Rest-frame stacking of 2XMM catalog sources - Properties of the Fe Kα line P. Chaudhary, M. Brusa, G. Hasinger, A. Merloni, A. Comastri and K. Nandra A&A, 537 (2012) A6 Published online: 20 December 2011 DOI: 10.1051/0004-6361/201117126