Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...347..812p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 347, Dec. 15, 1989, p. 812-816. Research supported by the Universidad de Lo
Astronomy and Astrophysics
Astrophysics
30
Active Galaxies, Dwarf Galaxies, Galactic Evolution, Irregular Galaxies, Spiral Galaxies, Star Formation Rate, Metallicity, Milky Way Galaxy, Stellar Luminosity
Scientific paper
A sample of active dwarf galaxies and a sample of Sc and irregular galaxies are analyzed based on the assumption that the stellar formation rate is self-regulated in such a way that it maintains the critical pressure P(max) near the gas pressure P(g) of the interstellar medium, where P(max) is the pressure of the marginal state of stability for the transition warm gas to small clouds. The stellar formation rate Psi(PP) consistent with the condition P(max) = P(g), can be expressed as a simple analytical function of global galactic parameters. When it is assumed that the dust temperature, the gas metallicity, and the galactic diameter remain constant, it is found that Psi(PP) is reduced to the law of Schmidt with an exponent value of 1.43. Specifically, for the Galaxy, it is fond that Psi(PP) = about 10 solar masses/yr, which is reasonably consistent with previous values.
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