Type:		Journal, Article
Title:		The Iron Line Background
Author(s):		Brusa, M.; Gilli, R.; Comastri, A.
Date:		2005
Abstract:		We investigate the presence of iron line emission among faint X-ray sources identified in the 1Ms Chandra Deep Field South and in the 2Ms 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 an 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.
Keywords:		chandra, axaf, Chanra Deep Field-North, Chandra Deep Field-South, Iron Spectra from Supermassive Black Holes, chandra images, chandra observations, chandra photos, space photos, X-ray images, X-ray observations, multiwavelength images, constellations, scales, cxc, cxc images, telescope, observatory, x-ray, astronomy, astrophysics
Journal (full):		The Astrophysical Journal Letters
Volume:		621
Start Page:		L5
End Page:		L8
Link:		http://arxiv.org/abs/astro-ph/0501542
Link (PDF):		http://arxiv.org/pdf/astro-ph/0501542v1