Skip to main content
SpringerLink
Log in

The helium content of the peculiar Oosterhoff type I globular cluster ω Centauri

  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

An investigation of the observational properties for RR Lyrae variables in the galactic globular cluster ω Centauri is reported. The results show that ω Centauri belongs to the Oosterhoff Group I, notwithstanding the large, Oo II-like value of the average of the periods of ab-type RR Lyrae. The helium content is derived for this cluster from the analysis of the variables in the (A-logT e) plane. It is shown that the helium abundance is very close to the value Y=0.30, about 0.05 larger than the value derived for the ‘normal’ Oo I globular cluster M3.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Bessell, M. S. and Norris, J.: 1976,Astrophys. J. 208, 369.

    Google Scholar 

  • Butler, D., Dickens, R. J. and Epps, E.: 1978,Astrophys. J. 225, 148.

    Google Scholar 

  • Caloi, V., Castellani, V. and Tornambè, A.: 1978,Astron. Astrophys. Suppl. 33, 169.

    Google Scholar 

  • Caputo, F. and Castellani, V.: 1975,Astrophys. Space Sci. 38, 39.

    Google Scholar 

  • Caputo, F., Castellani, V. and Tornambè, A.: 1978,Astron. Astrophys. 67, 107.

    Google Scholar 

  • Caputo, F., Castellani, V. and Tornambè, A.: 1980,Astron. Astrophys. 82, 79.

    Google Scholar 

  • Castellani, V. and Tornambè, A.: 1980, submitted toAstron. Astrophys.

  • Castellani, V., Ponte, G. and Tornambè, A.: 1980,Astrophys. Space Sci. 73, 11.

    Google Scholar 

  • Dickens, R. J. and Bell, R. A.: 1976,Astrophys. J. 207, 506.

    Google Scholar 

  • Freeman, K. C. and Rodgers, A. W.: 1975,Astrophys. J. 201, L71.

    Google Scholar 

  • Norris, J. and Bessell, M. S.: 1977,Astrophys. J. 211, L91.

    Google Scholar 

  • Norris, J. and Bessell, M. S.: 1977,Astrophys. J. 211, L91.

    Google Scholar 

  • Rodgers, A. W., Freeman, K. C., Harding, P. and Smith, G. H.: 1979,Astrophys. J. 232, 169.

    Google Scholar 

  • Stellingwerf, R. F.: 1975,Astrophys. J. 195, 441.

    Google Scholar 

  • Sweigart, A. V. and Gross, P. G.: 1976,Astrophys. J. Suppl.32, 367.

    Google Scholar 

  • Tuggle, R. S. and Iben, I., Jr.: 1972,Astrophys. J. 178, 445.

    Google Scholar 

  • van Albada, T. S. and Baker, N. H.: 1971,Astrophys. J. 169, 311.

    Google Scholar 

  • van Albada, T. S. and Baker, N. H.: 1973,Astrophys. J. 185, 477.

    Google Scholar 

  • Wehlau, A. and Demers, S.: 1977,Astron. Astrophys. 57, 251.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Istituto Astrofisica Spaziale, Frascati, Italy

    Filippina Caputo

Authors
  1. Filippina Caputo
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Caputo, F. The helium content of the peculiar Oosterhoff type I globular cluster ω Centauri. Astrophys Space Sci 76, 329–339 (1981). https://doi.org/10.1007/BF00687497

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00687497

Keywords

Search

Navigation