A&A Supplement Series, Vol. 125, October II 1997, 337-341
Received January 20; accepted January 22, 1997
J. Kaluzny - W. Krzeminski - M. Nalezyty
Send offprint request: J. Kaluzny
Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
Carnegie Observatories, Las Campanas Observatory, La Serena, Cailla 601, Chile
We report discovery of 3 new faint variables in the globular cluster NGC 288: 2 SX Phe stars and 1 contact binary. Both SX Phe variables are blue stragglers. The contact binary is located below cluster turnoff, slightly to the red of the main sequence. New photometry of 6 previously known variables is also presented. We note that 26 out of a total 43 SX Phe stars identified recently in Cen and NGC 288 exhibit V-band light curves with full amplitudes smaller than 0.10 mag. The sample of known SX Phe stars is likely to be significantly incomplete in regard to the low amplitude variables .
keywords: globular clusters: individual: NGC 288 -- stars: variables: other -- blue stragglers -- stars: horizontal-branch -- binaries: close