Authors: Alister W. Graham, Marc Balcells, and Reynier F. Peletier
Poster presentation at the Guillermo Haro GH2001 conference on "Disks of Galaxies : Kinematics, Dynamics and Perturbations"
Abstract: A further fundamental modification needs to be made to the Freeman (1970) law, such that not only do LSB galaxies possess fainter central surface brightnesses than the canonical Freeman value, but the upper limit is in fact an upper (bright) `envelope' of points in the central disk surface-brightness - log(scale-length) diagram, with slope ~2.