TWO CANDIDATE OPTICAL COUNTERPARTS OF M82 X-1 FROM HST OBSERVATIONS

	TWO CANDIDATE OPTICAL COUNTERPARTS OF M82 X-1 FROM HST OBSERVATIONS
	Wang, Song1 ; Liu, Jifeng1,2 ; Bai, Yu1 ; Guo, Jincheng 1,3
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2015-10-20
卷号	812 期号:2
关键词	black hole physics galaxies: individual (M82) X-rays: binaries
英文摘要	Optical counterparts can provide significant constraints on the physical nature of ultraluminous X-ray sources (ULXs). In this Letter, we identify six point sources in the error circle of a ULX in M82, namely M82 X-1, by registering Chandra positions onto Hubble Space Telescope images. Two objects are considered as optical counterpart candidates of M82 X-1, which show F658N flux excess compared to the optical continuum that may suggest the existence of an accretion disk. The spectral energy distributions of the two candidates match well with the spectra for supergiants, with stellar types as F5-G0 and B5-G0, respectively. Deep spatially resolved spectroscopic follow-up and detailed studies are needed to identify the true companion and confirm the properties of this BH system.
收录类别	SCI
语种	英语
WOS记录号	WOS:000364485600017
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5515]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Song,Liu, Jifeng,Bai, Yu,et al. TWO CANDIDATE OPTICAL COUNTERPARTS OF M82 X-1 FROM HST OBSERVATIONS[J]. ASTROPHYSICAL JOURNAL LETTERS,2015,812(2).
APA	Wang, Song,Liu, Jifeng,Bai, Yu,&Guo, Jincheng.(2015).TWO CANDIDATE OPTICAL COUNTERPARTS OF M82 X-1 FROM HST OBSERVATIONS.ASTROPHYSICAL JOURNAL LETTERS,812(2).
MLA	Wang, Song,et al."TWO CANDIDATE OPTICAL COUNTERPARTS OF M82 X-1 FROM HST OBSERVATIONS".ASTROPHYSICAL JOURNAL LETTERS 812.2(2015).