New variables in NGC 288 (Kaluzny+ 1997)

Details New variables in NGC 288 (Kaluzny+ 1997) New variables in NGC 288 (Kaluzny+ 1997)

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..41250337k&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/125/337. Originally published in: 1997A&AS..125..337K

Computer Science

Clusters: Globular, Stars: Variable

Scientific paper

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 ω Cen and NGC 288 exhibit V-band light curves with full amplitudes smaller than 0.10mag. The sample of known SX Phe stars is likely to be significantly incomplete in regard to the low amplitude variables. (9 data files).

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