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SN 2024abvb: A Type Icn Supernova in the Outskirts of Its Host Galaxy

文献类型：期刊论文

作者Hu, Maokai1; Yan, Shengyu1; Wang, Xiaofeng1; Iskandar, Abdusamatjan2,3; Zhang JJ(张居甲)4,5,6; Li LP(李丽萍)4,5,6; Esamdin, Ali2,3; Wang, Letian2; Wang, Lingzhi7,8; Filippenko, Alexei V.9,10
刊名ASTROPHYSICAL JOURNAL
出版日期2026-05-01
卷号1002期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/ae510c
产权排序第4完成单位
文献子类Article
英文摘要We present multiband photometric and spectroscopic observations of supernova (SN) 2024abvb, which exhibits early-time prominent photoionized narrow emission lines of C II superposed on a blue continuum. The absence of Balmer features indicates that the SN exploded within hydrogen-poor circumstellar matter (CSM). Together with the lack of explicit evidence of helium signatures, we tentatively identify SN 2024abvb as a Type Icn SN (SN Icn). After correcting for extinction, we estimate an r-band peak absolute magnitude of -19.7 +/- 0.1, placing SN 2024abvb in the luminous regime of SNe Icn. We adopted a hybrid model that accounts for both the energy released by the ejecta-CSM interaction and the radioactive decay of nickel synthesized in the SN ejecta to fit the light curve of SN 2024abvb. The best-fit model to the multiband light curves within the first similar to 40 days after explosion suggests the CSM, radioactive nickel, and ejecta masses to be 0.28-0.03+0.02M circle dot , <= 3.8 & times; 10-2 M circle dot, and 0.12-0.02+0.06M circle dot , respectively. Such a low ejecta mass indicates that the progenitor star of SN 2024abvb experienced a significant mass-stripping process, consistent with the hydrogen-poor and helium-poor spectral features. SN 2024abvb provides important insights into the physical origins of the rare subclass of SNe Icn.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词RICH CIRCUMSTELLAR MEDIUM ; IBN SUPERNOVA ; LIGHT CURVES ; MASSIVE STARS ; PROGENITOR CONSTRAINTS ; DIVERSE PROPERTIES ; ANALYTIC SOLUTIONS ; CORE-COLLAPSE ; EVOLUTION ; SPECTROSCOPY
资助项目MOST divided by National Natural Science Foundation of China (NSFC)[12288102]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001751373000001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)[12288102]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29178]  
专题云南天文台_丽江天文观测站（南方基地）
通讯作者Wang, Xiaofeng
作者单位1.Physics Department, Tsinghua University, Beijing 100084, People’s Republic of China; kaihukaihu123@mail.tsinghua.edu.cn, wang_xf@mail.tsinghua.edu.cn;
2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang, 830011, People’s Republic of China;
3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
5.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People’s Republic of China;
6.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
7.College of Science, Hainan Tropical Ocean University, Sanya, 572022, People’s Republic of China;
8.Chinese Academy of Sciences South America Center for Astronomy (CASSACA), National Astronomical Observatories, CAS, Beijing, People’s Republic of China;
9.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA;
10.Hagler Institute for Advanced Study, Texas A&M University, 3572 TAMU, College Station, TX 77843, USA;
推荐引用方式
GB/T 7714		 Hu, Maokai,Yan, Shengyu,Wang, Xiaofeng,et al. SN 2024abvb: A Type Icn Supernova in the Outskirts of Its Host Galaxy[J]. ASTROPHYSICAL JOURNAL,2026,1002(1).
APA Hu, Maokai.,Yan, Shengyu.,Wang, Xiaofeng.,Iskandar, Abdusamatjan.,张居甲.,...&Wang, Lifan.(2026).SN 2024abvb: A Type Icn Supernova in the Outskirts of Its Host Galaxy.ASTROPHYSICAL JOURNAL,1002(1).
MLA Hu, Maokai,et al."SN 2024abvb: A Type Icn Supernova in the Outskirts of Its Host Galaxy".ASTROPHYSICAL JOURNAL 1002.1(2026).

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