| High-resolution radio observations of Seyfert galaxies in the extended 12-micron sample - I. The observations (2000) | |||||||||||||||
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| Mon Not Astron Soc Printed April L TEX style file High resolution radio observations Seyfert galaxies the extended micron sample The observations Andy Thean Alan Pedlar Marek Kukula Stefi Baum and Christopher Dea arXiv astro Jan Istituto Radioastronomia del CNR Via Gobetti Bologna Italy Nuffield Radio Astronomy Laboratories University Manchester Jodrell Bank Macclesfield Cheshire Institute for Astronomy University Edinburgh Royal Observatory Blackford Hill Edinburgh Space Telescope Science Institute San Martin Drive Baltimore Maryland USA Jan ABSTRACT present GHz VLA configuration observations sources from the mid infrared selected AGN sample Rush These arcsec resolution observations allow elongated radio structures tens parsecs size resolved and enable radio components smaller than arcsec isolated from diffuse galactic disc emission When combined with previous data matched radio observations covering ninety percent the sample have been collected and these represent the largest sub arcsecond resolution radio imaging survey homogeneously selected sample Seyfert galaxies date use our observations identify radio loud AGN the sample The nature the radio emission from Seyfert nuclei will discussed subsequent papers Key words galaxies active galaxies Seyfert galaxies statistics infrared galaxies radio continuum galaxies INTRODUCTION Exceptional amounts energy are being released the centres few percent all galaxies These Active Galactic Nuclei AGN are among the most luminous objects. We present 8.4 GHz VLA A–configuration observations of 87 sources from the mid–infrared–selected AGN sample of Rush et al. (1993). These 0.25 arcsec resolution observations allow elongated radio structures tens of parsecs in size to be resolved and enable radio components smaller than 3.5 arcsec to be isolated from diffuse galactic disc emission. When combined with previous data, matched radio observations covering ninety percent of the sample have been collected and these represent the largest sub–arcsecond–resolution radio imaging survey of a homogeneously–selected sample of Seyfert galaxies to date. We use our observations to identify 5 radio–loud AGN in the sample. The nature of the radio emission from Seyfert nuclei will be discussed in subsequent papers.. AHCT would like to acknowledge the receipt of a studentship from the Particle Physics and Astronomy Research Council and a visit funded by the STScI visitor program. Part of this research was supported by the European Commission, TMR Programme, Research Network Contract ERBFMRXCT96 0034 “CERES”. We have made use of NASA’s Astrophysics Data System Abstract Service, the NASA/IPAC Extragalactic database (NED), which is operated by the Jet Propulsion Laboratory. | |||||||||||||||
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