Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...161..155k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 161, no. 1, June 1986, p. 155-168.
Astronomy and Astrophysics
Astrophysics
68
Continuous Spectra, Dwarf Galaxies, Irregular Galaxies, Radio Galaxies, Radio Spectra, Star Formation, Astronomical Maps, Compact Galaxies, Radiant Flux Density
Scientific paper
Radio continuum observations of nearby dwarf irregular galaxies made at 4.75 GHz with the Effelsberg 100-m telescope are presented; IC 10, NGC 4449 and NGC 1569 were mapped in addition at 10.7 and 24.5 GHz. Integrated radio continuum spectra of those sample galaxies for which flux densities are available at several frequencies are indicated schematically; it is shown that these spectra are much flatter than those of normal galaxies but are similar to those of blue compact dwarf galaxies. It is noted that with the exception of the radio-brightest dwarf galaxies whose properties are reminiscent of active star-forming galaxies, most dwarf galaxies can be regarded as scaled-down versions of normal spiral galaxies (at least as far as their total radio emission is concerned).
Graeve R.
Klein Ulf
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