2005/02/04 by V. Braito, T. Maccacaro, A. Caccianiga +2 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1086/429253
published as Astrophys.J. 621 (2005) L97-L100 · 13 pages, 3 figures. Accepted for publication by ApJL
arxiv created 2005/02/04 · openalex publication_date 2005/02/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
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 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.