Galaxy Evolution: An Overview

Details Galaxy Evolution: An Overview Galaxy Evolution: An Overview

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ap%26ss.281...13g&link_type=abstract

Astrophysics and Space Science, v. 281, Issue 1, p. 13-23 (2002).

Astronomy and Astrophysics

Astrophysics

3

Cosmic Background, Deep Surveys, Galaxy Evolution, Galaxy Formation, Structure Formation

Scientific paper

We review recent ideas on the evolution of galaxies. Two models are competing to explain the observational features: the monolithic model in which galaxies assemble at high redshift, and evolve with little influence from the environment, and the hierarchical model in which small galaxies progressively assemble to form bigger objects. We describe the basic features of the model of hierarchical formation, and we try to valuate how the observations in the optical and infrared/submillimetre fit in the scenario. Finally, we show a few results from a hybrid, N-body simulation + semi-analytic model of hierarchical formation that produces detailed quantitative predictions to be compared to the data.

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