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Date and Time of the Query: 2019-08-18 T02:14:34 PDT
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For refcode 1999A&AS..137..457M:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1999A&AS..137..457M Radio continuum morphology of southern Seyfert galaxies. MORGANTI R., TSVETANOV Z.I., GALLIMORE J., ALLEN M.G. Received OCtober 19, 1998; accepted April 16, 1999 Abstract: We present radio observations for 29 southern Seyfert galaxies selected from a volume limited sample with cz < 3600 km/s, and declination {delta}<0^deg^. Objects with declination -30^deg^<{delta}<0^deg^ were observed with the Very Large Array (VLA) at 6cm (4.9GHz) and objects with {delta}<-300 were observed with the Australia Telescope Compact Array (ATCA) at 3.5cm (8.6GHz). Both the VLA and the ATCA observations have a resolution of ~1". These new observations cover more than 50% of the southern sample with all but two of the 29 objects detected above our limit of 0.15mJy. Combining these data with data available from the literature gives almost 85% coverage of the southern sample and further expands the radio observations of a distance limited sample by 22%. Collecting additional sources from the literature, consisting of known Seyferts with cz<4600km/s, we find that 38% of the sources are unresolved at arcsecond resolution, and 34% have linear radio structure. Our results expand upon and are consistent with earlier studies. We confirm a correlation between the size of the radio structure and the radio luminosity. A comparison between Seyfert types 1 and 2 finds that type 2s tend to have a larger linear size. There is no statistically significant difference in radio power between types 1 and 2, although all the most powerful objects appear to be Seyfert 2's. No significant difference has been found in the spectral indices. Key words: radio continuum: galaxies - galaxies: Seyfert
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