Galaxy, Group, and Cluster Mass Profiles from Small Scales to the Virial Radius

Details Galaxy, Group, and Cluster Mass Profiles from Small Scales to the Virial Radius Galaxy, Group, and Cluster Mass Profiles from Small Scales to the Virial Radius

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf....4b&link_type=abstract

"Structure in Clusters and Groups of Galaxies in the Chandra Era, 2011 Chandra Science Workshop held July 12-14, 2011. Edited by

Physics

Scientific paper

I will discuss several recent results from our group on mass profiles obtained from X-rays: (1) a new relationship between the slope of the total mass profile and the stellar half-light radius in massive elliptical galaxies, (2) evidence that the elliptical galaxy NGC 720 resides in a modest Milky-Way--size halo containing the cosmic fraction of baryons, (3) results of a combined X-ray and stellar dynamics study of the group-scale Virgo galaxy NGC 4649 to quantify the amount of non-hydrostatic support of the gas, and (4) a systematic study of the biases arising from spherically averaging intrinsically ellipsoidal galaxy clusters.

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