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N-body simulations with live stellar evolution

Church, Ross P. LU orcid ; Tout, Christopher A. and Hurley, Jarrod R. (2009) In Publications of the Astronomical Society of Australia 26(1). p.92-102
Abstract

An N-body code containing live stellar evolution through combination of the software packages nbody6 and stars is presented. Operational details of the two codes are outlined and the changes that have been made to combine them discussed. We have computed the evolution of clusters of 104 stars using the combined code and we compare the results with those obtained using nbody6 and the synthetic stellar evolution code sse. We find that, providing the physics package within stars is set up correctly to match the parameters of the models used to construct sse, the results are very similar. This provides a good indication that the new code is working well. We also demonstrate how this physics can be changed simply in the new code... (More)

An N-body code containing live stellar evolution through combination of the software packages nbody6 and stars is presented. Operational details of the two codes are outlined and the changes that have been made to combine them discussed. We have computed the evolution of clusters of 104 stars using the combined code and we compare the results with those obtained using nbody6 and the synthetic stellar evolution code sse. We find that, providing the physics package within stars is set up correctly to match the parameters of the models used to construct sse, the results are very similar. This provides a good indication that the new code is working well. We also demonstrate how this physics can be changed simply in the new code with convective overshooting as an example. Similar changes in sse would require considerable reworking of the model fits. We conclude by outlining proposed future development of the code to include more complete models of single stars and binary star systems.

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author
; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Methods: N-body simulations, Methods: numerical, Open clusters and associations: general, Stars: evolution, Stars: mass-loss
in
Publications of the Astronomical Society of Australia
volume
26
issue
1
pages
11 pages
publisher
CSIRO Publishing
external identifiers
  • scopus:67849109908
ISSN
1323-3580
DOI
10.1071/AS08062
language
English
LU publication?
no
id
ffef3b94-b731-490c-a782-5c856ab3105a
date added to LUP
2019-06-05 14:14:58
date last changed
2025-04-04 15:16:44
@article{ffef3b94-b731-490c-a782-5c856ab3105a,
  abstract     = {{<p>An N-body code containing live stellar evolution through combination of the software packages nbody6 and stars is presented. Operational details of the two codes are outlined and the changes that have been made to combine them discussed. We have computed the evolution of clusters of 10<sup>4</sup> stars using the combined code and we compare the results with those obtained using nbody6 and the synthetic stellar evolution code sse. We find that, providing the physics package within stars is set up correctly to match the parameters of the models used to construct sse, the results are very similar. This provides a good indication that the new code is working well. We also demonstrate how this physics can be changed simply in the new code with convective overshooting as an example. Similar changes in sse would require considerable reworking of the model fits. We conclude by outlining proposed future development of the code to include more complete models of single stars and binary star systems.</p>}},
  author       = {{Church, Ross P. and Tout, Christopher A. and Hurley, Jarrod R.}},
  issn         = {{1323-3580}},
  keywords     = {{Methods: N-body simulations; Methods: numerical; Open clusters and associations: general; Stars: evolution; Stars: mass-loss}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{1}},
  pages        = {{92--102}},
  publisher    = {{CSIRO Publishing}},
  series       = {{Publications of the Astronomical Society of Australia}},
  title        = {{N-body simulations with live stellar evolution}},
  url          = {{http://dx.doi.org/10.1071/AS08062}},
  doi          = {{10.1071/AS08062}},
  volume       = {{26}},
  year         = {{2009}},
}