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Binary population and spectral synthesis version 2.1 : construction, observational verification and new results
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Eldridge, J. J., Stanway, Elizabeth R., Xiao, L., McClelland, L. A. S., Taylor, G., Ng, M., Greis, Stephanie M. L. and Bray, J. C. (2017) Binary population and spectral synthesis version 2.1 : construction, observational verification and new results. Publications of the Astronomical Society of Australia . doi:10.1017/pasa.2017.51 (In Press)
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Official URL: https://doi.org/10.1017/pasa.2017.51
Abstract
The Binary Population and Spectral Synthesis (BPASS) suite of binary stellar evolution models and synthetic stellar populations provides a framework for the physically motivated analysis of both the integrated light from distant stellar populations and the detailed properties of those nearby. We present a new version 2.1 data release of these models, detailing the methodology by which BPASS incorporates binary mass transfer and its effect on stellar evolution pathways, as well as the construction of simple stellar populations. We demonstrate key tests of the latest BPASS model suite demonstrating its ability to reproduce the colours and derived properties of resolved stellar populations, including well- constrained eclipsing binaries. We consider observational constraints on the ratio of massive star types and the distribution of stellar remnant masses. We describe the identification of supernova progenitors in our models, and demonstrate a good agreement to the properties of observed progenitors. We also test our models against photometric and spectroscopic observations of unresolved stellar populations, both in the local and distant Universe, finding that binary models provide a self-consistent explanation for observed galaxy properties across a broad redshift range. Finally, we carefully describe the limitations of our models, and areas where we expect to see significant improvement in future versions.
| Item Type: | Journal Article | ||||||
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| Subjects: | Q Science > QB Astronomy | ||||||
| Divisions: | Faculty of Science > Physics | ||||||
| Journal or Publication Title: | Publications of the Astronomical Society of Australia | ||||||
| Publisher: | Cambridge | ||||||
| ISSN: | 1323-3580 | ||||||
| Official Date: | 16 November 2017 | ||||||
| Dates: |
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| DOI: | 10.1017/pasa.2017.51 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | In Press | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Open Access Version: |
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