We develop a four-phase galaxy evolution model in order to study the effect of accretion of extra-galactic gas on the star formation rate (SFR) of a galaxy. Pure self-regulated star formation of isolated galaxies is replaced by an accretion-regulated star formation mode. The SFR settles into an equlibrium determined entirely by the gas accretion rate on a Gyr time scale.
@article{arxiv.1011.2758,
title = {Accretion-regulated star formation in late-type galaxies},
author = {Jan Pflamm-Altenburg and Gerhard Hensler},
journal= {arXiv preprint arXiv:1011.2758},
year = {2010}
}
Comments
To appear in "UP: Have Observations Revealed a Variable Upper End of the Initial Mass Function?", Astronomical Society of the Pacific Conference Series