Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...255...49k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 255, no. 1-2, p. 49-58.
Astronomy and Astrophysics
Astronomy
14
Dwarf Galaxies, Radio Emission, Sky Surveys (Astronomy), Stellar Spectra, Magnetic Fields, Radio Astronomy, Stellar Luminosity, Stellar Magnitude
Scientific paper
The paper reports observations at 4.75 GHz, made with the Effelsberg 100-m telescope, of a sample of 128 low-surface brightness dwarf galaxies (LSBDGs), selected mainly from the UGC catalog. The detection rate (16 percent of the galaxies) is much lower than that of 'active' dwarf galaxies such as blue compact dwarf galaxies. The radio luminosity of the surveyed LSBDGs correlates with, and is roughly proportional to, their blue luminosity in a way indistinguishable from the correlation observed in giant spirals, confirming an earlier made suggestion that, as far as the general radio continuum properties are concerned, LSBDGs behave as scaled-down versions of spirals. Spectral indices were derived or estimated for 11 LSDGs on the basis of the present and previous radio continuum surveys.
Altschuler Daniel R.
Giovanardi Carlo
Klein Ulf
Wunderlich E.
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