Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....53..295b&link_type=abstract
Astronomy and Astrophysics, vol. 53, no. 2, Dec. 1976, p. 295-303. Deutsche Forschungsgemeinschaft
Astronomy and Astrophysics
Astrophysics
55
Galactic Evolution, Galactic Radio Waves, Radiant Flux Density, Spiral Galaxies, Supernova Remnants, Thermal Radiation, H Ii Regions, Hydrogen Ions, Interstellar Gas, Nonthermal Radiation, Radio Emission, Stellar Evolution, Ubv Spectra
Scientific paper
Using a code to calculate models of evolving galaxies, the thermal and nonthermal radio continuum radiation of galaxy models is computed with a very simple concept for the origin of this radiation; i.e., H II regions and supernova remnants. A comparison with real galaxies suggests that many galaxies experience bursts of star formation, since a model with a burst of star formation superimposed describes successfully the populated regions in the diagram of (B-V) versus (radio flux density/blue light). For all models the following quantities are also given for reference: colors, gas fraction, luminosities, enrichment in elements of primary and secondary nucleosynthesis, abundances of deuterium, Lyman continuum photons per second, thermal and nonthermal radio flux, and the supernova rate.
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