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47 Tuc

Published online by Cambridge University Press:  25 April 2016

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Extract

Wildey (1961) and Tifft (1963) have both done photographic photometry in two colours of 47 Tuc. They found a colour-magnitude (c-m) relation which is characterized by a very short red horizontal branch and a giant branch which is redder at a given magnitude and fainter at a given colour than that of any other globular cluster. Eggen (1961) obtained an ultraviolet excess of 0m.19 for 8 cluster members bluer than B-V = 1m.4 and of 0m.21 for 7 stars redder than this, assuming negligible reddening for the cluster.

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Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 1 , January 1967 , pp. 16
Copyright
Copyright © Astronomical Society of Australia 1967

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