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arXiv · astro-ph/9612117

Feedback, Disk Self-regulation and Galaxy Formation

Joseph Silk
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Abstract

Self-regulation of star formation in disks is controlled by two dimensionless parameters: the Toomre parameter for gravitational instability and the porosity of the interstellar medium to supernova remnant-heated gas. An interplay between these leads to expressions for the gas fraction and star formation efficiency in disks, and to a possible explanation of the Tully-Fisher relation. I further develop feedback arguments that arise from the impact of massive star formation and death on protogalaxies in order to account for the characteristic luminosity of a galaxy and for early winds from forming spheroids.

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Joseph Silk. 1996-12-12. Feedback, Disk Self-regulation and Galaxy Formation. https://doi.org/10.1086/304073

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