Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...397....5c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 397, no. 1, p. 5-13.
Astronomy and Astrophysics
Astrophysics
41
Cosmology, Dwarf Galaxies, Galactic Evolution, Interacting Galaxies, Red Shift, Starburst Galaxies, Astronomical Models, Luminosity, Star Formation
Scientific paper
Simple theoretical arguments are used here to model the effects of interaction-induced starbursts and of the progressive formation of galaxies on the faint galaxy properties in an Omega = 1 cosmology. It is shown that interactions and mergers brighten the numerous gas-rich dwarf galaxies at moderately high redshifts and may make the galaxy luminosity function depart significantly from the predictions of models which assume standard evolution. It is concluded that a marginally acceptable model describing the faint galaxy population is that present-day galaxies began to appear in large numbers at z about 3 and were thereafter subjected to interactions and minor mergers inducing starbursts, mostly in gas-rich, low-luminosity galaxies at a rate that declined by about an order of magnitude from z about 1 to the present.
Carlberg Ray G.
Charlot Stephane
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