The Interplay between ISM, Star Formation and Galaxy Evolution

Details The Interplay between ISM, Star Formation and Galaxy Evolution The Interplay between ISM, Star Formation and Galaxy Evolution

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.289..445s&link_type=abstract

Astrophysics and Space Science, v. 289, Issue 3, p. 445-448 (2004).

Astronomy and Astrophysics

Astrophysics

Galaxies: Formation, Evolution, Stellar Content, Kinematics And Dynamics, Ism, Chemical Enrichment

Scientific paper

I present a model for the formation and evolution of a massive disk galaxy, within a growing dark halo whose mass evolves according to cosmological simulations of structure formation. The galactic evolution is simulated with a new 3D chemo-dynamical code, including dark matter, stars and a multi-phase ISM. We follow the evolution from redshift z = 4.85 until the present epoch. The energy release by massive stars and supernovae prevents a rapid collapse of the baryonic matter and delays the maximum star formation until redshift z ≈ 1. The galaxy forms radially from inside-out and vertically from top-to-bottom. The feedback of stars leads to turbulent motions and large-scale flows in the ISM. As one result the galactic disk is significantly enriched by chemical elements synthesized in bulge stars.

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