Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-20T14:23:53.307Z Has data issue: false hasContentIssue false
  • English
  • Français

The radius and the pulsation constant of the primary of Spica*

Published online by Cambridge University Press:  03 August 2017

M. Jerzykiewicz  and
C. Sterken
M. Jerzykiewicz
Affiliation:
Wroclaw University Observatory ul. Kopernika 11 51-622 Wroclaw, Poland
C. Sterken
Affiliation:
Astrophysical Institute Vrije Universiteit Brussel Pleinlaan 2 1050 Brussel, Belgium

Extract

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.

In the late sixties, Spica (α Virginia, a 4.01454-day SB2 and interferometric binary, with a B1 IV primary component) was showing a light variation that consisted of two periodic terms. One term had the form of a double wave with the above-mentioned orbital period, the other was sinusoidal in shape and had a period equal to 0.1738 days. The double-wave term was clearly an ellipsoidal variation, caused by aspect changes of the tidally distorted primary, whereas the short-period term could only be explained as due to the primary's β Cephei-type pulsations. However, in 1972 these pulsations became undetectable.

Type
Chapter 4: Asteroseismology: Results and Prospects
Information
Symposium - International Astronomical Union , Volume 123: Advances In Hello- and Asteroseismology , 1988 , pp. 273 - 276
Copyright
Copyright © Reidel 1988 

References

Code, A.D., Davis, J., Bless, R.C., Brown, , Hanbury, R.: 1976, Ap. J. 203, 417 Google Scholar
Cox, A.N.: 1983, in Astrophysical Processes in Upper Main Sequence Stars, ed. by Hauck, B. and Maeder, A., Geneva Observatory, p. 16 Google Scholar
Cox, A.N., Hodson, S.W., Clancy, S.P.: 1981, in Pulsating B Stars, ed. by Sterken, G.E.V.C.N. and Sterken, C., Nice Observatory, p. 365 Google Scholar
Herbison-Evans, D., Brown, , Hanbury, R., Davis, J., Allen, L.R.: 1971, Mon. Not. R. astr. Soc. 151, 161 Google Scholar
Shobbrook, R.R., Lomb, N.R., Herbison-Evans, D.: 1972, Mon. Not. R. astr. Soc. 156, 165 Google Scholar
Sterken, C., Jerzykiewicz, M.: 1986, Astron. Astrophys., in press Google Scholar