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Star Formation Rate from UV Emission and Gas Surface Density in Late-type Galaxies

Published online by Cambridge University Press:  03 August 2017

V. Buat
V. Buat*
Affiliation:
Laboratoire d'Astronomie Spatiale Traverse du Siphon. Les trois Lucs 13012 Marseille. France

Abstract

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Far-UV (200 nm) fluxes of late-type, disk-dominated galaxies are used as tracers of their current star formation activity. After dust extinction corrections, the UV luminosity per unit area is compared to the gas surface density for a sample of 28 non resolved spiral galaxies and through the disk of Messier 51 at a resolution of 50″ (imposed by CO data). In both cases, the current star formation rate per unit area shows a very good correlation with the total (atomic and molecular) gas surface density; much weaker correlations are found when one gas phase alone is concerned.

Type
VI- Other Gaseous Components
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 191 - 194
Copyright
Copyright © Kluwer 1991 

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