Optical identification of the hard X-ray source IGR J18257-0707

dc.contributor.author	Burenin R.
dc.contributor.author	Bikmaev I.
dc.contributor.author	Evnivtsev M.
dc.contributor.author	Tomsick J.
dc.contributor.author	Sazonov S.
dc.contributor.author	Pavlinsky M.
dc.contributor.author	Sunyaev R.
dc.date.accessioned	2018-09-18T20:15:31Z
dc.date.available	2018-09-18T20:15:31Z
dc.date.issued	2009
dc.identifier.issn	1063-7737
dc.identifier.uri	https://dspace.kpfu.ru/xmlui/handle/net/138049
dc.description.abstract	We present the results of our optical identification of the hard X-ray source IGR J18257-0707 through its spectrophotometric observations with the optical RTT-150 telescope. The accurate position of the X-ray source determined using Chandra observations has allowed this source to be confidently associatedwith a faint optical object (m R ≈ 20.4) whose optical spectrumexhibits a broad H α emission line at redshift z = 0.037. Thus, the source IGR J18257-0707 is a type-1 Seyfert galaxy at redshift z = 0.037. © 2009 Pleiades Publishing, Ltd.
dc.relation.ispartofseries	Astronomy Letters
dc.subject	Active galactic nuclei
dc.subject	Gamma-ray sources
dc.subject	Optical observations
dc.subject	X-ray sources
dc.title	Optical identification of the hard X-ray source IGR J18257-0707
dc.type	Article
dc.relation.ispartofseries-issue	2
dc.relation.ispartofseries-volume	35
dc.collection	Публикации сотрудников КФУ
dc.relation.startpage	71
dc.source.id	SCOPUS10637737-2009-35-2-SID60249090090

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