First Evidence of Circumstellar Disks around Blue Straggler Stars

Orsola De Marco, Thierry Lanz, John A. Ouellette +2

We present an analysis of optical HST/STIS and HST/FOS spectroscopy of 6 blue stragglers found in the globular clusters M3, NGC6752 and NGC6397. These stars are a subsample of a se…