Long period variables in the globular cluster 47 Tuc: Radial velocity variations T. Lebzelter, P. R. Wood, K. H. Hinkle, R. R. Joyce and F. C. Fekel A&A, 432 1 (2005) 207-217 Published online: 22 February 2005 DOI: 10.1051/0004-6361:20047164