Probing the final-stage progenitor evolution for Type IIP Supernova 2017eaw in NGC 6946 | |
Rui, Liming1,2; Wang, Xiaofeng1,2; Mo, Jun1,2; Xiang, Danfeng1,2; Zhang JJ(张居甲)2,3; Maund, Justyn R.4; Gal-Yam, Avishy5; Wang, Lifan6; Zhang, Tianmeng7 | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2019-05-01 | |
卷号 | 485期号:2页码:1990-2000 |
关键词 | stars: evolution supernovae: general supernovae: individual: SN 2017eaw galaxies: individual: NGC 6946 |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stz503 |
产权排序 | 第2完成单位 |
文献子类 | Article |
英文摘要 | We presented a detailed analysis of progenitor properties of type IIP supernova 2017eaw in NGC 6946, based on the pre-explosion images and early-time observations obtained immediately after the explosion. An unusually red star, with M-F814W =-6.9 mag and mF606W -m(F814W) = 2.9 +/- 0.2 mag, can be identified at the SN position in the pre-discovery Hubble Space Telescope (HST) images taken in 2016. The observed spectral energy distribution of this star, covering the wavelength of 0.6-2.0 mu m, matches that of an M4-type red supergiant (RSG) with a temperature of about 3550 K. These results suggest that SN 2017eaw has a RSG progenitor with an initial mass of 12 +/- 2 M-circle dot. The absolute F814W-band magnitude of this progenitor star is found to evolve from -7.2 mag in 2004 to -6.9 mag in 2016. Such a dimming effect is, however, unpredicted for an RSG in its neon/oxygen burning phase when its luminosity should modestly increase. The spectrum of SN 2017eaw taken a few hours after discovery clearly shows a narrow H-alpha emission feature blueshifted by similar to 160 km s(-1). This narrow component disappeared in the spectrum taken two days later, suggesting the presence of a circumstellar material (CSM) shell (i.e. at a distance of < 2.1-4.3 x 10(14) cm). Combining the inferred distance with the expansion velocity of the CSM, we suggest that the progenitor of SN 2017eaw should have experienced violent mass-loss at about 1-2 yr prior to explosion, perhaps invoked by pulsational envelop ejection. This mechanism may help explain its luminosity decline in 2016 as well as the lack of detections of RSGs with relatively higher initial mass as progenitors of SNe IIP. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
资助项目 | National Natural Science Foundation of China (NSFC)[11325313] ; National Natural Science Foundation of China (NSFC)[11633002] ; National Natural Science Foundation of China (NSFC)[11761141001] ; National Program on Key Research and Development Project[2016YFA0400803] ; NSFC[11203034] ; NSFC[11403096] ; NSFC[11773067] ; Youth Innovation Promotion Association of the CAS[2018081] ; Western Light Youth Project ; Key Research Program of the CAS[KJZD-EW-M06] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Royal Society University Research Fellowship |
WOS关键词 | RED SUPERGIANTS ; SHOCK BREAKOUT ; MASSIVE STARS ; P SUPERNOVA ; RISE ; COOL |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000474886200036 |
资助机构 | National Natural Science Foundation of China (NSFC)[11325313, 11633002, 11761141001] ; National Program on Key Research and Development Project[2016YFA0400803] ; NSFC[11203034, 11403096, 11773067] ; Youth Innovation Promotion Association of the CAS[2018081] ; Western Light Youth Project ; Key Research Program of the CAS[KJZD-EW-M06] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Royal Society University Research Fellowship |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/20560] |
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 |
通讯作者 | Rui, Liming; Wang, Xiaofeng |
作者单位 | 1.Physics Department and Tsinghua Center for Astrophysics, Tsinghua University, Beijing 100084, China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 4.Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK 5.Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100, Israel 6.Physics and Astronomy Department, Texas A&M University, College Station, TX 77843, USA 7.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
推荐引用方式 GB/T 7714 | Rui, Liming,Wang, Xiaofeng,Mo, Jun,et al. Probing the final-stage progenitor evolution for Type IIP Supernova 2017eaw in NGC 6946[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,485(2):1990-2000. |
APA | Rui, Liming.,Wang, Xiaofeng.,Mo, Jun.,Xiang, Danfeng.,Zhang JJ.,...&Zhang, Tianmeng.(2019).Probing the final-stage progenitor evolution for Type IIP Supernova 2017eaw in NGC 6946.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,485(2),1990-2000. |
MLA | Rui, Liming,et al."Probing the final-stage progenitor evolution for Type IIP Supernova 2017eaw in NGC 6946".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 485.2(2019):1990-2000. |
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