On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc

doi:10.1093/mnras/stz1914

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	On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc
	Kumar, Brajesh 1; Eswaraiah, Chakali 1,2; Singh, Avinash 1,3; Sahu, D. K.1; Anupama, G. C.1; Kawabata, K. S.4; Yamanaka, Masayuki 4,5; Otsubo, Ikki 6; Pandey, S. B.7; Nakaoka, Tatsuya 6
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-09-01
卷号	488 期号:3 页码:3089-3099
关键词	techniques: photometric techniques: polarimetric techniques: spectroscopic supernovae: general supernovae: individual: SN 2017hcc
ISSN号	0035-8711
DOI	10.1093/mnras/stz1914
英文摘要	We present the results based on photometric (Swift UVOT), broad-band polarimetric (V and R bands) and optical spectroscopic observations of the Type IIn supernova (SN) 2017hcc. Our study is supplemented with spectropolarimetric data available in literature for this event. The post-peak light-curve evolution is slow (similar to 0.2 mag 100 d(-1) in b band). The spectrum of similar to+27 d shows a blue continuum with narrow emission lines, typical of a Type IIn SN. Archival polarization data along with the Gaia DR2 distances have been utilized to evaluate the interstellar polarization (ISP) towards the SN direction which is found to be P-ISP = 0.17 +/- 0.02 per cent and theta ISP = 140 degrees +/- 3 degrees. To extract the intrinsic polarization of SN 2017hcc, both the observed and the literature polarization measurements were corrected for ISP. We noticed a significant decline of similar to 3.5 per cent (V band) in the intrinsic level of polarization spanning a period of similar to 2 months. In contrast, the intrinsic polarization angles remain nearly constant at all epochs. Our study indicates a substantial variation in the degree of asymmetry in either the ejecta and/or the surrounding medium of SN 2017hcc. We also estimate a mass-loss rate of (M) over dot = 0.12 M-circle dot yr(-1) (for v(w) = 20 km s(-1)) which suggests that the progenitor of SN 2017hcc is most likely a luminous blue variable.
资助项目	Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India[PDF/2016/001563] ; National Key R&D Program of China[2017YFA0402600] ; International Partnership Program of Chinese Academy of Sciences[114A11KYSB20160008] ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; DST/JSPS grant[DST/INT/JSPS/P/281/2018] ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G)
WOS关键词	CIRCUMSTELLAR ENVIRONMENT ; 2012 OUTBURST ; SPECTROPOLARIMETRY ; 2009IP ; CORE ; SPECTRA ; LIGHT ; STAR ; SPECTROSCOPY ; ASPHERICITY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000485158400011
资助机构	Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; DST/JSPS grant ; DST/JSPS grant ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; DST/JSPS grant ; DST/JSPS grant ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; DST/JSPS grant ; DST/JSPS grant ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; Science and Engineering Research Board (SERB) under the Department of Science and Technology, Govt. of India ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; BRICS grant DST/IMRCD/BRICS/PilotCall1/MuMeSTU/2017(G) ; DST/JSPS grant ; DST/JSPS grant ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G) ; BRICS grant DST/IMRCD/BRICS/Pilotcall/ProFCheap/2017(G)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/27701]
专题	中国科学院国家天文台
通讯作者	Kumar, Brajesh; Eswaraiah, Chakali; Singh, Avinash
作者单位	1.Indian Inst Astrophys, 2 Block, Koramangala 560034, Bengaluru, India 2.Chinese Acad Sci, Natl Astron Observ, Datun Rd, Beijing 100101, Peoples R China 3.Indian Inst Sci, Dept Phys, Joint Astron Programme, Bengaluru 560012, India 4.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, 1-3-1 Kagamiyama, Hiroshima 7398526, Japan 5.Kyoto Univ, Grad Sch Sci, Okayama Observ, 3037-5 Honjo, Asakuchi, Okayama 7190232, Japan 6.Hiroshima Univ, Dept Phys Sci, Kagamiyama 1-3-1, Higashihiroshima 7398526, Japan 7.Aryabhatta Res Inst Observat Sci, Naini Tal 263001, India
推荐引用方式 GB/T 7714	Kumar, Brajesh,Eswaraiah, Chakali,Singh, Avinash,et al. On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,488(3):3089-3099.
APA	Kumar, Brajesh.,Eswaraiah, Chakali.,Singh, Avinash.,Sahu, D. K..,Anupama, G. C..,...&Akitaya, Hiroshi.(2019).On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,488(3),3089-3099.
MLA	Kumar, Brajesh,et al."On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 488.3(2019):3089-3099.