Other
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98..192p&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Feb. 1986, p. 192-209.
Other
42
Astronomical Photometry, Globular Clusters, Apertures, Magellanic Clouds, Milky Way Galaxy, Stellar Color, Stellar Magnitude, Ubv Spectra
Scientific paper
Cerro Tololo Inter-American Observatory B-V concentric aperture photometry obtained between 1976 and 1980 of 101 globular clusters in the Galaxy and one in the Large Magellanic Cloud is analyzed along with other available photometry to investigate the existence of color gradients in clusters. Data indicate that the colors of 19 clusters appear to be redder, and the colors of 10 clusters appear to be bluer, when measured through smaller apertures. Though no conclusions can be drawn for a number of other clusters due to the large scatter in measurements made by various observers, color gradients appear to be consistent with the random presence of one or a few relative bright stars whose color may differ appreciably from the average of other stars in the cluster. In agreement with previous conclusions, no evidence for radial variations of the stellar population within the cluster is found.
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