Fleurs 21-cm continuum observations of six nearby southern spiral galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Radio Astronomy, Spiral Galaxies, Astronomical Maps, Centimeter Waves, Continuous Spectra, Southern Sky

Scientific paper

This paper presents 21-cm continuum maps, with angular resolution of about 50 arcsec, of six nearby southern spirals observed with the Fleurs Synthesis Telescope. The observations yield the following new results. No halo has been found around NGC 253 at a level expected from previous Bonn observations at 8.7 GHz. Emission associated with spiral structure has been observed in NGC's 1365, 1566, and 5236. Disk emission has been detected from the galaxy NGC 4945 and the Circinus galaxy, both having luminous central sources.

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