Paul J. Francis . ... This page provides information about, and copies of the role-playing exercises and problem-based learning exercises I use in my undergraduate Astronomy classes. You are very welcome to use, copy and modify these exercises. I only ask that you cite me as the source, and that you let me know that you are using them, and how the exercises went. ... For further information, contact Dr. Paul Francis, either by e-mail at . ... Maintainer: Paul Francis . ...

... Printed in U.S.A. THE STELLAR DISK THICKNESS OF LOW SURFACE BRIGHTNESS GALAXIES D. Bizyaev 1,2,3 and S. Kajsin 4 Received 2003 October 23; accepted 2004 June 9 ABSTRACT We present surface photometry results for a sample of 11 edge-on galaxies observed with the 6 m telescope at the Special Astrophysical Observatory, Russia. ... We find from a comparison of photometric scales that the stellar disks of LSB galaxies are thinner than those of high surface brightness ( HSB) galaxies. ... UGC 11301 .. ...