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Astron. Astrophys. 359, 597-600 (2000)

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SX Phe stars in globular clusters *

E. Rodríguez and M.J. López-González

Instituto de Astrofísica de Andalucía, CSIC, P.O. Box 3004, 18080 Granada, Spain

Received 13 March 2000 / Accepted 9 May 2000


We present for the first time a catalogue of SX Phe-type pulsating variables in globular clusters. In addition, SX Phe variables discovered in the Carina dwarf galaxy and other ones probably belonging to the Sagittarius dwarf galaxy are included. This catalogue is intended to be an up-dated list of all the SX Phe stars, in globular clusters and galaxies, known until now, covering information published up to January, 2000. In summary, 149 variables are presented in our list for SX Phe-type variables belonging to 18 globular clusters and 2 galaxies. Some relevant distributions are also shown. The analysis of metal abundances and mean periods shows that both parameters are correlated in the sense that the periods of the variables are longer as the metallicity of the stellar system is higher.

Key words: stars: variables: general – stars: oscillations – stars: fundamental parameters – techniques: photometric

* Table 1 is only available at the CDS via anonymous ftp to ftp://cdsarc.u-strasbg.fr/J/A+A/359/597 ( or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/359/597

Send offprint requests to: E. Rodríguez (eloy@iaa.es)

© European Southern Observatory (ESO) 2000

Online publication: July 7, 2000