INFRARED IMAGING OF MG 0414+0534 - THE RED GRAVITATIONAL LENS SYSTEMS AS LENSED RADIO GALAXIES

We present an infrared image of the gravitational lens system MG 0414 + 0534, and infrared photometry of PG 1115 + 080, H1413 + 117, and Q1429-008. The infrared image of MG 0414 + 0534 shows a morphology that is similar to the radio and optical morphologies. The object is bright (K' = 13.7) and extremely red (I-K' = 5.7). MG 0414 + 0534 thus becomes the second radio-selected lens system to have very red optical-infrared colors. When plotted on a color-magnitude diagram of objects from a radio survey, MG 0414 + 0534 and the other very red system, MG 1131 + 0456, lie near the locus of radio galaxies. We therefore suggest that these systems are lensed high-redshift radio galaxies. In general, lensed radio galaxies should be common among lens systems selected from radio surveys, since a high proportion of radio sources are radio galaxies.