A one-sided radio jet in the elliptical galaxy NGC 6146

Astronomy and Astrophysics – Astronomy

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Elliptical Galaxies, Galactic Structure, Radio Jets (Astronomy), Extragalactic Radio Sources, Galactic Clusters, Galactic Nuclei, Microwave Spectra

Scientific paper

One-sided radio jets are rarely found in association with low-power compact radio cores. MERLIN observations at 18 cm with sub-arcsecond resolution show such a jet in the nucleus of the optically bright elliptical galaxy NGC 6146. The jet length is ≡1 kpc, much shorter than is typical of extragalactic radio jets. A lower resolution VLA 20-cm image shows a 6-kpc component at a position angle close to that of the 1-kpc jet. No 18- or 20-cm components are detected on the counterjet side on scales between 0.2 and 12 kpc. Two interpretations of the 1-kpc jet in NGC 6146 are offered.

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