An Advanced N-body Model for Interacting Multiple Stellar Systems

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10367586" target="_blank" >RIV/00216208:11320/17:10367586 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3847/1538-4365/aa7207" target="_blank" >http://dx.doi.org/10.3847/1538-4365/aa7207</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4365/aa7207" target="_blank" >10.3847/1538-4365/aa7207</a>

Result language
angličtina
Original language name
An Advanced N-body Model for Interacting Multiple Stellar Systems
Original language description
We construct an advanced model for interacting multiple stellar systems in which we compute all trajectories with a numerical N-body integrator, namely the Bulirsch-Stoer from the SWIFT package. We can then derive various observables: astrometric positions, radial velocities, minima timings (TTVs), eclipse durations, interferometric visibilities, closure phases, synthetic spectra, spectral energy distribution, and even complete light curves. We use a modified version of the Wilson-Devinney code for the latter, in which the instantaneous true phase and inclination of the eclipsing binary are governed by the N-body integration. If all of these types of observations are at one's disposal, a joint chi(2) metric and an optimization algorithm (a simplex or simulated annealing) allow one to search for a global minimum and construct very robust models of stellar systems. At the same time, our N-body model is free from artifacts that may arise if mutual gravitational interactions among all components are not self-consistently accounted for. Finally, we present a number of examples showing dynamical effects that can be studied with our code and we discuss how systematic errors may affect the results (and how to prevent this from happening).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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