Hostname: page-component-848d4c4894-2xdlg Total loading time: 0 Render date: 2024-06-13T10:20:33.437Z Has data issue: false hasContentIssue false
  • English
  • Français

The RR Lyrae Variables in M54 and the Sgr Dwarf Galaxy

Published online by Cambridge University Press:  03 August 2017

C. Cacciari ,
M. Bellazzini  and
S. Colucci
C. Cacciari
Affiliation:
Osservatorio Astronomico, Via Ranzani 1, 40127 Bologna, Italy
M. Bellazzini
Affiliation:
Osservatorio Astronomico, Via Ranzani 1, 40127 Bologna, Italy
S. Colucci
Affiliation:
Dip. di Astron., Univ. di Bologna, Via Ranzani 1, 40127 Bologna, Italy

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.

We report on new B, V and I CCD photometry of the globular cluster M54 that was aimed at the study of its variable stars. With respect to the previous most recent work on M54 we have nearly doubled the number of detected variable stars: M54 can now be classified as intermediate in the Oosterhoff groups. The metallicity can be estimated for the cluster and field red giant stellar population, and for the variables.

Type
Part 1. The Star Clusters of Local Group Galaxies
Information
Symposium - International Astronomical Union , Volume 207: Extragalactic Star Clusters , 2002 , pp. 168 - 170
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Alard, C. 2000, A&AS, 144, 363 Google Scholar
Bellazzini, M., Ferraro, F.R., Buonanno, R. 1999, MNRAS, 307, 619 Google Scholar
Fernley, J., Skillen, I., Carney, B.W. et al. 1998, MNRAS 293, L61 Google Scholar
Kovacs, G., Jurcsik, J. 1997, A&A, 322, 218 Google Scholar
Layden, A.C., Sarajedini, A. 2000, AJ, 119, 1760 CrossRefGoogle Scholar
Saviane, I., Rosenberg, A., Piotto, G., Aparicio, A. 2000, A&AS, 144, 5 Google Scholar