Hostname: page-component-745bb68f8f-lrblm Total loading time: 0 Render date: 2025-01-13T00:18:42.445Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

References

Abt, H. A., and Biggs, E. S. 1972, Bibliography of Stellar Radial Velocities, (Tucson: Kitt Peak National Obs.).Google Scholar
Baglin, A., Breger, M., Chevalier, C., Hauck, B., le Contel, J. M., Sareyan, J. P., and Valtier, J. C. 1973, Astron. and Astrophys., 23, 221.Google Scholar
Beardsley, W. R. 1969, Pub. Allegheny Obs., 8, No. 7.Google Scholar
Brown, R. H., Hazard, C., Davis, J., and Allen, L. R. 1964, Nature, 201, 1111.Google Scholar
Conti, P. S. 1965, Ap. J., 142, 1594.Google Scholar
Conti, P. S., and Strom, S. E. 1968, Ap. J., 154, 975.Google Scholar
Deutsch, A. J. 1967, in The Magnetic and Related Stars, ed. Cameron, R. C. (Baltimore: Mono Book Corp.).Google Scholar
Frost, E. B., Barrett, S. B., and Struve, O. 1929, Pub. Yerkes Obs., 7, Part 1, 45.Google Scholar
Iriarte, B., Johnson, H. L., Mitchell, R. I., and Wisniewski, W. K. 1965, Sky Telesc, 30, 21.Google Scholar
Mitchell, S. A. 1909, Ap. J., 30, 239.Google Scholar
Oke, J. B. 1964, Ap. J., 140, 689.Google Scholar
Struve, O. 1955, Sky Telesc, 14, 461.Google Scholar