Enrichment and heating of the intracluster medium through galactic winds

Details Enrichment and heating of the intracluster medium through galactic winds Enrichment and heating of the intracluster medium through galactic winds

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380...39d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 380, Oct. 10, 1991, p. 39-48. Research supported by Smithsonian Scholarly S

Astronomy and Astrophysics

Astrophysics

108

Cosmic Plasma, Elliptical Galaxies, Interacting Galaxies, Intergalactic Media, Luminosity, Galactic Clusters, Galactic Evolution

Scientific paper

The effect galactic winds have on the heavy element abundance and energetics of the intracluster medium is examined. A method for simulating the dynamic and chemical evolution of the interstellar medium in elliptical galaxies is presented. The sequence of evolutionary stages (i.e., winds, partial winds, and cooling flows) encountered in the present models, and the evolving mass and energy injection rates into the intracluster medium from individual galaxies are discussed. It is assumed that the member galaxies have a Schechter luminosity function, and the luminosity-averaged mass and energy ejection rates are calculated. The resulting metallicity and temperature of the intracluster medium are compared with observations. The fraction of the initial luminous mass of the member galaxies in a cluster that is expelled over their lifetime is found to depend primarily on the stellar initial mass function. One-half of this gas is ejected during the first 2-4 x 10 to the 8th yr.

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