Hubble Space TelescopeObservations of 10 Two‐Image Gravitational Lenses

We report on a program to obtain HST observations of galaxy-massgravitational lens systems at optical and infrared wavelengths. Here we discussthe properties of 10 two-image gravitational lens systems (Q0142-100=UM673,B0218+357, SBS0909+532, BRI0952-0115, LBQS1009-0252, Q1017-207=J03.13,B1030+074, HE1104-1805, Q1208+1011, and PKS1830-211). We grouped these 10systems because they have limited lens model constraints and often show poorcontrast between the images and the lens galaxy. Of the 10 lens galaxies, 7 areprobably early-type galaxies, 2 are probably late-type galaxies (B0218+357 andPKS1830-211), and one was not detected (Q1208+1011). We detect the hostgalaxies of the z_s=4.50 lensed quasar in BRI0952-0115, the z_s=2.32 lensedquasar in HE1104-1805, and the unlensed z=1.63 quasar near LBQS1009-0252. Wefit a set of four standard lens models to each lens that had sufficientconstraints to compare isothermal dark matter and constant mass-to-light lensmodels, and to explore the effects of local tidal shears.Comment: Submitted to ApJ 1999.09.03. Accepted 2000.01.21 with moderate revisions, some new data and figures. 2002.01.31 Corrected missing Table 2 entries for PKS1830. LaTeX with AASTeX and psfig2 macro