National Research Council of Canada. Herzberg Astronomy and Astrophysics
galaxy: stellar content; stars: distance; stars: evolution; stars: horizontal-brand; stars: population II
Multi-wavelength CCD photometry over 21 years has been used to produce deep color–magnitude diagrams (CMDs) together with light curves for the variables in the Galactic globular cluster NGC 5824. Twenty-one new cluster RR Lyrae stars are identified, bringing the total to 47, of which 42 have reliable periods determined for the first time.