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The first optical validation of an XLEO: a detection in the XMM-Newton observation of the CDFS

V. Braito·T. Maccacaro·A. Caccianiga·P. Severgnini·R. Della Ceca
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Abstract

We present the first optical validation of an X-ray Line-Emitting Object (XLEO) discovered in the XMM-Newton observation of the Chandra Deep Field South. The object is an AGN at z_x ~ 0.66. An optical spectrum of the source indeed confirms and refines (z_o = 0.665) the redshift obtained from the X-ray line. The X-ray and optical properties of the source are presented and discussed.

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V. Braito, T. Maccacaro, A. Caccianiga, P. Severgnini, R. Della Ceca. 2005-02-04. The first optical validation of an XLEO: a detection in the XMM-Newton observation of the CDFS. https://doi.org/10.1086/429253

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