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SN 2014J in M82: new insights on the spectral diversity of Type Ia supernovae

文献类型：期刊论文

作者Zhang, Kaicheng2,3,4; Wang, Xiaofeng2,3; Zhang, Jujia5; Zhang, Tianmeng6,7,8,9; Benetti, S.10; Elias-Rosa, N.10; Huang, Fang11; Lin, Han2,3; Li, Linyi2,3; Li, Wenxiong2,3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018-11-01
卷号481期号:1页码:878-893
ISSN号0035-8711
关键词supernovae: general supernovae: individual (SN 2014J)
DOI10.1093/mnras/sty2289
英文摘要We present extensive spectroscopic observations for one of the closest Type Ia supernovae (SNe Ia), SN 2014J discovered in M82, ranging from 10.4 d before to 473.2 d after B-band maximum light. The diffuse interstellar band features detected in a high-resolution spectrum allow an estimate of line-of-sight extinction as A(v) similar to 1.9 +/- 0.6 mag. Spectroscopically, SN 2014J can be put into the high-velocity (HV) subgroup in Wang's classification with a velocity of Si II lambda 6355 at maximum light of upsilon(0) = 1.22 +/- 0.01 x 10(4) km s(-1) but has a low velocity gradient (LVG, following Benetti's classification) of (v) over bar = 41 +/- 2 km s(-1) d(-1), which is inconsistent with the trend that HV SNe Ia generally have larger velocity gradients. We find that the HV SNe Ia with LVGs tend to have relatively stronger Si III (at similar to 4400 angstrom) absorptions in early spectra, larger ratios of S II lambda 5468 to S II lambda 5640, and weaker Si II 5972 absorptions compared to their counterparts with similar velocities but high velocity gradients. This shows that the HV+ LVG subgroup of SNe Ia may have intrinsically higher photospheric temperature, which indicates that their progenitors may experience more complete burning in the explosions relative to the typical HV SNe Ia.
WOS关键词LIGHT CURVES ; EXPLOSION ; ULTRAVIOLET ; MODELS ; SPECTROSCOPY ; EXTINCTION ; LUMINOSITY ; DISTANCES ; BANDS ; DUST
资助项目Chinese Academy of Sciences ; People's Government of Yunnan Province ; Major State Basic Research Development Program[2013CB834903] ; National Natural Science Foundation of China (NSFC)[11178003] ; National Natural Science Foundation of China (NSFC)[11325313] ; National Natural Science Foundation of China (NSFC)[11633002] ; National Program on Key Research and Development Project[2016YFA0400803] ; China Scholarship Council (CSC)[201706210140] ; NSFC[11203034] ; NSFC[11403096] ; NSFC[11773067] ; Open Project Program of the Key Laboratory of Optical Astronomy ; National Astronomical Observatories ; Youth Innovation Promotion Association of the CAS[2018081] ; Western Light Youth Project ; Key Research Program of the CAS[KJZD-EW-M06] ; PRININAF 2014 ; German Research Foundation[TRR 33]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000449651400061
资助机构Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; Major State Basic Research Development Program ; Major State Basic Research Development Program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; NSFC ; NSFC ; Open Project Program of the Key Laboratory of Optical Astronomy ; Open Project Program of the Key Laboratory of Optical Astronomy ; National Astronomical Observatories ; National Astronomical Observatories ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Western Light Youth Project ; Western Light Youth Project ; Key Research Program of the CAS ; Key Research Program of the CAS ; PRININAF 2014 ; PRININAF 2014 ; German Research Foundation ; German Research Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; Major State Basic Research Development Program ; Major State Basic Research Development Program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; NSFC ; NSFC ; Open Project Program of the Key Laboratory of Optical Astronomy ; Open Project Program of the Key Laboratory of Optical Astronomy ; National Astronomical Observatories ; National Astronomical Observatories ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Western Light Youth Project ; Western Light Youth Project ; Key Research Program of the CAS ; Key Research Program of the CAS ; PRININAF 2014 ; PRININAF 2014 ; German Research Foundation ; German Research Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; Major State Basic Research Development Program ; Major State Basic Research Development Program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; NSFC ; NSFC ; Open Project Program of the Key Laboratory of Optical Astronomy ; Open Project Program of the Key Laboratory of Optical Astronomy ; National Astronomical Observatories ; National Astronomical Observatories ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Western Light Youth Project ; Western Light Youth Project ; Key Research Program of the CAS ; Key Research Program of the CAS ; PRININAF 2014 ; PRININAF 2014 ; German Research Foundation ; German Research Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; Major State Basic Research Development Program ; Major State Basic Research Development Program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; NSFC ; NSFC ; Open Project Program of the Key Laboratory of Optical Astronomy ; Open Project Program of the Key Laboratory of Optical Astronomy ; National Astronomical Observatories ; National Astronomical Observatories ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Western Light Youth Project ; Western Light Youth Project ; Key Research Program of the CAS ; Key Research Program of the CAS ; PRININAF 2014 ; PRININAF 2014 ; German Research Foundation ; German Research Foundation
源URL[http://ir.bao.ac.cn/handle/114a11/23381]  
专题中国科学院国家天文台
通讯作者Zhang, Kaicheng
作者单位1.Tianjin Univ Technol, Sch Sci, Tianjin 300384, Peoples R China
2.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
3.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China
4.Univ Texas Austin, Dept Astron, Austin, TX 78712 USA
5.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China
6.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China
7.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ China, Key Lab Opt Astron, Beijing 100012, Peoples R China
9.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China
10.INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
推荐引用方式
GB/T 7714		 Zhang, Kaicheng,Wang, Xiaofeng,Zhang, Jujia,et al. SN 2014J in M82: new insights on the spectral diversity of Type Ia supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,481(1):878-893.
APA Zhang, Kaicheng.,Wang, Xiaofeng.,Zhang, Jujia.,Zhang, Tianmeng.,Benetti, S..,...&Wu, Zhenyu.(2018).SN 2014J in M82: new insights on the spectral diversity of Type Ia supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,481(1),878-893.
MLA Zhang, Kaicheng,et al."SN 2014J in M82: new insights on the spectral diversity of Type Ia supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 481.1(2018):878-893.

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来源：国家天文台

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