Galactic Winds and Cooling Flows in Elliptical Galaxies

Details Galactic Winds and Cooling Flows in Elliptical Galaxies Galactic Winds and Cooling Flows in Elliptical Galaxies

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..651b&link_type=abstract

Chandra Proposal ID #02600556

Computer Science

Chandra Proposal Id #02600556

Scientific paper

The standard cooling flow picture for ellipticals fails to explain existing observations, especially for the less massive galaxies, which can be X-ray faint and probably have galactic winds. We can determine the importance of galactic winds and cooling flows by comparing the stellar mass loss rate, the hot gas cooling rate determined from low temperature X-ray lines, and the cooling rate from the L_x and T_x. For the latter measure, only Chandra can separate the gaseous emission from the X-ray point sources. We propose observations of the low L_x/L_B galaxies in a complete sample of 24 elliptical galaxies, for which the high L_x/L_B are already accepted targets. Analysis of this unbiased sample will determine the prevalence of cooling flows or galactic winds in elliptical galaxies.

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