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 (MERLIN), Very Long Baseline Array (VLBA) and Hubble Space Telescope (HST). 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 Sigma(r) propto r^-beta, we find that 0.95 < beta < 1.21 at 2-sigma confidence. Including a second deflector to represent a possible satellite galaxy of the primary lens leads to slightly steeper mass profiles.
Keywords
Cite
@article{arxiv.astro-ph/0110099,
title = {High resolution observations and mass modelling of the CLASS gravitational lens B1152+199},
author = {D. Rusin and M. Norbury and A. D. Biggs and D. R. Marlow and N. J. Jackson and I. W. A. Browne and P. N. Wilkinson and S. T. Myers},
journal= {arXiv preprint arXiv:astro-ph/0110099},
year = {2009}
}
Comments
7 pages, post-referee revision for MNRAS