Galactic Winds in Ellipticals: Consequences for Galactic and Intergalactic Enrichment
There are different mass-metallicity relations for different heavy elements (O, Mg, Si and Fe), the one for iron being the steepest one.
In spite of the fact that star formation stops at early epochs (< 1 Gyr), explosions of SNe of type I at the present time are predicted, in agreement with observations. Type I SN rates higher by a factor of ~ 20 with respect to the current ones are predicted for ellipticals at high redshift (≥ 3).
The contribution to the enrichment of Fe and Si of the intergalactic medium from ellipticals is computed. Good agreement is obtained with the observed abundances from X-rays, and it is claimed that the majority of the gas in clusters should be of primordial origin.
KeywordsGlobular Cluster Galaxy Cluster High Redshift Elliptical Galaxy Solar Neighbourhood
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- Burstein, D.: 1979, Astrophys. J. 224, 768.Google Scholar
- Cameron, A.G.W.: 1982, in “Essays in Nuclear Astrophysics” eds. C.A. Barnes, D.D. Clayton and D.N. Schramm, Cambridge University Press, p. 377.Google Scholar
- Faber, S.M.: 1977, in “The Evolution of Galaxies and Stellar Populations”, eds. B.M. Tinsley, R.B. Larson, Yale University Observatory, p. 157.Google Scholar
- Gustafsson, B.: 1987, ESO Workshop on “Stellar Evolution and Dynamics in the Outer Halo of the Galaxy”, eds. M. Azzopardi, F. Matteucci, K. Kjär, in press.Google Scholar
- Knapp, G.R.: 1987, IAU Symp. 127.Google Scholar
- Matteucci, F., Tornambé, A.: 1987, Astron. Astrophys. in press. (MT)Google Scholar
- Matteucci, F., Vettolani, P.: 1987, in preparation.Google Scholar
- Tammann, G.A.: 1974, in “Supernovae and Supernova Remnants”, ed. C.B. Cosmovici (Dordrecht: Reidel), p. 155.Google Scholar
- van den Bergh, S., McClure, R.D., Evans, R.: 1987, Jan. 1987 preprint of Dominion Astrophysical Observatory.Google Scholar