Double-radial-mode SX Phoenicis stars in the globular clusters NGC 5466 and M71

Details Double-radial-mode SX Phoenicis stars in the globular clusters NGC 5466 and M71 Double-radial-mode SX Phoenicis stars in the globular clusters NGC 5466 and M71

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..310..166j&link_type=abstract

Variable Stars in the Local Group, IAU Colloquium 193, Proceedings of the conference held 6-11 July, 2003 at Christchurch, New Z

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Through time-series CCD photometry of the globular cluster NGC 5466, we found three double-radial-mode SX Phe stars, all of which are consistent with the theoretical period ratio of the first overtone mode to the fundamental mode (P1H/PF); their period ratios are 0.7825, 0.7826 and 0.7919, respectively. We also detected a double-radial-mode SX Phe star in M71. Its period ratio is ).781, which is also consistent with the theoretical value.

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