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SN 2022acko: a low-luminosity SNe IIP with signs of early circumstellar interaction

文献类型：期刊论文

作者Lin H(林含)1,2,3; Zhang JJ(张居甲)1,3,4; Wang, Xiaofeng5; Hu, Maokai5; Cha S(查帅)1,3; Xiang, Danfeng5,6; Li LP(李丽萍)1,3; Reguitti, Andrea7,8; Zhang, Xinghan9; Cai YZ(蔡永志)1,3,4
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2025-07
卷号540期号:3页码:2591-2611
关键词stars: evolution supernovae: general supernovae: individual (SN 2022acko)
ISSN号0035-8711
DOI10.1093/mnras/staf893
产权排序第1完成单位
文献子类Article
英文摘要We present optical-ultraviolet photometry and optical spectra for the type II supernova (SN) 2022acko. The spectroscopic observations span phases from similar to 1.5 to similar to 60 d after the explosion, while the light curve was observed up to similar to 300 d. The V-band peak is -15.5 +/- 0.3 mag, suggesting that SN 2022acko is a low-luminosity SN II (LLSN). The overall observed properties of SN 2022acko are consistent with those produced by a lower mass progenitor (MZAMS similar to 9-10 M-circle dot). The spectra at t=1.5 d and t=2.5 d exhibit a broad emission feature peaking near 4600 & Aring; (the 'ledge' feature), which we interpret as blueshifted He ii 4686 & Aring; lines arising from the ionized ejecta. Moreover, a possible flash-ionized (FI) emission line of H alpha (FWHM similar to 1100 km s(-1)) was superposed on the broad emission component of H alpha P-Cgyni profile in the t=1.5 d spectrum. Assuming an ejecta velocity of 12000 km s(-1), the rapid disappearance of this narrow H alpha emission line within 2 d suggests highly confined circumstellar material (CSM) within similar to 2x10(14)cm. Assuming a spherically symmetric CSM, the mass loss rate within this radius is estimated to be similar to 5x10(-4)M(circle dot) yr(-1) based on our hybrid light curve model. The early 'ledge' feature observed in SN 2022acko have also been observed in other SNe II, suggesting that early-phase circumstellar interaction is more common than previously thought.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词RED SUPERGIANT PROGENITOR ; CORE-COLLAPSE SUPERNOVAE ; LIGHT-CURVES ; MASS-LOSS ; SHOCK BREAKOUT ; P SUPERNOVAE ; NEARBY GALAXIES ; FOLLOW-UP ; 2005CS ; EXPLOSION
资助项目National Key R&D Program of China[2021YFA1600404]; National Key R&D Program of China[12473045]; National Key R&D Program of China[12033003]; National Key R&D Program of China[12494572]; National Natural Science Foundation of China; Innovative project of 'Caiyun Postdoctoral Project' of Yunnan Province[202401AU070063]; Yunnan Fundamental Research Projects; Topnotch Young Talents Program of Yunnan Province; Chinese Academy of Sciences[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[CMS-CSST-2021-A12]; China Manned Space Project[DZ:BS202002]; Scholar Program of Beijing Academy of Science and Technology; Tencent Xplorer Prize[GZB20240376]; Postdoctoral Fellowship Program of CPSF; Shuimu Tsinghua Scholar Program[12303054]; National Natural Science Foundation of China (NSFC)[24KJB160001]; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[928201/059]; Scientific research fund of Jiangsu Second Normal University[2022]; PRIN-INAF[3502Z202471015]; Natural Science Foundation of Xiamen, China; People's Government of Yunnan Province
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001506464300001
出版者OXFORD UNIV PRESS
资助机构National Key R&D Program of China[2021YFA1600404] ; National Key R&D Program of China[12473045, 12033003, 12494572] ; National Natural Science Foundation of China ; Innovative project of 'Caiyun Postdoctoral Project' of Yunnan Province[202401AU070063] ; Yunnan Fundamental Research Projects ; Topnotch Young Talents Program of Yunnan Province ; Chinese Academy of Sciences[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[CMS-CSST-2021-A12] ; China Manned Space Project[DZ:BS202002] ; Scholar Program of Beijing Academy of Science and Technology ; Tencent Xplorer Prize[GZB20240376] ; Postdoctoral Fellowship Program of CPSF ; Shuimu Tsinghua Scholar Program[12303054] ; National Natural Science Foundation of China (NSFC)[24KJB160001] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[928201/059] ; Scientific research fund of Jiangsu Second Normal University[2022] ; PRIN-INAF[3502Z202471015] ; Natural Science Foundation of Xiamen, China ; People's Government of Yunnan Province
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28367]  
专题云南天文台_丽江天文观测站（南方基地）
云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Zhang JJ(张居甲)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
2.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, China;
3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China;
4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
5.Physics Department, Tsinghua University, Beijing 100084, China;
6.Beijing Planetarium, Beijing Academy of Science and Technology, Beijing 100044, China;
7.INAF – Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy;
8.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy;
9.School of Physics and Electronic Information, Jiangsu Second Normal University, Nanjing, Jiangsu 211200, China;
10.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, China;
推荐引用方式
GB/T 7714		 Lin H,Zhang JJ,Wang, Xiaofeng,et al. SN 2022acko: a low-luminosity SNe IIP with signs of early circumstellar interaction[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2025,540(3):2591-2611.
APA 林含.,张居甲.,Wang, Xiaofeng.,Hu, Maokai.,查帅.,...&白金明.(2025).SN 2022acko: a low-luminosity SNe IIP with signs of early circumstellar interaction.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,540(3),2591-2611.
MLA 林含,et al."SN 2022acko: a low-luminosity SNe IIP with signs of early circumstellar interaction".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 540.3(2025):2591-2611.

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