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Quasi-equilibrium Models of High-redshift Disc Galaxy Evolution by Steven R Furlanetto is a Physics and Astronomy article available to read on EtoBox.

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## ABSTRACT In recent years, simple models of galaxy formation have been shown to provide reasonably good matches to available data on high-redshift luminosity functions. However, these prescriptions are primarily phenomenological, with only crude connections to the physics of galaxy evolution. Here, we introduce a set of galaxy models that are based on a simple physical framework but incorporate more sophisticated models of feedback, star formation, and other processes. We apply these models to the high-redshift regime, showing that most of the generic predictions of the simplest models remain valid. In particular, the stellar mass–halo mass relation depends almost entirely on the physics of feedback (and is thus independent of the details of small-scale star formation) and the specific star formation rate is a simple multiple of the cosmological accretion rate. We also show that, in contrast, the galaxy’s gas mass is sensitive to the physics of star formation, although the inclusion of feedback-driven star formation laws significantly changes the naive expectations. While these models are far from detailed enough to describe every aspect of galaxy formation, they inform our under

Who reads Quasi-equilibrium Models of High-redshift Disc Galaxy Evolution?

Author

Steven R Furlanetto

Publisher

Oxford University Press (OUP)

Published

2020

Language

EN

Field

Physics and Astronomy (Physical Sciences)