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Paper: A Search for EHB Pulsators in the Globular Cluster NGC 6752
Volume: 392, Hot Subdwarf Stars and Related Objects
Page: 347
Authors: Catelan, M.; Prieto, G.E.; Zoccali, M.; Weidner, C.; Stetson, P.B.; Moni Bidin, C.; Altmann, M.; Smith, H.A.; Pritzl, B.J.; Borissova, J.; De Medeiros J.R.
Abstract: We describe the status of a project whose main goal is to detect variability along the extreme horizontal branch of the globular cluster NGC 6752. Based on Magellan 6.5-m data, preliminary light curves are presented for some candidate variables. By combining our time-series data, we also produce a deep CMD of unprecedented quality for the cluster which reveals a remarkable lack of main sequence binaries, possibly pointing to a low primordial binary fraction.
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