Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3643
Title: CCD photometry of the distant southern globular cluster NGC 5824
Authors: Cannon, R. D
Sagar, R
Hawkins, M. R. S
Keywords: Astronomical photometry;Charge coupled devices;Color-magnitude diagram;Globular clusters;Galactic mass;Interstellar extinction;Metallicity;Milky Way galaxy;Southern sky
Issue Date: Mar-1990
Publisher: Royal Astronomical Society
Citation: Monthly Notices of Royal Astronomical Society, Vol. 243, No. 1, pp. 151 - 158
Abstract: A V, (B-V) C-M diagram for the distant globular cluster NGC 5824 is obtained from CCD observations of 285 stars reaching V = 20.5. Assuming a reddening of E(B-V) = 0.13, the color of the giant branch at the level of the horizontal branch is found to be (B-V)o,g = 0.77, while the apparent distance modulus (V-Mv) is shown to be 18.0 + or - 0.2. Also, an Fe/H abundance ratio = -1.7 and a heliocentric distance of 33 + or - 3 kpc are estimated. The results produce a galactocentric distance of 25 kpc. This result is combined with the radial-velocity determination of Hesser, Shawl, and Meyer (1986), making it possible to plot the representative point of the cluster in Lynden and Bell's (1983) velocity-distance diagram.
URI: http://hdl.handle.net/2248/3643
ISSN: 0035-8711
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