On the progenitor of the type IIP SN 2013ej in M74

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题名:	On the progenitor of the type IIP SN 2013ej in M74
作者:	陳婷琬;Fraser, Morgan;Maund, Justyn R.;Smartt, Stephen J.;Kotak, Rubina;Lawrence, Andy;Bruce, Alastair;Valenti, Stefano;Yuan, Fang;Benetti, Stefano;Chen, Ting-Wan;Gal-Yam, Avishay;Inserra, Cosimo;Young, David R.
贡献者:	理學院天文研究所
日期:	2014-03-01
上传时间:	2026-04-21 14:26:17 (UTC+8)
出版者:	Oxford University Press;Oxford University Press (OUP)
摘要:	摘要： AbstractWe use natural seeing imaging of SN 2013ej in M74 to identify a progenitor candidate in archival Hubble Space Telescope (HST) + Advanced Camera for Survey images. We find a source coincident with the supernova (SN) in the F814W filter within the total 75 mas (∼3 pc astrometric uncertainty; however, the position of the progenitor candidate in contemporaneous F435W and F555W filters is significantly offset. We conclude that the ‘progenitor candidate’ is in fact two physically unrelated sources; a blue source which is likely unrelated to the SN, and a red source which we suggest exploded as SN 2013ej. Deep images with the same instrument on board HST taken when the SN has faded (in approximately two year's time) will allow us to accurately characterize the unrelated neighbouring source and hence determine the intrinsic flux of the progenitor in three filters. We suggest that the F814W flux is dominated by the progenitor of SN 2013ej, and assuming a bolometric correction appropriate to an M-type supergiant, we estimate that the mass of the progenitor of SN 2013ej was between 8 and 15.5 M⊙. 其他題名： Mon. Not. R. Astron. Soc: Lett 出版者： Oxford University Press (OUP) 出版日期： 2014-03-01 出處： Monthly Notices of the Royal Astronomical Society: Letters, 2014-03, Vol.439 (1), p.L56-60 資源來源： Alma/SFX Local Collection 版權： 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society 2013 識別號： ISSN: 1745-3925 識別號： ISSN: 1745-3933 識別號： EISSN: 1745-3933 識別號： DOI: 10.1093/mnrasl/slt179
显示于类别:	[天文研究所] 期刊論文

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