HST1417+523

Z(lens) V(max) Re Sigma (ap) Aperture Sigma (Re/8) References
0.809 - 1.13(0.05)" 230(14)km/s 0.8"x0.4" - Ohyama et al. 2002, AJ, 123, 2903
Keeton et al. 
(1998, ApJ, 509, 561)

Z = redshift
V (max) = maximum of the rotation curve
Re = half light radius (effective radius)
Sigma (ap) = velocity dispersion as measured with the spectroscopic aperture
Aperture = size of the spectroscopic aperture
Sigma (Re/8) = central velocity dispersion, i.e. corrected to an effective circular aperture of radius Re/8