SN 2013ej IN M74: A LUMINOUS AND FAST-DECLINING TYPE II-P SUPERNOVA

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	SN 2013ej IN M74: A LUMINOUS AND FAST-DECLINING TYPE II-P SUPERNOVA
	Huang, F 1,2; Wang, XF 2; Zhang JJ(张居甲)3,4,5 ; Brown, PJ 6; Zampieri, L 7; Pumo, ML 8; Zhang, TM 9; Chen, JC 2; Mo, J 2; Zhao, XL 2
刊名	ASTROPHYSICAL JOURNAL
	2015-07-01
卷号	807 期号:1
关键词	galaxies: individual (M74) supernovae: general supernovae: individual (SN 2013ej)
ISSN号	0004-637X
通讯作者	Huang, F (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.
产权排序	第三完成单位
英文摘要	We present extensive ultraviolet, optical, and near-infrared observations of the Type IIP supernova (SN IIP) 2013ej in the nearby spiral galaxy M74. The multicolor light curves, spanning from similar to 8-185 days after explosion, show that it has a higher peak luminosity (i.e., M-V similar to -17.83 mag at maximum light), a faster post-peak decline, and a shorter plateau phase (i.e., similar to 50 days) compared to the normal Type IIP SN 1999em. The mass of Ni-56 is estimated as 0.02 +/- 0.01 M-circle dot from the radioactive tail of the bolometric light curve. The spectral evolution of SN 2013ej is similar to that of SN 2004et and SN 2007od, but shows a larger expansion velocity (i.e., v(Fe II) similar to 4600 km s(-1) at t similar to 50 days) and broader line profiles. In the nebular phase, the emission of the H alpha line displays a double-peak structure, perhaps due to the asymmetric distribution of Ni-56 produced in the explosion. With the constraints from the main observables such as bolometric light curve, expansion velocity, and photospheric temperature of SN 2013ej, we performed hydrodynamical simulations of the explosion parameters, yielding the. total explosion energy as similar to 0.7x 10(51) erg, the. radius of the progenitor as similar to 600 R-circle dot, and the ejected mass as similar to 10.6M(circle dot). These results suggest that SN 2013ej likely arose from a red supergiant with a mass of 12-13M(circle dot) immediately before the explosion.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CORE-COLLAPSE SUPERNOVAE ; SWIFT ULTRAVIOLET/OPTICAL TELESCOPE ; EXPANDING PHOTOSPHERE METHOD ; LIGHT-CURVES ; OPTICAL-SPECTRA ; SPIRAL GALAXIES ; VIRGO CLUSTER ; NI-56 EJECTA ; PROGENITORS ; ASYMMETRY
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-637X/807/1/59/meta
语种	英语
WOS记录号	WOS:000358945200059
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5461]
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.Department of Astronomy, Beijing Normal University, Beijing 100875, China 2.Physics Department and Tsinghua Center for Astrophysics, Tsinghua University, Beijing 100084, China 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 5.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China 6.George P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Texas A. & M. University, Department of Physics and Astronomy, 4242 TAMU, College Station, TX 77843, USA 7.INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy 8.INAF-Osservatorio Astronomico di Palermo "Giuseppe S. Vaiana," Piazza del Parlamento 1, I-90134 Palermo, Italy 9.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
推荐引用方式 GB/T 7714	Huang, F,Wang, XF,Zhang JJ,et al. SN 2013ej IN M74: A LUMINOUS AND FAST-DECLINING TYPE II-P SUPERNOVA[J]. ASTROPHYSICAL JOURNAL,2015,807(1).
APA	Huang, F.,Wang, XF.,Zhang JJ.,Brown, PJ.,Zampieri, L.,...&Zhao, XL.(2015).SN 2013ej IN M74: A LUMINOUS AND FAST-DECLINING TYPE II-P SUPERNOVA.ASTROPHYSICAL JOURNAL,807(1).
MLA	Huang, F,et al."SN 2013ej IN M74: A LUMINOUS AND FAST-DECLINING TYPE II-P SUPERNOVA".ASTROPHYSICAL JOURNAL 807.1(2015).