We investigate the presence of iron line emission among faint X-ray sources identified in the 1 Ms Chandra Deep Field-South and in the 2 Ms Chandra Deep Field-North. Individual source spectra are stacked in seven redshift bins over the range z=0.5-4. We find that iron line emission is a ubiquitous property of X-ray sources up to z~=3. The measured line strengths are in good agreement with those expected by simple pre-Chandra estimates based on X-ray background synthesis models. The average rest-frame equivalent width of the iron line does not show significant changes with redshift.

Brusa M., Gilli R., Comastri A. (2005). The Iron Line background. THE ASTROPHYSICAL JOURNAL LETTERS, 621, 5-8.

The Iron Line background

BRUSA, MARCELLA;
2005

Abstract

We investigate the presence of iron line emission among faint X-ray sources identified in the 1 Ms Chandra Deep Field-South and in the 2 Ms Chandra Deep Field-North. Individual source spectra are stacked in seven redshift bins over the range z=0.5-4. We find that iron line emission is a ubiquitous property of X-ray sources up to z~=3. The measured line strengths are in good agreement with those expected by simple pre-Chandra estimates based on X-ray background synthesis models. The average rest-frame equivalent width of the iron line does not show significant changes with redshift.
2005
Brusa M., Gilli R., Comastri A. (2005). The Iron Line background. THE ASTROPHYSICAL JOURNAL LETTERS, 621, 5-8.
Brusa M.; Gilli R.; Comastri A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/132571
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