中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 丽江天文观测站（南方基地）
A LUMINOUS PECULIAR TYPE IA SUPERNOVA SN 2011HR: MORE LIKE SN 1991T OR SN 2007if?

文献类型：期刊论文

作者Zhang JJ(张居甲)1,2,3; Wang, Xiao-Feng3; Sasdelli, Michele4,5; Zhang, Tian-Meng6; Liu, Zheng-Wei7; Mazzali, Paolo A.4,5; Meng XC(孟祥存)1,2; Maeda, Keiichi8,9; Chen, Jun-Cheng3; Huang, Fang3
刊名ASTROPHYSICAL JOURNAL
出版日期2016-02-01
卷号817期号:2
ISSN号0004-637X
关键词galaxies: individual (NGC 2691) supernovae: general supernovae: individual (SN 2011hr, SN 1991T, SN 2007if)
产权排序第一完成单位
英文摘要Photometric and spectroscopic observations of a slowly declining, luminous Type Ia supernova (SN Ia) SN 2011hr in the starburst galaxy NGC 2691 are presented. SN. 2011hr is found to peak at MB = -19.84 +/- 0.40 mag, with a postmaximum decline rate Delta(m15)(B) = 0.92. +/- 0.03 mag. From the maximum-light bolometric luminosity, L = (2.30 +/- 0.90) x 10(43) erg s(-1), we estimate the mass of synthesized Ni-56 in SN 2011hr to be M(Ni-56) = 1.11 +/- 0.43M(circle dot). SN 2011hr appears more luminous than SN 1991T at around maximum light, and the absorption features from its intermediate-mass elements (IMEs) are noticeably weaker than those of the latter at similar phases. Spectral modeling suggests that SN 2011hr has IMEs of similar to 0.07 M-circle dot in the outer ejecta, which is much lower than the typical value of normal SNe Ia (i.e., 0.3-0.4 M-circle dot) and is also lower than the value of SN 1991T (i.e., similar to 0.18 M-circle dot). These results indicate that SN. 2011hr may arise from a Chandrasekhar-mass white dwarf progenitor that experienced a more efficient burning process in the explosion. Nevertheless, it is still possible that SN. 2011hr may serve as a transitional object connecting the SN 1991T-like SNe Ia with a superluminous subclass like SN 2007if given that the latter also shows very weak IMEs at all phases.
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]GRAVITATIONALLY CONFINED DETONATION ; NEAR-INFRARED OBSERVATIONS ; HIGH-VELOCITY FEATURES ; HUBBLE-SPACE-TELESCOPE ; LIGHT CURVES ; ABUNDANCE STRATIFICATION ; WHITE-DWARF ; SPECTROSCOPIC OBSERVATIONS ; ULTRAVIOLET OBSERVATIONS ; EXPLOSION
收录类别SCI
原文出处http://iopscience.iop.org/article/10.3847/0004-637X/817/2/114/meta
语种英语
WOS记录号WOS:000369437900031
源URL[http://ir.ynao.ac.cn/handle/114a53/9337]  
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 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China
4.Astrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK
5.Max-Planck Institute fur Astrophysics, D-85748 Garching, Germany
6.National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, Beijing 100012, China
7.Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121, Bonn, Germany
8.Department of Astronomy, Kyoto University, Kyoto, 606-8502, Japan
9.Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
10.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式
GB/T 7714		 Zhang JJ,Wang, Xiao-Feng,Sasdelli, Michele,et al. A LUMINOUS PECULIAR TYPE IA SUPERNOVA SN 2011HR: MORE LIKE SN 1991T OR SN 2007if?[J]. ASTROPHYSICAL JOURNAL,2016,817(2).
APA Zhang JJ.,Wang, Xiao-Feng.,Sasdelli, Michele.,Zhang, Tian-Meng.,Liu, Zheng-Wei.,...&Yi WM.(2016).A LUMINOUS PECULIAR TYPE IA SUPERNOVA SN 2011HR: MORE LIKE SN 1991T OR SN 2007if?.ASTROPHYSICAL JOURNAL,817(2).
MLA Zhang JJ,et al."A LUMINOUS PECULIAR TYPE IA SUPERNOVA SN 2011HR: MORE LIKE SN 1991T OR SN 2007if?".ASTROPHYSICAL JOURNAL 817.2(2016).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。