An estimation of the radial distribution of molecular hydrogen in the Galaxy from the star formation rates

Statistics – Computation

Scientific paper

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Computational Astrophysics, Hydrogen Clouds, Milky Way Galaxy, Molecular Clouds, Radial Distribution, Star Formation, Star Formation Rate, Abundance, Gas Density, Mass Distribution, Metallicity, Rates (Per Time)

Scientific paper

The authors' previous work (Rana and Wilkinson, 1985) shows that the star formation rate ψs in the Galaxy could be empirically related to the surface density of molecular hydrogen ΣH2 by a relationship ψs ∝ ΣH2k, where k(=1.12±0.03) is obtained from the observed metallicity gradient in the Galaxy. The authors have used here various available radial distributions of the star formation rate in the above relation in order to derive a radial distribution of molecular hydrogen, independently of the CO surveys. A comparison has also been made with the present controversial estimates of ΣH2 based on various CO surveys.

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