COMMUNICATIONS / MITTEILUNGEN
Multivariability of RS Bootis
No. 87
Budapest, 1986
Abstract
3420 photoelectric observations obtained between 1971 and 1978 are
reported. The long period variation obtained by Oosterhof has been confirmed
and its change defined (P1= 533 days). A shorter cycle of 62 days has been
found superimposed on the long period. The brightening of the star
during the cycle of 62 days is yellowish or cool. The secular change
in the pulsation period has been found (Beta = 7.3x10-11 day cycle-1).
Detached O-C2 residuals give a curve of sinusoidal form which, in a binary
system, could be due to an orbit period motion of 70 years.
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