Blue Straggler Stars in Globular Clusters: A Powerful Tool to Probe the Internal Dynamical Evolution of Stellar Systems

Autor: L. Lovisi, Alessio Mucciarelli, Emanuele Dalessandro, Francesco R. Ferraro, Barbara Lanzoni
Přispěvatelé: Ferraro, Francesco R., Lanzoni, Barbara, Dalessandro, Emanuele, Mucciarelli, Alessio, Lovisi, Loredana, ITA
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Ecology of Blue Straggler Stars ISBN: 9783662444337
Popis: This chapter presents an overview of the main observational results obtained to date about Blue Straggler Stars (BSSs) in Galactic Globular Clusters (GCs). The BSS specific frequency, radial distribution, chemical composition and rotational properties are presented and discussed in the framework of using this stellar population as probe of GC internal dynamics. In particular, the shape of the BSS radial distribution has been found to be a powerful tracer of the dynamical age of stellar systems, thus allowing the definition of the first empirical "dynamical clock".
Databáze: OpenAIRE