Abstract
view Abstract Citations (240) References (72) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Radio structures of Seyfert galaxies. II. Ulvestad, J. S. ; Wilson, A. S. ; Sramek, R. A. Abstract High resolution radio maps of 16 Seyfert and active galaxies are made with the VLA at 1.465 and 4.885 GHz. Three double/triple radio emission sources (Mrk 6, Mrk 7, and possibly NGC 4151) are observed and discussed. The axis of NGC 4151 is the same as the linear polarization vector of its optical continuum emission, indicating an alignment between structures on scales of 380 pc and light months. Thermal emission from the forbidden line region contributes up to 16% of the radio fluxes at 4.885 GHz, so that the bulk of the radio emission is nonthermal. The double and triple sources also indicate that the major axis of the complex of nuclear narrow line emitting clouds may be correlated with the radio source axes, although other data indicate that the radio components are not ejected along minor axes. It is also suggested that the mean power delivered by the beam is smaller than in radio galaxies, and there exists a disklike structure in the inner nucleus whose rotation axis differs from that of the rest of the galaxy. Publication: The Astrophysical Journal Pub Date: July 1981 DOI: 10.1086/159051 Bibcode: 1981ApJ...247..419U Keywords: Astronomical Maps; Galactic Radiation; Galactic Structure; Radio Galaxies; Seyfert Galaxies; Active Galaxies; Continuous Radiation; Forbidden Bands; Galactic Nuclei; Linear Polarization; Polarized Radiation; Radiant Flux Density; Spectral Line Width; Thermal Emission; Astronomy full text sources ADS | data products NED (18) SIMBAD (8) Related Materials (7) Part 1: 1980ApJ...240..429W Part 3: 1982ApJ...260...56W Part 4: 1982ApJ...263..576W Part 5: 1984ApJ...278..544U Part 6: 1984ApJ...285..439U Part 7: 1989ApJ...343..659U Part 8: 1999ApJS..120..209N
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