The existence of blue straggler stars, which appear younger, hotter, and more massive than their siblings, is at odds with a simple picture of stellar evolution. Such stars should have exhausted their nuclear fuel and evolved long ago to become cooling white dwarfs. They are found to exist in globular clusters, open clusters, dwarf spheroidal galaxies of the Local Group, OB associations and as field stars.
This book summarises the many advances in observational and theoretical work dedicated to blue straggler stars. Carefully edited extended contributions by well-known experts in the field cover all the relevant aspects of blue straggler stars research: Observations of blue straggler stars in their various environments; Binary stars and formation channels; Dynamics of globular clusters; Interpretation of observational data and comparison with models. The book also offers an introductory chapter on stellar evolution written by the editors of the book.
Table of Content
Field Blue Straggler Stars and Related Mass Transfer Issues.- Blue Stragglers Stars as Probe-Particles of Cluster Internal Dynamics. An Observational Prospective.- Blue Straggler Stars in Nearby Dwarf Galaxies: a Hard Quest.- Dynamical Evolution of Globular Clusters.- Binary Evolution: Wind Mass Transfer.- Binary Evolution: Roche Lobe Overflow.- Blue Straggler Formation in Open Clusters.- Formation Channels for Blue Straggler Stars.- The Multiple Origin of Blue Straggler Stars.- Interpretations of Observations – Individual Stellar Properties.- Blue Straggler Stars in Globular Clusters: Observations, Statistics and Physics.- Stellar Population Modeling Including BSS.About the author
Henri Boffin has been an ESO Paranal Operations Staff Astronomer since August 2010. He obtained his Ph D from the Université Libre de Bruxelles, Belgium, in 1993, working on explaining chemically peculiar red giants, in particular Barium stars. Since then, his research is devoted to the world of close binary stars, their formation and evolution. To this aim, he combines both observational and theoretical work, including hydrodynamical simulations. In the year 2000 he organised the first international workshop on Astro-tomography. His current scientific interests also include symbiotic stars, binary nuclei of planetary nebulae, and Am stars, but more generally, all interacting binary stars.Giovanni Carraro is staff astronomer at ESO Chile since 2007. He got his Ph D in 1996 from Padova University, where he holds a professorship position. He works in the field of resolved stellar populations, mainly star clusters. He is also interested in galaxy formation and the outer solar system. He is author of more than 200 refereed publications. He is the current president of IAU Commission 37 “Star Clusters and Associations”, and serves as scientific editor of the Astrophysical Journal.
Giacomo Beccari works as a staff astronomer at ESO since 2012. He obtained a Ph D in Italy with a thesis on the study of exotic stellar populations in the globular cluster 47 Tucanae which was awarded with the prize ‘Tacchini’ from the Italian Astronomical Society as the best Italian Ph D thesis in astrophysics of 2007. He left Italy in 2008 for a Fellowship in Space Science at ESA/ESTEC (The Netherlands) and in 2010, he moved to ESO as a Research Fellow first and then as a staff astronomer. Giacomo’s research interests are resolved stellar populations in clusters, from the study of binaries and exotic objects (BSS, MSPs, IMBHs, CVs) in galactic globular clusters to protoplanetary disks around young stars in massive star-forming regions.
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