paper

VLA High Resolution 1.4 and 8.4 GHz Mapping of the Barred Galaxy NGC 3367

arXiv:astro-ph/0201138 · doi:10.1086/339559

Abstract

We report new radio continuum observations with an angular resolution of 2''.1 at 1.4 GHz and 0''.28 at 8.4 GHz of the barred galaxy NGC 3367. In the map at 1.4 GHz the central nuclear region connects to the SW lobe, with a projected structure at a position angle of PA = 230 forming a jet-like structure. The map at 8.4 GHz shows a compact unresolved source (smaller than 65 pc in diameter) associated with emission from the nucleus and several compact sources located within a radius of about 300 pc, forming a circumnuclear structure. The compact core, jet, and lobes form a small, low power counterpart to radio galaxies, with a flow axis that is out of the plane of the galaxy. The flow axis (PA=230) coincides with the PA of the major axis of the galaxy and is thus inclined to the rotation axis of the disk. In addition, the flow axis differs by about 20 deg. from the major axis of the stellar bar. Assuming that the stellar bar rotates counterclockwise (ie. assuming trailing spiral arms), this difference in angle is taken as an argument in favor of having the jet-like structure out of the plane of the disk and not associated with the stellar bar.

Accepted in the Astronomical Journal (to appear April 2002); 17 pages, 6 figs

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