| SN 2022vqz: a peculiar subluminous Type Ia supernova with prominent early excess emission | |
Xi, Gaobo1; Wang, Xiaofeng1,2; Li, Gaici1; Liu, Jialian1; Yan, Shengyu1; Lin, Weili1; Zhao, Jieming1; Filippenko, Alexei V3; Zheng, WeiKang3; Brink, Thomas G3; Yang, Y3; Ehgamberdiev, Shuhrat A4,5; Mirzaqulov, Davron4; Reguitti, Andrea6,7; Pastorello, Andrea7; Tomasella, Lina7; Cai YZ(蔡永志)8,9,10 ; Zhang JJ(张居甲)8,9,10; Li, Zhitong11,12; Zhang, Tianmeng11; Sai, Hanna1; Chen, Zhihao1; Liu, Qichun1; Ma, Xiaoran1; Xiang, Danfeng1
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2023-12-23 | |
| 卷号 | 527期号:4页码:9957-9976 |
| DOI | 10.1093/mnras/stad3691 |
| 产权排序 | 第8完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | words: supernovae: general supernovae: individual: SN 2022vqz |
| 摘要 | We present extensive photometric and spectroscopic observations of the peculiar Type Ia supernova (SN Ia) 2022vqz. It shares many similarities with the SN 2002es-like SNe Ia, such as low luminosity (M-B,M-max = -18.11 +/- 0.16 mag) and moderate post-peak decline rate (Delta m(15,B) = 1.33 +/- 0.11 mag). The nickel mass synthesized in the explosion is estimated as 0.20 +/- 0.04 M-circle dot from the bolometric light curve, which is obviously lower than that of normal SNe Ia. SN 2022vqz is also characterized by slowly expanding ejecta, with Si II velocities persisting around 7000 km s(-1) since 16 d before peak brightness, unique among all known SNe Ia. While all of these properties imply a lower energy thermonuclear explosion that should leave a considerable amount of unburnt materials, the absent signature of unburnt carbon in spectra of SN 2022vqz is puzzling. A prominent early peak is clearly detected in the Asteroid Terrestrial-impact Last Alert System c- and o-band light curves and in the Zwicky Transient Facility gr-band data within days after the explosion. Possible mechanisms for the early peak are discussed, including the sub-Chandrasekhar-mass double-detonation model and interaction of SN ejecta with circumstellar material. We find that both models face some difficulties in replicating all aspects of the observed data. As an alternative, we propose a hybrid C-O-Ne white dwarf as the progenitor of SN 2022vqz; it can simultaneously reconcile the tension between low ejecta velocity and the absence of carbon. We further discuss the diversity of SN 2002es-like objects and their origin in the context of different scenarios. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[12288102]; National Natural Science Foundation of China (NSFC)[12033003]; National Natural Science Foundation of China (NSFC)[11633002]; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002]; Tencent Xplorer Prize; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; NSFC[12303054]; Christopher R. Redlich Fund; PRIN-INAF 2022, 'Shedding light on the nature of gap transients: from the observations to the models'; Uzbekistan's Ministry of Innovative Development[A-FA-2021-36]; Heising-Simons Foundation[12540303]; NASA[NN12AR55G]; NASA[80NSSC18K0284]; NASA[80NSSC18K1575]; Kepler/K2 grant[J1944/80NSSC19K0112]; Kepler/K2 grant[HST GO-15889]; STFC[ST/T000198/1]; STFC[ST/S006109/1] |
| 项目资助者 | National Natural Science Foundation of China (NSFC)[12288102, 12033003, 11633002] ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; NSFC[12303054] ; Christopher R. Redlich Fund ; PRIN-INAF 2022, 'Shedding light on the nature of gap transients: from the observations to the models' ; Uzbekistan's Ministry of Innovative Development[A-FA-2021-36] ; Heising-Simons Foundation[12540303] ; NASA[NN12AR55G, 80NSSC18K0284, 80NSSC18K1575] ; Kepler/K2 grant[J1944/80NSSC19K0112, HST GO-15889] ; STFC[ST/T000198/1, ST/S006109/1] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article |
| 出版者 | OXFORD UNIV PRESS |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:001186620300004 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | WHITE-DWARFS ; HUBBLE CONSTANT ; MASS ; LUMINOSITY ; TELESCOPE ; EVOLUTION ; SPECTRA ; 1991BG ; PROGENITORS ; UNIVERSE |
| EI入藏号 | 20240415448914 |
| EI主题词 | Supernovae |
| EI分类号 | 657.2 Extraterrestrial Physics and Stellar Phenomena - 804 Chemical Products Generally |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/26537 |
| 专题 | 南方基地 中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Physics Department and Tsinghua Center for Astrophysics, Tsinghua University, Beijing 100084, China; 2.Beijing Planetarium, Beijing Academy of Science and Technology, Beijing 100044, China; 3.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA; 4.Ulugh Beg Astronomical Institute, Uzbekistan Academy of Sciences, Tashkent 100052, Uzbekistan; 5.Department of Astronomy and Astrophysics, National University of Uzbekistan, Tashkent 100174, Uzbekistan; 6.INAF – Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate (LC), Italy; 7.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy; 8.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 9.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 10.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China; 11.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 12.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, China |
| 推荐引用方式 GB/T 7714 | Xi, Gaobo,Wang, Xiaofeng,Li, Gaici,et al. SN 2022vqz: a peculiar subluminous Type Ia supernova with prominent early excess emission[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,527(4):9957-9976. |
| APA | Xi, Gaobo.,Wang, Xiaofeng.,Li, Gaici.,Liu, Jialian.,Yan, Shengyu.,...&Xiang, Danfeng.(2023).SN 2022vqz: a peculiar subluminous Type Ia supernova with prominent early excess emission.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,527(4),9957-9976. |
| MLA | Xi, Gaobo,et al."SN 2022vqz: a peculiar subluminous Type Ia supernova with prominent early excess emission".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 527.4(2023):9957-9976. |
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