Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-09-19
Astrophys.Space Sci. 277 (2001) 305-308
Astronomy and Astrophysics
Astrophysics
4 pages to appear in 'The Evolution of Galaxies. I. Observational Clues', eds. J.M. Vilchez, G.Stasinska and E. Perez, Kluwer,
Scientific paper
We present unified chemical and spectrophotometric evolutionary synthesis models that allow to describe composite stellar populations in a chemically consistent way. Keeping track of the ISM abundance at birth of each star and using sets of input physics (stellar yields, tracks, spectra) for different metallicities we account for the increasing initial metallicity of successive stellar generations. For any galaxy type its Star Formation History determines the physical relation between the ages and metallicities of its stars. As compared to models using solar metallicity input physics only, differences are significant, both for the ISM enrichment evolution and for the spectrophotometric evolution, and they increase with lookback time. Results are used to interprete Damped Ly$\alpha$ Absorbers. Knowledge of the chemical evolution of the ISM allows to predict abundances of stars, star clusters, and tidal dwarf galaxies that may form when spirals merge at any redshift.
No associations
LandOfFree
The Physical Relation between Age and Metallicity in Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Physical Relation between Age and Metallicity in Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Physical Relation between Age and Metallicity in Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-147942