Supernovae and the IGM

Details Supernovae and the IGM Supernovae and the IGM

2000-08-23

arxiv.org/abs/astro-ph/0008365v1

Astronomy and Astrophysics

Astrophysics

6 pages to appear in "Gas and Galaxy Evolution" ASP Conf. Ser., Hibbard, Rupen & van Gorkom eds

Scientific paper

An energetic argument implies that a galaxy like the Milky Way is blowing a powerful wind that carries away most of the heavy elements currently synthesized and has impacted the IGM out to at least 180 kpc. Rich clusters of galaxies appear to be closed systems in which most heavy elements are ejected from galaxies. More supernovae are required than the yield of core-collapse SNe from a Salpeter IMF. X-ray observations imply that the IGM in groups and clusters as been strongly preheated. SNe probably cannot supply the required energy, which must come from AGN.

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