A survey of the distribution of wavelength 2.8 CM radio continuum in nearby galaxies. III - A small sample of irregular and blue compact galaxies

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Centimeter Waves, Compact Galaxies, Dwarf Galaxies, Galactic Radio Waves, Radio Galaxies, Radio Spectra, Stellar Evolution, Astronomical Maps, Barred Galaxies, Blue Stars, Continuous Spectra, Galactic Radiation, Luminosity, Spiral Galaxies

Scientific paper

A sample of irregular and blue compact galaxies have been mapped at 2.8 cm wavelength using the 100-m radio telescope. Most of the objects have so far lacked detailed information about their radio continuum morphology. Comparing the present observations with the rather scanty published data at lower frequencies, the integrated spectra of these objects can be determined. Some of the dwarf galaxies in the sample have spectra flatter than those found for normal spirals, indicating a predominance of thermal emission. The bluest galaxies studied in the present paper have a much larger ratio of radio to optical luminosity. This result suggests a relation between color and radio continuum luminosity for galaxies.

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