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Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn Sne

文献类型：期刊论文

作者Pastorello, A.1; Wang, X. -F.2; Ciabattari, F.3; Bersier, D.4; Mazzali, P. A.4; Gao, X.5; Xu, Z.6; Zhang JJ(张居甲)7,8; Tokuoka, S.1; Benetti, S.1
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2016-02-11
卷号456期号:1页码:853-869
关键词stars: mass-loss supernovae: general supernovae: individual: SN 2006jc supernovae: individual: SN 2014av supernovae: individual: SN 2014bk stars: Wolf-Rayet
ISSN号0035-8711
产权排序第七完成单位
通讯作者Pastorello, A (reprint author), INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy.
英文摘要We present spectroscopic and photometric data of the Type Ibn supernova (SN) 2014av, discovered by the Xingming Observatory Sky Survey. Stringent pre-discovery detection limits indicate that the object was detected for the first time about 4 d after the explosion. A prompt follow-up campaign arranged by amateur astronomers allowed us to monitor the rising phase (lasting 10.6 d) and to accurately estimate the epoch of the maximum light, on 2014 April 23 (JD = 245 6771.1 +/- 1.2). The absolute magnitude of the SN at the maximum light is MR = -19.76 +/- 0.16. The post-peak light curve shows an initial fast decline lasting about three weeks, and is followed by a slower decline in all bands until the end of the monitoring campaign. The spectra are initially characterized by a hot continuum. Later on, the temperature declines and a number of lines become prominent mostly in emission. In particular, later spectra are dominated by strong and narrow emission features of He I typical of Type Ibn supernovae (SNe), although there is a clear signature of lines from heavier elements (in particular O I, Mg II and Ca II). A forest of relatively narrow Fe II lines is also detected showing P-Cygni profiles, with the absorption component blueshifted by about 1200 km s(-1). Another spectral feature often observed in interacting SNe, a strong blue pseudo-continuum, is seen in our latest spectra of SN 2014av. We discuss in this paper the physical parameters of SN 2014av in the context of the Type Ibn SN variety.
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 ; IIN SUPERNOVA ; DUST FORMATION ; LIGHT-CURVE ; 2006JC ; SPECTROSCOPY ; EMISSION ; ENVELOPE ; EXPLOSION ; SN-2006JC
收录类别SCI
原文出处http://mnras.oxfordjournals.org/content/456/1/853
语种英语
WOS记录号WOS:000368010000099
源URL[http://ir.ynao.ac.cn/handle/114a53/9408]  
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.INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
2.Physics Department and Tsinghua Center for Astrophysics, Tsinghua University, Beijing 100084, China
3.Osservatorio Astronomico di Monte Agliale, Via Cune Motrone, I-55023 Borgo a Mozzano, Lucca, Italy
4.Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK
5.Urumqi No.1 Senior High School, Urumqi 830002, China
6.Nanjing Putian Telecommunications Co., Nanjing 210012, China
7.Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650011, China
8.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
9.Fundación Galileo Galilei-INAF, Telescopio Nazionale Galileo, Rambla José Ana Fernández Pérez 7, E-38712 Breña Baja, Tenerife, Spain
10.Astronomical Department, Beijing Normal University, Beijing 100875, China
推荐引用方式
GB/T 7714		 Pastorello, A.,Wang, X. -F.,Ciabattari, F.,et al. Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn Sne[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,456(1):853-869.
APA Pastorello, A..,Wang, X. -F..,Ciabattari, F..,Bersier, D..,Mazzali, P. A..,...&Zhang JJ.(2016).Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn Sne.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,456(1),853-869.
MLA Pastorello, A.,et al."Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn Sne".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.1(2016):853-869.

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