HST Observations of 10 Two-Image Gravitational Lenses

Details HST Observations of 10 Two-Image Gravitational Lenses HST Observations of 10 Two-Image Gravitational Lenses

1999-09-03

arxiv.org/abs/astro-ph/9909072v3

Astronomy and Astrophysics

Astrophysics

Submitted to ApJ 1999.09.03. Accepted 2000.01.21 with moderate revisions, some new data and figures. 2002.01.31 Corrected miss

Scientific paper

10.1086/308963

We report on a program to obtain HST observations of galaxy-mass gravitational lens systems at optical and infrared wavelengths. Here we discuss the 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 10 systems because they have limited lens model constraints and often show poor contrast between the images and the lens galaxy. Of the 10 lens galaxies, 7 are probably early-type galaxies, 2 are probably late-type galaxies (B0218+357 and PKS1830-211), and one was not detected (Q1208+1011). We detect the host galaxies of the z_s=4.50 lensed quasar in BRI0952-0115, the z_s=2.32 lensed quasar in HE1104-1805, and the unlensed z=1.63 quasar near LBQS1009-0252. We fit a set of four standard lens models to each lens that had sufficient constraints to compare isothermal dark matter and constant mass-to-light lens models, and to explore the effects of local tidal shears.

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