SN 2019va: a Type IIP Supernova with Large Influence of Nickel-56 Decay on the Plateau-phase Light Curve | |
Zhang, Xinghan12; Wang, Xiaofeng11,12; Sai, Hanna12; Mo, Jun12; Nagy, A P10; Zhang, Jicheng9; Cai, Yongzhi12; Lin, Han12; Zhang JJ(张居甲)6,7,8; Baron, Eddie5 | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2022-05-19 | |
卷号 | 513期号:3页码:4556-4572 |
关键词 | supernovae: general supernovae: individual (SN 2019va) galaxies: individual (UGC 08577) |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stac1166 |
产权排序 | 第5完成单位 |
文献子类 | Article |
英文摘要 | We present multiband photometric and spectroscopic observations of the type II supernova, (SN) 2019va, which shows an unusually flat plateau-phase evolution in its V-band light curve. Its pseudo-bolometric light curve even shows a weak brightening towards the end of the plateau phase. These uncommon features are related to the influence of Ni-56 decay on the light curve during the plateau phase, when the SN emission is usually dominated by cooling of the envelope. The inferred Ni-56 mass of SN 2019va is 0.088 +/- 0.018 M-circle dot, which is significantly larger than most SNe II. To estimate the influence of Ni-56 decay on the plateau-phase light curve, we calculate the ratio (dubbed as eta(Ni)) between the integrated time-weighted energy from Ni-56 decay and that from envelope cooling within the plateau phase, obtaining a value of 0.8 for SN 2019va, which is the second largest value among SNe II that has been measured. After removing the influence of Ni-56 decay on the plateau-phase light curve, we found that the progenitor/explosion parameters derived for SN 2019va are more reasonable. In addition, SN 2019va is found to have weaker metal lines in its spectra compared to other SNe IIP at similar epochs, implying a low-metallicity progenitor, which is consistent with the metal-poor environment inferred from the host-galaxy spectrum. We further discuss the possible reasons that might lead to SN 2019va-like events. |
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 |
资助项目 | Chinese Academy of Sciences ; People's Government of Yunnan Province ; National Natural Science Foundation of China (NSFC)[12033003] ; 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] ; Scholar Program of Beijing Academy of Science and Technology[DZ: BS202002] ; Tencent Xplorer Prize ; China Manned Space Project[CSM-CSST-2021-A12] ; NKFIH/OTKA[PD-134434] ; China Postdoctoral Science Foundation[2021M691821] ; NSFC[11203034] ; NSFC[12173082] ; NSFC[11773067] ; Youth Innovation Promotion Association of the CAS[2018081] ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; NASA[NN12AR55G] ; NASA[80NSSC18K0284] ; NASA[80NSSC18K1575] ; STFC[ST/T000198/1] ; STFC[ST/S006109/1] ; Kepler/K2 grant[J1944/80NSSC19K0112] ; HST[GO-15889] |
WOS关键词 | P SUPERNOVA ; 1ST MONTH ; NGC 6946 ; 2017EAW ; EVOLUTION ; MODEL ; PHOTOMETRY ; EXPLOSION ; SPECTROSCOPY ; METALLICITY |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000798498000010 |
资助机构 | Chinese Academy of Sciences ; People's Government of Yunnan Province ; National Natural Science Foundation of China (NSFC)[12033003, 11633002, 11761141001] ; National Program on Key Research and Development Project[2016YFA0400803] ; Scholar Program of Beijing Academy of Science and Technology[DZ: BS202002] ; Tencent Xplorer Prize ; China Manned Space Project[CSM-CSST-2021-A12] ; NKFIH/OTKA[PD-134434] ; China Postdoctoral Science Foundation[2021M691821] ; NSFC[11203034, 12173082, 11773067] ; Youth Innovation Promotion Association of the CAS[2018081] ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; NASA[NN12AR55G, 80NSSC18K0284, 80NSSC18K1575] ; STFC[ST/T000198/1, ST/S006109/1] ; Kepler/K2 grant[J1944/80NSSC19K0112] ; HST[GO-15889] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25207] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Zhang, Xinghan; Wang, Xiaofeng |
作者单位 | 1.Department of Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China 2.DiRAC Institute, Department of Astronomy, University of Washington, Box 351580, U.W., Seattle, WA 98195, USA; 3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, China; 4.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 10101, China; 5.Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019, USA; 6.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China; 7.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 8.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 9.Department of Astronomy, Beijing Normal University, Beijing 100875, China; 10.Department of Optics and Quantum Electronics, University of Szeged, 6720 Szeged, Hungary; |
推荐引用方式 GB/T 7714 | Zhang, Xinghan,Wang, Xiaofeng,Sai, Hanna,et al. SN 2019va: a Type IIP Supernova with Large Influence of Nickel-56 Decay on the Plateau-phase Light Curve[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,513(3):4556-4572. |
APA | Zhang, Xinghan.,Wang, Xiaofeng.,Sai, Hanna.,Mo, Jun.,Nagy, A P.,...&Huang, Fang.(2022).SN 2019va: a Type IIP Supernova with Large Influence of Nickel-56 Decay on the Plateau-phase Light Curve.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,513(3),4556-4572. |
MLA | Zhang, Xinghan,et al."SN 2019va: a Type IIP Supernova with Large Influence of Nickel-56 Decay on the Plateau-phase Light Curve".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 513.3(2022):4556-4572. |
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