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We compare the arcsecond-scale circumnuclear radio continuum propertiesbetween five Seyfert and five starburst galaxies, concentrating on the searchfor any structures that could imply a spatial or causal connection between thenuclear activity and a circumnuclear starburst ring. No evidence is found inthe radio emission for a link between the triggering or feeding of nuclearactivity and the properties of circumnuclear star formation. Conversely, thereis no clear evidence of nuclear outflows or jets triggering activity in thecircumnuclear rings of star formation. Interestingly, the difference in theangle between the apparent orientation of the most elongated radio emission andthe orientation of the major axis of the galaxy is on average larger inSeyferts than in starburst galaxies, and Seyferts appear to have a largerphysical size scale of the circumnuclear radio continuum emission. Theconcentration, asymmetry, and clumpiness parameters of radio continuum emissionin Seyferts and starbursts are comparable, as are the radial profiles of radiocontinuum and near-infrared line emission. The circumnuclear star formation andsupernova rates do not depend on the level of nuclear activity. The radioemission usually traces the near-infrared Br-gamma and H2 1-0 S(1) lineemission on large spatial scales, but locally their distributions aredifferent, most likely because of the effects of varying local magnetic fieldsand dust absorption and scattering.Comment: 21 pages, 10 figures. Accepted for publication in the Astronomical  Journa

Examining the Seyfert-Starburst Connection with Arcsecond-Resolution Radio Continuum Observations