The Characteristic Period of Pulsation of β Gruis
Sebastián A. Otero
Wezen 1 88, Buenos Aires, Argentina, and Centro de Estudios Astronómicos (CEA),
Mar del Plata, Argentina
Society of South Australia (ASSA), GPO Box 199, Adelaide, SA 5001, Australia
November 29, 2005; revised June 15, 2006; accepted June 17, 2006
Abstract Analysis of photoelectric and visual
photometry of the red giant β Gru led to the detection of a
37-day period with a V-range of 0.34 magnitude and the consequent
reclassification of the star from the type Lc to SRb.
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