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Does The System Theta Virginis Represent A New Class of Pulsating Star?

Published online by Cambridge University Press:  12 April 2016

W.R. Beardsley  and
E.R. Zizka
W.R. Beardsley
Affiliation:
Allegheny Observatory University of Pittsburgh
E.R. Zizka
Affiliation:
Allegheny Observatory University of Pittsburgh

Abstract

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Analysis of the radial velocity variation of θ Virginis A has revealed that, superposed on an orbital variation with a period of 17 years, there is present an ultrashort periodic variation of 0.15-day. This secondary cycle is attributed to pulsation. The question of what type of pulsating star θ Virginis A may represent is discussed.

Resumen

Resumen

El análisis de la variación de la velocidad radial de θ Virginis A ha revelado que superpuesta a la variación orbital de 17 años de periodo, existe un período de variación ultracorto de 0.15 días. Este ciclo secundario se atribuye a pulsaciones. Se discute el tipo de estrella pülstante que θ Virginis A puede ser.

Type
Session 4
Information
International Astronomical Union Colloquium , Volume 33: Observational Parameters and Dynamical Evolution of Multiple Stars , May 1977 , pp. 109 - 112
Copyright
Copyright © Otto G. Franz and Paris Pismis 1977

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