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Helium and Iron in X-ray galaxy clusters

Research paper by Stefano Ettori

Indexed on: 16 Oct '06Published on: 16 Oct '06Published in: Astrophysics



Abstract

I discuss the role of the sedimentation of helium in galaxy cluster cores on the observed X-ray properties and present a history of the metal accumulation in the ICM, with new calculations with respect to my previous work following the recent evidence of a bi-modal distribution of the delay time in Supernovae Type Ia.