SIMBAD references

We report redshifts in two gravitational lens systems, MG 0414+0534 and MG 0751+2716. The lens galaxy in MG 0414+0534 lies at z_l=0.9584±0.0002. The luminosity and extreme red color of the lens are thus typical of a passively evolving early-type ∼2L_* galaxy. The galaxy cannot have a significant global mean extinction without being anomalously luminous. The lens galaxy in MG 0751+2716 has a redshift of z_l=0.3502±0.0003, and it is a member of a small group. The group includes the nearby bright companion galaxy whose redshift we confirmed to be z=0.3501±0.0001 and a nearby emission-line galaxy with z=0.3505±0.0003. A second emission-line galaxy with z=0.5216±0.0001 was found nearly superposed on the first emission-line galaxy. The source in MG 0751+2716 is a z_s=3.200±0.001 radio quasar. For flat universes with Ω₀=1.0 (0.3), 96% (87%) of lenses like MG 0414+0534 and 7% (3%) of lenses like MG 0751+2716 are expected to have lower lens redshifts than observed.