A new survey of 47 Tuc finds no hot Jupiter transits and, combined with HST data, caps hot Jupiter occurrence at 0.11%.
The Clusters AgeS Experiment (CASE): Variable Stars in the Globular Cluster 47 Tucanae
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abstract
Based on over 5400 BV images of 47 Tuc collected between 1998 and 2010 we obtained light curves of 65 variables, 21 of which are newly detected objects. New variables are located mostly just outside of the core in a region poorly studied by earlier surveys of the cluster. Among them there are four detached eclipsing binaries and five likely optical counterparts of X-ray sources. Two detached systems are promising targets for follow-up observations. We briefly discuss properties of the most interesting new variables.
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The Multiband Imaging Survey for High-Alpha PlanetS (MISHAPS) I: Preliminary Constraints on the Occurrence Rate of Hot Jupiters in 47 Tucanae
A new survey of 47 Tuc finds no hot Jupiter transits and, combined with HST data, caps hot Jupiter occurrence at 0.11%.