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The “dynamical clock”: dating the internal dynamical evolution of star clusters with Blue Straggler Stars

Rendiconti Lincei SCIENZE FISICHE E NATURALI, 2020
We discuss the observational properties of a special class of objects (the so-called “Blue Straggler Stars”, BSSs) in the framework of using this stellar population as probe of the dynamical processes occurring in high-density stellar systems.
F. Ferraro, B. Lanzoni, E. Dalessandro
semanticscholar   +1 more source

Radial velocities of blue stragglers in M3

Publications of the Astronomical Society of the Pacific, 1983
The authors have obtained 1 A resolution spectra of five blue stragglers in M3 all with mv ≥ 17.3 using the MMT spectrograph and photon-counting Reticon. The spectra cover the range 4580 A to 5450 A, and except for Hβ are devoid of strong features. From measurements of the Hβ lines in the five blue stragglers and three velocity standards the authors ...
F. H. Chaffee, H. D. Ables
openaire   +2 more sources

Blue Straggler Stars: Setting up a Dynamical Clock for Open Clusters

Bulletin de la Société royale des sciences de Liège
Blue straggler stars are late bloomers that are bluer and brighter than the main sequence turnoff stars on a color-magnitude diagram of a cluster. Being a massive population compared to their other cluster siblings, their sedimentation level has been ...
Khushboo K. Rao   +4 more
semanticscholar   +1 more source

Blue Straggler Stars of NGC 7789 and NGC 2506 Using AstroSat/UVIT

Bulletin de la Société royale des sciences de Liège
Blue straggler stars are intriguing objects that seem to defy the standard theory of single-star evolution. They manage to elongate their main-sequence lifetimes by acquiring mass either in a direct stellar collision or through mass transfer in a binary ...
K. Vaidya   +6 more
semanticscholar   +1 more source

Allan Sandage: Blue Stragglers

2021
One of the more recent stellar discoveries was made by noticing something out of place in globular cluster Messier 3 (M3) (Fig. 19.1).
openaire   +2 more sources

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