.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 13.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 14.Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamental, Dept Phys & Astron, 4242 TAMU, College Stn, TX 77843 USA 15.Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China
Recommended Citation 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.

Files in This Item:
File Name/Size	DocType	Version	Access	License
Zeng-2024-SN 2021wuf（12051KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	View Application Full Text

File name:	Zeng-2024-SN 2021wuf_ A transitional type Ia s.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

光学天文与技术应用研究室知识库