X-ray Line Emitting Objects in XMM-Newton Observations: the Tip of the Iceberg

Details X-ray Line Emitting Objects in XMM-Newton Observations: the Tip of the Iceberg X-ray Line Emitting Objects in XMM-Newton Observations: the Tip of the Iceberg

2004-11-05

arxiv.org/abs/astro-ph/0411141v1

Astrophys.J. 617 (2004) L33-L36

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures, accepted for publication in ApJ Letters

Scientific paper

10.1086/427024

We present preliminary results from a novel search for X-ray Line Emitting Objects (XLEOs) in XMM-Newton images. Three sources have been detected in a test-run analysis of 13 XMM-Newton observations. The three objects found are most likely extremely absorbed AGN characterized by a column density NH~10^24cm^-2. Their redshift has been directly determined from the X-ray data, by interpreting the detected emission line as the 6.4 keV Fe line. The measured equivalent width of the X-ray line is, in all three cases, several keV. This pilot study demonstrates the success of our search method and implies that a large sample of XLEOs can be obtained from the public XMM-Newton data archive.

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