Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 324, Issue 3, Pages 612-616Publisher
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1365-8711.2001.04336.x
Keywords
stellar dynamics; stars : evolution; planetary systems; globular clusters : general; globular clusters : individual : 47 Tuc
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We consider the survivability of planetary systems in the globular cluster 47 Tucanae. We compute the cross-sections for the breakup of planetary systems via encounters with single stars and binaries. We also compute the cross-sections to leave planets on eccentric orbits. We find that wider planetary systems (d greater than or similar to 0.3 au) are Likely to be broken up in the central regions of 47 Tucanae (within the half-mass radius of the cluster). However, fighter systems and those in less-dense regions may survive. Tight systems will certainly survive in less-dense clusters where subsequent surveys should be conducted.
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