Journal article
Dynamics of primordial binary stars in multiple-population globular clusters
Proceedings of the International Astronomical Union, v 10(S312), pp 237-238
Aug 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We have performed a survey of N-body simulations to explore the dynamics of primordial binaries in multiple-population globular clusters. We show that, as a consequence of the initial differences between the spatial distribution of first-generation (FG) and second-generation (SG) stars, SG binaries are disrupted more efficiently than FG binaries. The effects of dynamical evolution on the surviving binaries produces a difference between the SG and the FG binary binding energy distribution with the SG population characterized by a larger fraction of high binding energy (more bound) binaries. We also explore the evolution of the radial variation of the SG-to-FG binary number ratio and find that although the global binary fraction decreases more rapidly for the SG population, the local binary fraction measured in the cluster inner regions may still be dominated by SG binaries.
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Details
- Title
- Dynamics of primordial binary stars in multiple-population globular clusters
- Creators
- Jongsuk Hong - 1Department of Astronomy, Indiana University, Bloomington, IN, 47401, USAEnrico Vesperini - 1Department of Astronomy, Indiana University, Bloomington, IN, 47401, USAAntonio Sollima - 2INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, ItalySteve McMillan - Drexel UniversityFranca D'Antona - 4INAF – Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monteporzio, ItalyAnnibale D'Ercole - 2INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy
- Contributors
- Y. Meiron (Editor)S. Li (Editor)F.-K. Liu (Editor)R. Spurzem (Editor)
- Publication Details
- Proceedings of the International Astronomical Union, v 10(S312), pp 237-238
- Publisher
- Cambridge University Press
- Number of pages
- 2
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000452768300051
- Scopus ID
- 2-s2.0-84960348391
- Other Identifier
- 1107078725; 9781107078727; 991019170321504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics