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Detection of [C i] Emission in Nebular Spectra of a Peculiar Type Ia Supernova 2022pul

文献类型：期刊论文

作者Liu, Jialian6; Wang, Xiaofeng5,6; Yang, Yi4,6; Filippenko, Alexei V.4; Brink, Thomas G.4; Zheng, WeiKang4; Zhang JJ(张居甲)1,2,3; Li, Gaici6; Yan, Shengyu6
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2025-03-20
卷号982期号:1
ISSN号2041-8205
DOI10.3847/2041-8213/adba61
产权排序第4完成单位
文献子类Article
英文摘要SN 2022pul gains special attention due to its possible origin as a super-Chandrasekhar-mass white dwarf (WD) explosion (also called a 03fg-like Type Ia supernova), which shows prominent [O i], [Ne i], and [Ca ii] lines in its late-time spectra taken at similar to+300 days after the time of peak brightness. In this Letter, we present new optical observations of this peculiar object, extending up to over 500 days after peak brightness. In particular, in the t similar to +515 days spectrum, we identified for the first time the presence of narrow emission from [C i] lambda lambda 9824, 9850, which appears asymmetric and quite similar to the accompanied [O i] lambda 6300 line in strength and profile. Based on the violent merger model that accounts well for previous observations but leaves little carbon in the center of the ejecta, this carbon line can be reproduced by increasing the degree of clumping in the ejecta and setting the carbon mass the same as that of oxygen (similar to 0.06 M circle dot) in the innermost region (less than or similar to 2000 km s-1). In principle, the central carbon could come from the secondary WD if it is ignited when hit by the shock wave of the explosion of the primary WD and explodes as a Ca-rich supernova, whereas pure deflagration of a super-Chandrasekhar-mass WD can account for such unburnt carbon more naturally.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词WHITE-DWARF ; THERMONUCLEAR EXPLOSIONS ; JWST OBSERVATIONS ; EVOLUTION ; CARBON ; LUMINOSITY ; PHOTOMETRY ; TELESCOPE ; PROGRAM ; SYSTEM
资助项目MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12288102]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12033003]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[11633002]; National Natural Science Foundation of China[CMS-CSST-2021-A12]; China Manned Space Project; Tencent Xplorer Prize; Christopher R. Redlich Fund; Briggs[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[2021YFA1600404]; National Key R&D Program of China[12173082]; NSFC[202201AT070069]; Yunnan Province Foundation; Top-notch Young Talents Program of Yunnan Province; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001450974200001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12288102, 12033003, 11633002] ; National Natural Science Foundation of China[CMS-CSST-2021-A12] ; China Manned Space Project ; Tencent Xplorer Prize ; Christopher R. Redlich Fund ; Briggs[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[2021YFA1600404] ; National Key R&D Program of China[12173082] ; NSFC[202201AT070069] ; Yunnan Province Foundation ; Top-notch Young Talents Program of Yunnan Province ; Chinese Academy of Sciences
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28222]  
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.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
4.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA;
5.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People's Republic of China;
6.Physics Department, Tsinghua University, Beijing 100084, People's Republic of China; liu-jl22@mails.tsinghua.edu.cn, wang_xf@mail.tsinghua.edu.cn;
推荐引用方式
GB/T 7714		 Liu, Jialian,Wang, Xiaofeng,Yang, Yi,et al. Detection of [C i] Emission in Nebular Spectra of a Peculiar Type Ia Supernova 2022pul[J]. ASTROPHYSICAL JOURNAL LETTERS,2025,982(1).
APA Liu, Jialian.,Wang, Xiaofeng.,Yang, Yi.,Filippenko, Alexei V..,Brink, Thomas G..,...&Yan, Shengyu.(2025).Detection of [C i] Emission in Nebular Spectra of a Peculiar Type Ia Supernova 2022pul.ASTROPHYSICAL JOURNAL LETTERS,982(1).
MLA Liu, Jialian,et al."Detection of [C i] Emission in Nebular Spectra of a Peculiar Type Ia Supernova 2022pul".ASTROPHYSICAL JOURNAL LETTERS 982.1(2025).

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