Ejection of radio sources from spiral galaxies

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Galactic Structure, Nebulae, Radio Sources (Astronomy), Spiral Galaxies, Astrophysics, Mass Distribution, Space Density, Stellar Mass Ejection

Scientific paper

The fact that the density of radio sources in the vicinity of normal spiral galaxies is greater than that of the background has led to the hypothesis that radio-emitting nebulae are ejected from the nuclei of such galaxies. The Molonglo and Parks radio-source catalogs for 408 MHz and 2700 MHz were examined to confirm this hypothesis. It was found that the density of radio sources associated with spiral galaxies with visual photographic magnitudes of 11-13 is somewhat greater than what would be expected if the sources were randomly distributed. The results support the earlier conclusion that there are associated (ejected) radio sources in the vicinity of about 7-8% of spiral galaxies.

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