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OPTICAL AND ULTRAVIOLET OBSERVATIONS OF A LOW-VELOCITY TYPE II PLATEAU SUPERNOVA 2013am IN M65

文献类型：期刊论文

作者Zhang JJ(张居甲)1,2,3; Wang, XF4; Mazzali, PA5; Bai JM(白金明)1,3; Zhang, TM6,7; Bersier, D5; Huang, F4,8; Fan YF(范玉峰)1,2,3; Mo, J4; Wang JG(王建国)1,3,9
刊名ASTROPHYSICAL JOURNAL
出版日期2014-12-10
卷号797期号:1
关键词supernovae: general supernovae: individual (SN 2013am)
ISSN号0004-637X
产权排序第一完成单位
通讯作者Zhang, JJ (reprint author), Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650216, Peoples R China.
英文摘要Optical and ultraviolet observations for the nearby type II plateau supernova (SN IIP) 2013am in the nearby spiral galaxy M65 are presented in this paper. The early spectra are characterized by relatively narrow P-Cygni features, with ejecta velocities much lower than observed in normal SNe IIP (i.e., similar to 2000 km s(-1) versus similar to 5000 km(-1) in the middle of the plateau phase). Moreover, prominent Ca ii absorptions are also detected in SN 2013am at relatively early phases. These spectral features are reminiscent of those seen in the low-velocity and low-luminosity SN IIP 2005cs. However, SN 2013am exhibits different photometric properties, having shorter plateau phases and brighter light curve tails if compared to SN 2005cs. Adopting R-V = 3.1 and a mean value of total reddening derived from the photometric and spectroscopic methods (i.e., E(B - V) = 0.55 +/- 0.19 mag), we find that SN 2013am may have reached an absolute V-band peak magnitude of -15.83 +/- 0.71 mag and produced an Ni-56 mass of 0.016(0.006)(+0.010) M-circle dot in the explosion. These parameters are close to those derived for SN 2008in and SN 2009N, which have been regarded as "gap-filler" objects linking the faint SNe IIP to the normal ones. This indicates that some low-velocity SNe IIP may not necessarily result from the low-energetic explosions. The low expansion velocities could be due to a lower metallicity of the progenitor stars, a larger envelope mass ejected in the explosion, or the effect of viewing angle where these SNe were observed at an angle away from the polar direction.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]CORE-COLLAPSE SUPERNOVAE ; EXPANDING PHOTOSPHERE METHOD ; P SUPERNOVAE ; IA SUPERNOVAE ; LIGHT-CURVES ; SN 2005CS ; 1999EM ; SWIFT ; PHOTOMETRY ; EVOLUTION
收录类别SCI
原文出处http://iopscience.iop.org/article/10.1088/0004-637X/797/1/5/meta
语种英语
WOS记录号WOS:000345915000005
源URL[http://ir.ynao.ac.cn/handle/114a53/5433]  
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
作者单位1.Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650216, China
2.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
4.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China
5.Astrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK
6.National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, Beijing 100012, China
7.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
8.Astronomy Department, Beijing Normal University, Beijing 100875, China
9.Key Laboratory for Research in Galaxies and Cosmology, Chinese Academy of Science, 96 JinZhai Road, Hefei 230026, Anhui, China
10.Department of Physics, Yale University, New Haven, CT 06520-8121, USA
推荐引用方式
GB/T 7714		 Zhang JJ,Wang, XF,Mazzali, PA,et al. OPTICAL AND ULTRAVIOLET OBSERVATIONS OF A LOW-VELOCITY TYPE II PLATEAU SUPERNOVA 2013am IN M65[J]. ASTROPHYSICAL JOURNAL,2014,797(1).
APA Zhang JJ.,Wang, XF.,Mazzali, PA.,Bai JM.,Zhang, TM.,...&Walker, ES.(2014).OPTICAL AND ULTRAVIOLET OBSERVATIONS OF A LOW-VELOCITY TYPE II PLATEAU SUPERNOVA 2013am IN M65.ASTROPHYSICAL JOURNAL,797(1).
MLA Zhang JJ,et al."OPTICAL AND ULTRAVIOLET OBSERVATIONS OF A LOW-VELOCITY TYPE II PLATEAU SUPERNOVA 2013am IN M65".ASTROPHYSICAL JOURNAL 797.1(2014).

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来源：云南天文台

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