The Dark Matter and Baryon Content of Isolated Elliptical Galaxies

Details The Dark Matter and Baryon Content of Isolated Elliptical Galaxies The Dark Matter and Baryon Content of Isolated Elliptical Galaxies

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..127b&link_type=abstract

XMM-Newton Proposal ID #06730802

Physics

Galaxies, Galactic Surveys, Ic 4451, Ic 5157

Scientific paper

The mass profiles of elliptical galaxies are important probes of galaxy formation and cosmology. Only a few elliptical galaxies have detailed mass measurements from X-rays because of the lack of suitable targets in terms of total mass (< 10^{13} m_sun) and relaxed dynamical states appropriate for hydrostatic analysis. In previously awarded XMM and Chandra snapshot programs to search for optimal targets for X-ray studies of mass profiles on the galaxy scale, we have identified several promising isolated elliptical galaxies. We request follow-up observations with XMM to map the detailed profiles of stars, dark matter, and hot gas in two of these galaxies.

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