Accretion-regulated star formation in late-type galaxies

Details Accretion-regulated star formation in late-type galaxies Accretion-regulated star formation in late-type galaxies

2010-11-11

arxiv.org/abs/1011.2758v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

To appear in "UP: Have Observations Revealed a Variable Upper End of the Initial Mass Function?", Astronomical Society of the

Scientific paper

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.

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