Hot Gas Halos in Field Ellipticals

Details Hot Gas Halos in Field Ellipticals Hot Gas Halos in Field Ellipticals

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...46m&link_type=abstract

XMM-Newton Proposal ID #06514602

Computer Science

Galaxies, Galactic Surveys, Ngc7007, Ngc6909

Scientific paper

Recent Chandra and XMM-Newton observations show that a large fraction of early-type galaxies in groups and clusters retain hot gas halos. However, the properties of these halos are consistent with the idea that the amount of hot gas has been reduced by environmental effects like ram-pressure stripping and evaporation in some cases. To quantify the importance of such mechanisms, we need to compare the properties of ellipticals in rich environments to those in the field where these mechanisms are not expected to be important. Many optically-luminous field galaxies have now been observed with Chandra. XMM-Newton observations are needed to extend the study of the hot gas content of field galaxies to lower luminosity systems.

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