The Classical Cepheid Program--J.D. 2440000-2441000

Volume 1 number 1 (1972)

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Thomas A. Cragg

The Hale Observatory, Mt. Wilson, California 91023

Abstract

This paper represents a progress report on the AAVSO Classical Cepheid Program covering the period JD 2,440,000-JD 2,441,000. It is to be remembered that the primary purpose of this program is to investigate classical Cepheids with periods greater than 10.0 days for the possibility of slow period changes which might be associated with evolutionary changes in these stars.