A Recent Study of V783 Cygni

Volume 20 number 2 (1991)

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Julie Cross

Maria Mitchell Observatory, Nantucket, MA 02554

Abstract

The addition of recent observations to earlier data lead to the conclusion that a single parabolic O-C curve may explain the past behavior of the RR Lyrae variable V783 Cygni, rather than two separate line segments as previously suspected. These new parabolic elements, JD_max = 2436394.332 + 0.62069669 + 7.5 x 10^-11 E^2, imply a gradual period increase at the rate of 0.088+-0.023 day/million years.