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SN 2017ckj: A linearly declining type IIb supernova with a relatively massive hydrogen envelope

文献类型：期刊论文

作者Li LH(李陆翰)6,15,16; Benetti, S.19; Cai YZ(蔡永志)6,16; Wang B(王博)6,16; Pastorello, A.19; Elias, N.19,20; Reguitti, A.11,19; Borsato, L.19; Cappellaro, E.19; Fiore, A.19,22
刊名ASTRONOMY & ASTROPHYSICS
出版日期2025-12-12
卷号704
关键词circumstellar matter supernovae: general supernovae: individual: SN 2017ckj
ISSN号0004-6361
DOI10.1051/0004-6361/202556873
产权排序第1完成单位
文献子类Article
英文摘要We present optical observations of the type IIb supernova (SN) 2017ckj, covering approximately 180 days after the explosion. Its early-time multi-band light curves display no clear evidence of a shock-cooling tail, resembling the behaviour of SN 2008ax. The V-band light curve exhibits a short rise time of about 5 days and reaches an absolute fitted peak magnitude of M-V = -18.49 +/- 0.18 mag. The late-time multi-band light curves reveal a linear decline. We modelled the bolometric light curve of SN 2017ckj to constrain the progenitor and the explosion parameters. We estimated a total mass of Ni-56 synthesised by SN 2017ckj of M-Ni = 0.21(-0.03)(+0.05) M-circle dot, with a massive H-rich envelope of M-env = 0.4(-0.1)(+0.1) M-circle dot. Both the Ni-56 mass and the envelope mass of SN 2017ckj are higher than those of typical SNe IIb, in agreement with its peculiar light curve evolution. The early-time spectra of SN 2017ckj are dominated by a blue continuum, accompanied by narrow H alpha and He II emission lines. The earliest spectrum exhibits flash ionisation features, from which we estimated a progenitor mass-loss rate of similar to 3 x 10(-4) M-circle dot yr(-1). At later epochs, the spectra develop broad P-Cygni profiles and become increasingly similar to those of SNe IIb, especially SN 2018gk. The late-time spectrum at around 139 days does not show a distinct decline in the strength of its H alpha emission profile, also indicating a relatively massive envelope of its progenitor. Aside from the H alpha feature, the nebular spectrum exhibits prominent emission lines of O I, Ca II, [Ca II], and Mg I], which are consistent with the prototypical SN 1993J.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词YELLOW SUPERGIANT PROGENITOR ; EARLY LIGHT-CURVE ; CIRCUMSTELLAR INTERACTION ; OPTICAL SPECTROSCOPY ; SPECTRAL EVOLUTION ; UBVRI PHOTOMETRY ; LATE EMISSION ; DATA RELEASE ; STARS ; IB
资助项目National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12225304]; National Natural Science Foundation of China[12090040]; National Natural Science Foundation of China[12090043]; National Natural Science Foundation of China[12303054]; National Natural Science Foundation of China[12473032]; National Key Research and Development Program of China[2021YFA1600404]; National Key Research and Development Program of China[2024YFA1611603]; Western Light Project of CAS[XBZG-ZDSYS-202117]; Yunnan Revitalization Talent Support Program (Yunling Scholar Project); Yunnan Revitalization Talent Support Program-Young Talent project; Yunnan Fundamental Research Projects[202201BC070003]; Yunnan Fundamental Research Projects[202401AU070063]; Yunnan Fundamental Research Projects[202501AS070078]; Yunnan Fundamental Research Projects[202501AW070001]; Yunnan Fundamental Research Projects[202501AS070005]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; PRIN-INAF; GRAWITA Large Program Grant; European Union - NextGenerationEU; Vilho, Yrjoe and Kalle Vaeisaelae Foundation of the Finnish Academy of Science and Letters; Research Council of Finland[360274]; Research Council of Finland[350458]; Danish National Research Foundation[DNRF140]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001638047200010
出版者EDP SCIENCES S A
资助机构National Natural Science Foundation of China[12288102, 12225304, 12090040, 12090043, 12303054, 12473032] ; National Key Research and Development Program of China[2021YFA1600404, 2024YFA1611603] ; Western Light Project of CAS[XBZG-ZDSYS-202117] ; Yunnan Revitalization Talent Support Program (Yunling Scholar Project) ; Yunnan Revitalization Talent Support Program-Young Talent project ; Yunnan Fundamental Research Projects[202201BC070003, 202401AU070063, 202501AS070078, 202501AW070001, 202501AS070005] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; PRIN-INAF ; GRAWITA Large Program Grant ; European Union - NextGenerationEU ; Vilho, Yrjoe and Kalle Vaeisaelae Foundation of the Finnish Academy of Science and Letters ; Research Council of Finland[360274, 350458] ; Danish National Research Foundation[DNRF140]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28804]  
专题云南天文台_丽江天文观测站（南方基地）
通讯作者Cai YZ(蔡永志); Wang B(王博)
作者单位1.Fabra Observatory, Royal Academy of Sciences and Arts of Barcelona (RACAB), 08001 Barcelona, Spain;
2.Institute for Space Studies of Catalonia (IEEC), Campus UPC, 08860 Castelldefels (Barcelona), Spain;
3.Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Vesilinnantie 5, Quantum, 20014 Turku, Finland;
4.The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, SE-10691 Stockholm, Sweden;
5.Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark;
6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
7.Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UK;
8.INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131 Napoli, Italy;
9.Niels Bohr Institute, University of Copenhagen, Jagtvej 128, 2200 København N, Denmark;
10.Cosmic Dawn Center (DAWN);
推荐引用方式
GB/T 7714		 Li LH,Benetti, S.,Cai YZ,et al. SN 2017ckj: A linearly declining type IIb supernova with a relatively massive hydrogen envelope[J]. ASTRONOMY & ASTROPHYSICS,2025,704.
APA 李陆翰.,Benetti, S..,蔡永志.,王博.,Pastorello, A..,...&吴程远.(2025).SN 2017ckj: A linearly declining type IIb supernova with a relatively massive hydrogen envelope.ASTRONOMY & ASTROPHYSICS,704.
MLA 李陆翰,et al."SN 2017ckj: A linearly declining type IIb supernova with a relatively massive hydrogen envelope".ASTRONOMY & ASTROPHYSICS 704(2025).

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来源：云南天文台

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