Revisiting Variable Stars Near Globular Clusters South of ‑29° Declination
Layden, Andrew C.; Evangelista, Julia; Gupta, Sakshi; Mittameda, Mithilesh; Mulloy, Eva; Muslim, Sohan I.; Olushola-Alao, Tiyinoluwa; Rishi, Akul
United States
Abstract
We review an often-cited but seldom-accessed catalogue by Fourcade and Laborde (1966) of 785 variable stars near 47 southern Galactic globular clusters, and recover the locations of 85 stars that were not incorporated into subsequent variable star catalogues and hence have become "lost" to the literature. We match the positions of these stars with those of modern variable star databases (Gaia, ASAS-SN, and VSX) and find 96% appear in at least one of these catalogues. We used proper motions and radial velocities from the Gaia Third Data Release to assess cluster membership, finding that most are field stars, but up to five may be members of NGC 5927 and one of NGC 6624.