Broad Hα emission in the high-redshift radio galaxy 3C 22

Astronomy and Astrophysics – Astronomy

Scientific paper

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Galaxies, Active-Quasars, Emission Lines-Galaxies, Individual, 3C 22, Infrared, Galaxies-Radio Continuum, Galaxies.

Scientific paper

We present the result of near-infrared spectroscopic observations on the
radio galaxy 3C 22 (z=0.937). Contrary to the previous classification of
this object as a narrow-line radio galaxy, we report the clear presence
of a broad Hα line, showing directly that at least some powerful
radio galaxies are simply reddened quasars.

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