N Themeßl
Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation
Themeßl, N; Hekker, S; Southworth, J; Beck, P G; Pavlovski, K; Tkachenko, A; Angelou, G C; Ball, W H; Barban, C; Corsaro, E; Elsworth, Y; Handberg, R; Kallinger, T
Authors
S Hekker
Dr John Taylor j.k.taylor@keele.ac.uk
P G Beck
K Pavlovski
A Tkachenko
G C Angelou
W H Ball
C Barban
E Corsaro
Y Elsworth
R Handberg
T Kallinger
Abstract
Based on 1460?d of Kepler observations we perform a thorough asteroseismic study to probe the stellar parameters and evolutionary stages of three red giants in eclipsing binary systems. We present the first detailed analysis of individual oscillation modes of the red-giant components of KIC?8410637, KIC?5640750, and KIC?9540226. We obtain estimates of their asteroseismic masses, radii, mean densities, and logarithmic surface gravities by using the asteroseismic scaling relations as well as grid-based modelling. As these red giants are in double-lined eclipsing binaries, it is possible to derive their independent dynamical masses and radii from the orbital solution and compare it with the seismically inferred values. For KIC?5640750 we compute the first spectroscopic orbit based on both components of this system. We use high-resolution spectroscopic data and light curves of the three systems to determine up-to-date values of the dynamical stellar parameters. With our comprehensive set of stellar parameters we explore consistencies between binary analysis and asteroseismic methods, and test the reliability of the well-known scaling relations. For the three red giants under study, we find agreement between dynamical and asteroseismic stellar parameters in cases where the asteroseismic methods account for metallicity, temperature, and mass dependence as well as surface effects. We are able to attain agreement from the scaling laws in all three systems if we use Delta v ref,emp = 130.8 plus or minus u Hz instead of the usual solar reference value.
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 27, 2018 |
Online Publication Date | May 1, 2018 |
Publication Date | 2018-08 |
Publicly Available Date | May 26, 2023 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 478 |
Issue | 4 |
Pages | 4669 -4696 |
DOI | https://doi.org/10.1093/mnras/sty1113 |
Keywords | asteroseismology, binaries, eclipsing, stars, individual, KIC?8410637, KIC?5640750, KIC?9540226, interiors, oscillations |
Publisher URL | http://dx.doi.org/10.1093/mnras/sty1113 |
Files
sty1113.pdf
(4.5 Mb)
PDF
You might also like
REDISCUSSION OF ECLIPSING BINARIES. PAPER 13: THE F-TYPE TWIN SYSTEM IT CASSIOPEIAE
(2023)
Journal Article
Tidally perturbed gravity-mode pulsations in a sample of close eclipsing binaries
(2023)
Journal Article
REDISCUSSION OF ECLIPSING BINARIES. PAPER 12: THE F-TYPE TWIN SYSTEM ZZ BOOTIS
(2023)
Journal Article
Transit timing variation analysis of the low-mass brown dwarf KELT-1 b
(2023)
Journal Article
Downloadable Citations
About Keele Repository
Administrator e-mail: research.openaccess@keele.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search