Galaxy self-regulation
Accretion from the IGM regulates the growth of galaxies>
The Bathtub/Regulator Model
The bathtub model is a useful tool to study the scaling relations of star-forming galaxies such as the galaxy main-sequence and the Tully-Fischer relation.
Details about the methodology can be found in: Bouché et al. 2010 and Genel et al. 2012