The Multiple Origin of Blue Straggler Stars: Theory vs. Observations

Abstract

In this chapter we review the various suggested channels for the formation and evolution of blue straggler stars (BSSs) in different environments and their observational predictions. These include mass transfer during binary stellar evolution - case A/B/C and D (wind Roche-lobe overflow) mass transfer, stellar collisions during single and binary encounters in dense stellar cluster, and coupled dynamical and stellar evolution of triple systems. We also explore the importance of the BSS and binary dynamics in stellar clusters. We review the various observed properties of BSSs in different environments (halo and bulge BSSs, BSSs in globular clusters and BSSs in old open clusters), and compare the current observations with the theoretical predictions for BSS formation. We try to constrain the likely progenitors and processes that play a role in the formation of BSSs and their evolution. We find that multiple channels of BSS formation are likely to take part in producing the observed BSSs, and we point out the strengths and weaknesses of each the formation channel in respect to the observational constraints. Finally we point out directions to further explore the origin of BSS, and highlight eclipsing binary BSSs as important observational tool.

arXiv commentChapter 11, in Ecology of Blue Straggler Stars, H.M.J. Boffin, G. Carraro & G. Beccari (Eds), Astrophysics and Space Science Library, Springer

References in corpus (31)

• A Survey of Stellar Families: Multiplicity of Solar-Type Stars
• Shrinking binary and planetary orbits by Kozai cycles with tidal friction
• Tertiary companions to close spectroscopic binaries
• Secular evolution of compact binaries near massive black holes: gravitational wave sources and other exotica
• Evolution in Binary and Triple Stars, with an application to SS Lac
• Stellar Collisions During Binary-Binary and Binary-Single Star Interactions
• On the triple origin of blue stragglers
• A Complete N-body Model of the Old Open Cluster M67
• Dynamical age differences among coeval star clusters as revealed by blue stragglers
• Wind Roche-lobe overflow: Application to carbon-enhanced metal-poor stars
• MOCCA code for star cluster simulations - I. Blue Stragglers, first results
• The First Detection of Blue Straggler Stars in the Milky Way Bulge
• The triple evolution dynamical instability: Stellar collisions in the field and the formation of exotic binaries
• WIYN Open Cluster Study XXXII: Stellar Radial Velocities in the Old Open Cluster NGC 188
• The contribution of primordial binaries to the blue straggler population in 47 Tucanae
• Population synthesis of triple systems in the context of mergers of carbon-oxygen white dwarfs
• Mass transfer from a giant star to a main sequence companion and its contribution to long-orbital-period blue stragglers
• Direct N-Body Modeling of the Old Open Cluster NGC 188: A Detailed Comparison of Theoretical and Observed Binary Star and Blue Straggler Populations
• W UMa-type Binary Stars in Globular Clusters
• WIYN Open Cluster Study. XLVIII. The Hard-Binary Population of NGC 188
• An Analytic Technique for Constraining the Dynamical Origins of Multiple Star Systems Containing Merger Products
• Runaway and hypervelocity stars in the Galactic halo: Binary rejuvenation and triple disruption
• Metal-poor Field Blue Stragglers: More Evidence for Mass Transfer
• Stellar Collisions and Blue Straggler Stars in Dense Globular Clusters
• A Comprehensive Catalogue of Variable Stars in the field of 47 Tucanae
• The Origins of Blue Stragglers and Binarity in Globular Clusters
• S1040 in M67: A Post-Mass-Transfer Binary with a Helium-Core White Dwarf
• The Binary Zoo: The Calculation of Production Rates of Binaries Through 2+1 Encounters in Globular Clusters
• A Deep Wide-Field Variable Star Catalog of Omega Centauri
• Fast rotating Blue Stragglers in the globular cluster M4
• Binary planetesimals and their role in planet formation

Cited by in corpus (5)

• UVIT Open Cluster Study. I. Detection of a White Dwarf Companion to a Blue Straggler in M67: Evidence of Formation through Mass Transfer
• Membership lists for 431 open clusters in Gaia DR2 using extreme deconvolution gaussian mixture models
• UOCS.VI. UVIT/AstroSat detection of low-mass white dwarf companions to 4 more blue stragglers in M67
• A-type stars in the Canada-France Imaging Survey II. Tracing the height of the disc at large distances with Blue Stragglers
• Evolutionary history of four binary blue stragglers from the globular clusters ωCen, M55, 47 Tuc and NGC 6752