Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pazh....7...14p&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 7, Jan. 1981, p. 14-19.) Soviet Astronomy Letters, vol. 7, Jan.-Feb. 1981, p. 8-11. Tra
Astronomy and Astrophysics
Astronomy
9
Mass Spectra, Star Formation, Star Formation Rate, Stellar Mass Accretion, Stellar Spectra, Astronomical Models, Galactic Structure, Gas Composition
Scientific paper
The dependence of the shape of the stellar mass spectrum in the present on the star formation rate in the past is analyzed for closed and open models of the galactic disk. The slope of the mass spectrum is found to be highly sensitive to time variations in the stellar birth rate if the mass is equal to 1-2 solar masses, but virtually independent of them for other masses. A comparison of the theoretical slope with the empirical slope for a mass of 1-2 solar masses shows that the star formation rate has diminished by a factor of no more than two during the lifetime of the disk irrespective of whether the model is open or closed.
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