Baryon content of clusters and groups in the context of hierarchical cosmology

Details Baryon content of clusters and groups in the context of hierarchical cosmology Baryon content of clusters and groups in the context of hierarchical cosmology

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21830904k&link_type=abstract

American Astronomical Society, AAS Meeting #218, #309.04; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Clusters of galaxies are expected to contain a cosmic mixture of baryons and dark matter. However, it is still not clear to what degree this is so. I will discuss recent observational constraints and theoretical expectations of the baryon fractions in galaxy clusters and groups and the puzzling discrepancies between the two. I will also discuss how stellar and gas fractions of clusters fit within the larger context of stellar fraction-halo mass relation for galaxies.

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