Lj. King et al., A COMPLETE INFRARED EINSTEIN RING IN THE GRAVITATIONAL LENS SYSTEM B1938+666, Monthly Notices of the Royal Astronomical Society, 295(2), 1998, pp. 41-44
We report the discovery, using NICMOS on the Hubble Space Telescope, o
f an arcsec-diameter Einstein ring in the gravitational lens system B1
938 + 666. The lensing galaxy is also detected, and is most likely an
early-type galaxy. Modelling of the ring is presented and compared wit
h the radio structure from MERLIN maps. We show that the Einstein ring
is consistent with the gravitational lensing of an extended infrared
component, centred between the two radio components.