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2004MNRAS.347..968P - Mon. Not. R. Astron. Soc., 347, 968-984 (2004/January-3)
Photochemical evolution of elliptical galaxies - I. The high-redshift formation scenario.
PIPINO A. and MATTEUCCI F.
Abstract (from CDS):
By means of our model, we are able to match the observed mass-metallicity and colour-magnitude relations for the centre of the galaxies as well as to reproduce the overabundance of Mg relative to Fe, observed in the nuclei of bright ellipticals, and its increase with galactic mass. Furthermore, we find that the observed Ca underabundance relative to Mg can be real, owing to the non-negligible contribution of type Ia SNe to the production of this element. We predict metallicity and colour gradients inside the galaxies that are in good agreement with the mean value of the observed ones.
Finally, we conclude that models with a Salpeter initial mass function (IMF) are the best ones in reproducing the majority of the properties of ellipticals, although a slightly flatter IMF seems to be required in order to explain the colours of the most massive galaxies.
Abstract Copyright: 2004 RAS
Journal keyword(s): galaxies: abundances - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation
Simbad objects: 0
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