Near Infrared Imaging of the z=4.41 Radio Galaxy 6C0140+326

Astronomy and Astrophysics – Astronomy

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Scientific paper

We present near-infrared, K-band imaging of the z=4.41 radio galaxy 6C0140+326 taken with the W.M. Keck Telescope in ~ 0.5" seeing. A resolved source is clearly detected between the radio lobes, with a major axis roughly aligned with the radio emission. The infrared source has a K ~ 21.2 mag as measured in a 1x2'' aperture. The previously measured Lyalpha line flux (Rawlings et al. 1995) implies that at most about 10% of the K-band emission can be due to the [OII] 3727 Angstroms emission line. If the remaining K-band flux is starlight, this implies a host galaxy of at least 5L(*) .

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