Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 482, Issue 1, Pages 1231-1246Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/sty2671
Keywords
asteroseismology; binaries: eclipsing; binaries: spectroscopic; stars: fundamental parameters; stars: interiors; stars: oscillations
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Funding
- European Research Council (ERC) under the European Union [670519: MAMSIE]
- Research Foundation - Flanders (FWO)
- Flemish Government - department EWI
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The simultaneous presence of variability due to both pulsations and binarity is no rare phenomenon. Unfortunately, the complexities of dealing with even one of these sources of variability individually means that the other signal is often treated as a nuisance and discarded. However, both types of variability offer means to probe fundamental stellar properties in robust ways through asteroseismic and binary modelling. We present an efficient methodology that includes both binary and asteroseismic information to estimate fundamental stellar properties based on a grid-based modelling approach. We report parameters for three gravity mode pulsating Kepler binaries, such as mass, radius, age, as well the mass of the convective core and location of the overshoot region. We discuss the presence of parameter degeneracies and the way our methodology deals with them. We provide asteroseismically calibrated isochrone-clouds to the community; these are a generalization of isochrones when allowing for different values of the core overshooting in the two components of the binary.
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