Spiral and irregular galaxies at 2.7 and 8.1 GHz. IV - NGC 3079 and NGC 4490

Details Spiral and irregular galaxies at 2.7 and 8.1 GHz. IV - NGC 3079 and NGC 4490 Spiral and irregular galaxies at 2.7 and 8.1 GHz. IV - NGC 3079 and NGC 4490

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....63..199s&link_type=abstract

Astronomy and Astrophysics, vol. 63, no. 1-2, Feb. 1978, p. 199-208.

Astronomy and Astrophysics

Astrophysics

39

Galactic Structure, Radio Emission, Spiral Galaxies, Stellar Evolution, Astronomical Maps, Hydrogen Clouds, Hydrogen Ions, Radio Galaxies

Scientific paper

Aperture synthesis radio maps of NGC 3079 and the interacting pair NGC 4490/4485 at 2.7 and 8.1 GHz show the dominant component of radio emission to be nonthermal in both cases. NGC resolves into a compact nuclear component and a ridge parallel to the plane of the galaxy; a triple emission source roughly perpendicular to the galactic ridge may be interpreted in terms of explosive events in the nucleus. Some of the radio-emitting regions in NGC 4490 coincide with H II complexes; in addition, the nonthermal emissions in NGC 4490 appear to be associated with active star formation.

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