Period Changes in Eclipsing Binary Stars

Volume 16 number 1 (1987)

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Anthony Mallama
14012 Lancaster Lane,

Abstract

Recent period changes in UU And, SW Cyg, TY Del, TW Dra, TU Her, Z Per, and Y Psc have been revealed by visual times of minima obtained over the past two decades. New ephemerides are reported for these stars.