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Date and Time of the Query: 2019-06-20 T04:08:28 PDT
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For refcode 1988ApJ...330..105S:
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Copyright by American Astronomical Society. Reproduced by permission
1988ApJ...330..105S COLLIMATED NUCLEAR EJECTION OF RADIO-EMITTING PLASMA IN THE SEYFERT GALAXY NGC 4388 JOHN L. STONE, JR. Astronomy Program, University of Maryland and Contel Federal Systems, Gaithersburg ANDREW S. WILSON Astronomy Program, University of Maryland AND MARTIN J. WARD Department of Astronomy, University of Washington Received 1987 October 29; accepted 1987 December 14 ABSTRACT We present new 6 cm and 20 cm continuum VLA maps of the edge-on Seyfert galaxy NGC 4388. These observations reveal a double-peaked radio source close to (but not coincident with) the optical Seyfert nucleus. Additionally, a cloud of radio-emitting material, apparently ejected from the nucleus, extends beyond the double-peaked source into the halo of the galaxy. The radio spectra indicate nonthermal emission. Mid-infrared observations reveal that the 10 micron source is displaced from the optical nucleus in a direction similar to that in which the radio emission is displaced. The overall radio structure is bent, with the outer structure aligning roughly perpendicular to the galaxy disk. We suggest that either gravitational buoyancy, jet precession, or a combination thereof are responsible for this radio morphology. Subject headings: galaxies: individual (NGC 4388) - galaxies: jets - galaxies: nuclei - galaxies: Seyfert - radio sources: galaxies
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