Mathematics – Logic
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21334405t&link_type=abstract
American Astronomical Society, AAS Meeting #213, #344.05; Bulletin of the American Astronomical Society, Vol. 41, p.479
Mathematics
Logic
Scientific paper
We investigate, using cosmological simulations of galaxy formation, the physics behind established scalings between galactic-scale observables (such as the star formation rate, gas density, and metallicity) in starforming galaxies. To this effect, we follow the formation of molecular hydrogen in the ISM in a self-consistent way, including the effects of nonequilibrium chemistry and cooling, as well as radiative transfer. We develop subgrid starformation models tied to molecular hydrogen. We find that, under such implementations of star formation, the observed scalings of the star formation rate with mulecular and atomic hydrogen in galactic scales arise naturally.
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