Comments on the UBV Photometric System’s Defining Standard Stars
Arlo U. Landolt
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803
Received August 2, 2013; accepted August 6, 2013
The purpose of this paper is to call the observing community’s attention to the re-affirmation that a majority, 80 percent, of the basic UBV standard stars either are suspected or known variable stars. The elucidation of these stars’ variability characteristics in exquisite detail is a task for which AAVSO observers are eminently qualified.