Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...173...23a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 173, no. 1, Feb. 1987, p. 23-38. CNRS-supported research.
Astronomy and Astrophysics
Astrophysics
580
Astronomical Models, Astronomical Photometry, Cosmochemistry, Elliptical Galaxies, Galactic Evolution, Stellar Winds, Chemical Evolution, Color-Magnitude Diagram, Horizontal Branch Stars, Star Formation
Scientific paper
The galactic wind is introduced into the evolutionary method of Arimoto and Yoshii (1986), and the chemical and photometric properties of elliptical galaxies are computed based on an expanded method of evolutionary population synthesis. It is assumed that a galaxy is supported against collapse by the supersonic motion of interstellar clouds and that star formation is induced by cloud collisions. Chemical evolution is traced until the gas heated by supernova explosions is driven out of the galaxy by a wind. The change of stellar metallicity according to the chemical evolution is explicitly taken into account in computing the integrated photometric quantities.
Arimoto Nobou
Yoshii Yoji
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