The Baryon Content of Galaxy Groups

Details The Baryon Content of Galaxy Groups The Baryon Content of Galaxy Groups

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21830902s&link_type=abstract

American Astronomical Society, AAS Meeting #218, #309.02; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The content and distribution of baryons in cosmic halos put important constraints on the history of structure formation. Galaxy groups are the least massive halos where most of the cosmic baryons are accounted, either in stars or in the hot, diffuse gas between galaxies. The interplay between the baryons in galaxies and in the hot gas has significant mutual impact. In order to better explain galaxy formation, we need to understand the properties of baryons not locked into stars and the reasons why they were not. This talk will review the recent progresses on our understanding on the baryon content of galaxy groups and the thermodynamic properties of hot gas.

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