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OPTICAL AND ULTRAVIOLET OBSERVATIONS OF THE NARROW-LINED TYPE Ia SN 2012fr IN NGC 1365
Zhang JJ(张居甲)1,2,3,4; Wang, XF3; Bai JM(白金明)1,4; Zhang, TM5,6; Wang B(王博)1,4; Liu ZW(柳正伟)1,4,7; Zhao, XL3; Chen, JC3; Zhang, JJ (reprint author), Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650011, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2014-07
卷号148期号:1页码:1-15
DOI10.1088/0004-6256/148/1/1
产权排序第1完成单位
收录类别SCI
关键词Supernovae: Individual (2012fr)
摘要Extensive optical and ultraviolet (UV) observations of the type Ia supernova (SN Ia) 2012fr are presented in this paper. It has a relatively high luminosity, with an absolute B-band peak magnitude of about -19.5 mag and a smaller post-maximum decline rate than normal SNe Ia (e.g., Delta m(15)(B) = 0.85 +/- 0.05 mag). Based on the UV and optical light curves, we derived that a Ni-56 mass of about 0.88 M-circle dot was synthesized in the explosion. The earlier spectra are characterized by noticeable high-velocity features of Si II lambda 6355 and Ca II with velocities in the range of similar to 22,000-25,000 km s(-1). At around the maximum light, these spectral features are dominated by the photospheric components which are noticeably narrower than normal SNe Ia. The post-maximum velocity of the photosphere remains almost constant at similar to 12,000 km s(-1) for about one month, reminiscent of the behavior of some luminous SNe Ia like SN 1991T. We propose that SN 2012fr may represent a subset of the SN 1991T-like SNe Ia viewed in a direction with a clumpy or shell-like structure of ejecta, in terms of a significant level of polarization reported in Maund et al. in 2013.
项目资助者Major State Basic Research Development Program [2013CB834903] ; National Natural Science Foundation of China (NSFC) [11073013, 11178003, 11325313, 11133006, 11361140347, 11322327, 11103072, 11203034] ; Foundation of Tsinghua University [2011Z02170] ; Strategic Priority Research Program "The emergence of Cosmological Structures" of the Chinese Academy of Sciences [XDB09000000] ; CAS ; People's Government of Yunnan Province
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2014-06-12
WOS记录号WOS:000338405900001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]HIGH-VELOCITY FEATURES ; LIGHT CURVES ; SUPERNOVA SPECTRA ; HUBBLE CONSTANT ; MAXIMUM LIGHT ; SWIFT ; TELESCOPE ; MODELS ; PROGENITOR ; PHOTOMETRY
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被引频次:25[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5444
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Zhang, JJ (reprint author), Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650011, China
2.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
3.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China
4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
5.National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, Beijing 100012, China
6.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
7.Argelander-Institut Für Astronomie, Auf dem Hügel 71, D-53121, Bonn, Germany
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Zhang JJ,Wang, XF,Bai JM,et al. OPTICAL AND ULTRAVIOLET OBSERVATIONS OF THE NARROW-LINED TYPE Ia SN 2012fr IN NGC 1365[J]. ASTRONOMICAL JOURNAL,2014,148(1):1-15.
APA Zhang JJ.,Wang, XF.,Bai JM.,Zhang, TM.,Wang B.,...&Zhang, JJ .(2014).OPTICAL AND ULTRAVIOLET OBSERVATIONS OF THE NARROW-LINED TYPE Ia SN 2012fr IN NGC 1365.ASTRONOMICAL JOURNAL,148(1),1-15.
MLA Zhang JJ,et al."OPTICAL AND ULTRAVIOLET OBSERVATIONS OF THE NARROW-LINED TYPE Ia SN 2012fr IN NGC 1365".ASTRONOMICAL JOURNAL 148.1(2014):1-15.
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