Radio flux measurements of normal galaxies at 80, 160 and 8870 MHz

Details Radio flux measurements of normal galaxies at 80, 160 and 8870 MHz Radio flux measurements of normal galaxies at 80, 160 and 8870 MHz

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....44..101h&link_type=abstract

Astronomy and Astrophysics, vol. 44, no. 1, Nov. 1975, p. 101-106.

Astronomy and Astrophysics

Astrophysics

20

Galactic Radiation, Radiant Flux Density, Radio Spectra, Cut-Off, Position Errors, Spectrum Analysis, Spiral Galaxies, Tables (Data)

Scientific paper

Radio flux measurements of 76 galaxies are given. Each galaxy was observed at least at one of the frequencies of 80, 160 and 8870 MHz. A low-frequency cut-off in the spectra of optically bright radio weak galaxies is a common feature. Free-free absorption seems to be a likely mechanism for the observed low frequency cut-off. The change in spectral index over the cut-off point is higher at high spectral indices. It is greatest for Sc and Sbc galaxies and becomes smaller for earlier type galaxies.

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