High-resolution observations and mass modelling of the CLASS gravitational lens B1152+199
Abstract
We present a series of high-resolution radio and optical observations of the CLASS gravitational lens system B1152+199 obtained with the Multi-Element Radio-Linked Interferometer Network, Very Long Baseline Array and Hubble Space Telescope . Based on the milliarcsecond-scale substructure of the lensed radio components and precise optical astrometry for the lensing galaxy, we construct models for the system and place constraints on the galaxy mass profile. For a single galaxy model with surface mass density , we find that at 2σ confidence. Including a second deflector to represent a possible satellite galaxy of the primary lens leads to slightly steeper mass profiles.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- February 2002
- DOI:
- 10.1046/j.1365-8711.2002.05043.x
- arXiv:
- arXiv:astro-ph/0110099
- Bibcode:
- 2002MNRAS.330..205R
- Keywords:
-
- GRAVITATIONAL LENSING;
- GALAXIES: STRUCTURE;
- Astrophysics
- E-Print:
- 7 pages, post-referee revision for MNRAS