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A Population of Binaries in the Asymptotic Giant Branch of 47 Tucanae?
Beccari et al. 2006 The Astrophysical Journal Letters 652 L121.
Caption: Fig. 1.
CMD for the ACS sample. Stars marked with different symbols belong to different populations
© 2006. The American Astronomical Society. All rights reserved. Printed in U.S.A.