Optical emission in the radio lobes of radio galaxies. II - New observations of 21 radio lobes

Astronomy and Astrophysics – Astronomy

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Galactic Structure, Light Emission, Radio Galaxies, Radio Sources (Astronomy), Astronomical Maps, Astronomical Photography, Charge Coupled Devices

Scientific paper

The authors report new identifications of optical emission associated with the radio lobes of double radio galaxies. Optical emission is present in the outer radio structure of the sources 3C 219, 3C 244.1, 3C 247, 3C 252, 3C 268.2, 3C 321, 3C 319, 3C 337, and possibly in 3C 330. The authors have not found emission to the detection limit of V ≡ 24 in the sources 3C 79, 3C 173.1, 3C 223, 3C 325, and 3C 381. Of the 21 separate sources in optical studies of extended lobes of radio galaxies reported to date, 16 radio sources observed so far show significant optical emission within one or both lobes, while in 11 of these the optical object is within 2arcsec of the radio peak.

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