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eJAAVSO  

Comments on the UBV Photometric System’s Defining Standard Stars

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Arlo U. Landolt

Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803

Received August 2, 2013; accepted August 6, 2013

Abstract

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.

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