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The global star formation law by supernova feedback

Dekel, A; Sarkar, Kartick C.; Jiang, Fangzhou; Bournaud, F.; Krumholz, Mark; Ceverino, Daniel; Primack, Joel R.


We address a simple model where the Kennicutt-Schmidt (KS) relation between the macroscopic densities of star formation rate (SFR, ρsfr) and gas (n) in galactic discs emerges from self-regulation of the SFR via supernova feedback. It arises from the physics of supernova bubbles, insensitive to the microscopic SFR recipe and not explicitly dependent on gravity. The key is that the filling factor of SFR-suppressed supernova bubbles self-regulates to a constant, f ∼ 0.5. Expressing the bubble...[Show more]

CollectionsANU Research Publications
Date published: 2019-10
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stz1919


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