A survey of the distribution of 2.8 cm-wavelength radio continuum in nearby galaxies. V - A small sample of edge-on galaxies

Details A survey of the distribution of 2.8 cm-wavelength radio continuum in nearby galaxies. V - A small sample of edge-on galaxies A survey of the distribution of 2.8 cm-wavelength radio continuum in nearby galaxies. V - A small sample of edge-on galaxies

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...133...19k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 133, no. 1, April 1984, p. 19-26.

Astronomy and Astrophysics

Astronomy

51

Astronomical Maps, Disk Galaxies, Galactic Radiation, Microwave Spectra, Radio Astronomy, Angular Resolution, Astronomical Spectroscopy, Centimeter Waves, Radiant Flux Density, Spectral Energy Distribution, Spiral Galaxies

Scientific paper

The edge-on galaxies NGC 891, 3079, 3556, 4631, and 7331 have been observed at 10.7 GHz (2.8 cm). The 'z' distribution of the radio continuum is studied, resulting in the conclusion that two galaxies show emission in the form of a thick disk. By comparison with synthesis maps at lower frequencies with similar angular resolution and sensitivity, the spectral index variation perpendicular to the disk is studied. The steepening of the spectrum in the 'z' direction is less than previously believed. The well determined total flux density determinations allow studies of the integrated spectra of the galaxies. In only one case, NGC 4631, the integrated spectrum exhibits a spectral break. In retrospect, the edge-on galaxy NGC 4631 appears to have a radio morphology which is unique in the present sample.

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