Giacomo Beccari

TL;DR: It is suggested that the two observed sequences of blue stragglers in M 30 are a consequence of cluster core collapse, with the bluer population arising from direct stellar collisions and the redder one arising from the evolution of close binaries that are probably still experiencing an active phase of mass transfer.

TL;DR: In this paper, the authors explored the evolution of blue stragglers mimicking their dynamics in a multi-mass King model for 47 Tucanae and found that the observed spatial distribution can not be expl ained within a purely collisional scenario in which blue straggglers are generated exclusively in the core throu gh direct mergers.

TL;DR: In this paper, a catalog of blue straggler stars (BSS) in the globular cluster 47 Tuc spanning the entire radial extent of the cluster was constructed using high resolution WFPC2-HST and wide field ground-based observations.

TL;DR: In this paper, the properties of the stellar populations in the central regions of 30 Dor, in the Large Magellanic Cloud were studied using observations obtained with the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope (HST).

TL;DR: In this article, the authors used the Wide Field Planetary Camera (WFPC2) on the Hubble Space Telescope (HST) and wide-field ground-based observations to construct a catalog of blue straggler stars (BSSs) in the globular cluster 47 Tuc spanning the entire radial extent of the cluster.