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The First Optical Validation of an X-Ray Line-emitting Object: A Detection in the XMM-Newton Observation of the Chandra Deep Field-South

2005; IOP Publishing; Volume: 621; Issue: 2 Linguagem: Inglês

10.1086/429253

1538-4357

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

Stellar, planetary, and galactic studies

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 active galactic nucleus at zX ~ 0.66. An optical spectrum of the source indeed confirms and refines (zo = 0.665) the redshift obtained from the X-ray line. The X-ray and optical properties of the source are presented and discussed.