Topic
Binary system
About: Binary system is a research topic. Over the lifetime, 5788 publications have been published within this topic receiving 97882 citations.
Papers published on a yearly basis
Papers
More filters
187 citations
Journal Article•
185 citations
183 citations
Book•
01 Nov 1992
TL;DR: In this paper, the mass-ratio distribution of spectroscopic binaries in open clusters was derived for a single-lined red giant binary system and the eccentricity evolution of a binary embedded in a disk.
Abstract: 1. N-body simulations of primordial binaries and tidal capture in open clusters 2. When and how can binary data test similar models? 3. Statistical analysis of single-lined red giant spectroscopic binaries 4. The formation of binary stars 5. Distribution and evolution of orbital elements for 1 M primaries 6. Tidal circularization of short period binaries 7. Composite-spectrum binaries 8. Orbital elements for field late-type binaries 9. Evidences for interaction among wide binary systems: to Ba or not to Ba? 10. Spectroscopic binaries in the open cluster M67 11. Spectroscopic binaries in the halo 12. Eccentricity evolution of a binary embedded in a disk 13. The eccentricity distribution of pre-main sequence binaries 14. A new algorithm to derive the mass-ratio distribution of spectroscopic binaries in open clusters 15. Are barium dwarfs progenitors of barium giants 16. RZ Eridani as a constraint on synchronization and circularization times 17. Ekman layers and tidal synchronization of binary stars 18. The distribution of mass ration in late-type main-sequence binary systems 19. The dynamical evolution of G-type main sequence binaries 20. Present state of the tidal theory 21. Infrared companions: clues to binary star formation 22. The distribution of cutoff periods with age: an observational constraint on tidal circularization theory.
181 citations
TL;DR: It is found that the hot Algol-type binaries display overall acceptable χ2, confirming the conservative assumption, while the cool Algols show much less acceptable ρ2, suggesting the need for more free parameters, such as mass and angular momentum loss.
Abstract: We undertake a comparison of observed Algol-type binaries with a library of computed Case A binary evolution tracks. The library consists of 5500 binary tracks with various values of initial primary mass M10, mass ratio q0, and period P0, designed to sample the phase-space of Case A binaries in the range -0.10 ≤ log M10 ≤ 1.7. Each binary is evolved using a standard code with the assumption that both total mass and orbital angular momentum are conserved. This code follows the evolution of both stars to the point where contact or reverse mass transfer occurs. The resulting binary tracks show a rich variety of behavior that we sort into several subclasses of case A and case B. We present the results of this classification, the final mass ratio, and the fraction of time spent in Roche Lobe overflow for each binary system. The conservative assumption under which we created this library is expected to hold for a broad range of binaries, where both components have spectra in the range G0 to B1 and luminosity classes III to V. We gather a list of relatively well-determined, observed hot Algol-type binaries meeting this criterion, as well as a list of cooler Algol-type binaries, for which we expect significant dynamo-driven mass loss and angular momentum loss. We fit each observed binary to our library of tracks using a χ2-minimizing procedure. We find that the hot Algols display overall acceptable χ2, confirming the conservative assumption, while the cool Algols show much less acceptable χ2, suggesting the need for more free parameters, such as mass and angular momentum loss.
180 citations