Period Changes in the RR Lyrae Star IM Aquilae

Volume 10 number 2 (1981)

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Elizabeth Anne Lada
Emilia P. Belserene
Maria Mitchell Observatory,

Abstract

Maria Mitchell observations of the RR Lyrae (RRab) variable IM Aquilae confirm the size of the published decrease in period but show that a single, abrupt change must be rejected in favor of two changes or continuous change.