The effect of helium sedimentation on galaxy cluster masses and scaling relations

Author： Bulbul G. E.   Hasler N.   Bonamente M.   Joy M.   Marrone D.   Miller A.   Mroczkowski T.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|533|issue|A6-A6

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.533, Iss.issue, 2011-08, pp. : A6-A6

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Abstract

Context. Recent theoretical studies predict that the inner regions of galaxy clusters may have an enhanced helium abundance due to sedimentation over the cluster lifetime. If sedimentation is not suppressed (e.g., by tangled magnetic fields), this may significantly affect the cluster mass estimates.

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