Damping rates and frequency corrections of Kepler LEGACY stars

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Standard

Damping rates and frequency corrections of Kepler LEGACY stars. / Houdek, G.; Lund, M. N.; Trampedach, R.; Christensen-Dalsgaard, J.; Handberg, R.; Appourchaux, T.

I: Monthly Notices of the Royal Astronomical Society, Bind 487, Nr. 1, 07.2019, s. 595-608.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Houdek, G, Lund, MN, Trampedach, R, Christensen-Dalsgaard, J, Handberg, R & Appourchaux, T 2019, 'Damping rates and frequency corrections of Kepler LEGACY stars', Monthly Notices of the Royal Astronomical Society, bind 487, nr. 1, s. 595-608. https://doi.org/10.1093/mnras/stz1211

APA

Houdek, G., Lund, M. N., Trampedach, R., Christensen-Dalsgaard, J., Handberg, R., & Appourchaux, T. (2019). Damping rates and frequency corrections of Kepler LEGACY stars. Monthly Notices of the Royal Astronomical Society, 487(1), 595-608. https://doi.org/10.1093/mnras/stz1211

CBE

Houdek G, Lund MN, Trampedach R, Christensen-Dalsgaard J, Handberg R, Appourchaux T. 2019. Damping rates and frequency corrections of Kepler LEGACY stars. Monthly Notices of the Royal Astronomical Society. 487(1):595-608. https://doi.org/10.1093/mnras/stz1211

MLA

Houdek, G. o.a.. "Damping rates and frequency corrections of Kepler LEGACY stars". Monthly Notices of the Royal Astronomical Society. 2019, 487(1). 595-608. https://doi.org/10.1093/mnras/stz1211

Vancouver

Houdek G, Lund MN, Trampedach R, Christensen-Dalsgaard J, Handberg R, Appourchaux T. Damping rates and frequency corrections of Kepler LEGACY stars. Monthly Notices of the Royal Astronomical Society. 2019 jul;487(1):595-608. https://doi.org/10.1093/mnras/stz1211

Author

Houdek, G. ; Lund, M. N. ; Trampedach, R. ; Christensen-Dalsgaard, J. ; Handberg, R. ; Appourchaux, T. / Damping rates and frequency corrections of Kepler LEGACY stars. I: Monthly Notices of the Royal Astronomical Society. 2019 ; Bind 487, Nr. 1. s. 595-608.

Bibtex

@article{3c994487af7f43d2b624a3b43601d804,
title = "Damping rates and frequency corrections of Kepler LEGACY stars",
abstract = "Linear damping rates and modal frequency corrections of radial oscillation modes in selected LEGACY main-sequence stars are estimated by means of a non-adiabatic stability analysis. The selected stellar sample covers stars observed by Kepler with a large range of surface temperatures and surface gravities. Anon-local, time-dependent convectionmodel is perturbed to assess stability against pulsation modes. The mixing-length parameter is calibrated to the surface-convection-zone depth of a stellar model obtained from fitting adiabatic frequencies to the LEGACY observations, and two of the non-local convection parameters are calibrated to the corresponding LEGACY linewidth measurements. The remaining non-local convection parameters in the 1D calculations are calibrated so as to reproduce profiles of turbulent pressure and of the anisotropy of the turbulent velocity field of corresponding 3D hydrodynamical simulations. The atmospheric structure in the 1D stability analysis adopts a temperature-optical-depth relation derived from 3D hydrodynamical simulations. Despite the small number of parameters to adjust, we find good agreement with detailed shapes of both turbulent pressure profiles and anisotropy profiles with depth, and with damping rates as a function of frequency. Furthermore, we find the absolute modal frequency corrections, relative to a standard adiabatic pulsation calculation, to increase with surface temperature and surface gravity.",
keywords = "convection, hydrodynamics, turbulence, Sun: oscillations, 3D CONVECTION SIMULATIONS, SOLAR PULSATIONAL STABILITY, STELLAR STRUCTURE MODELS, MIXING-LENGTH THEORY, EQUATION-OF-STATE, OSCILLATIONS, EIGENFREQUENCIES, ASTEROSEISMOLOGY, APPROXIMATION, IMPROVEMENTS",
author = "G. Houdek and Lund, {M. N.} and R. Trampedach and J. Christensen-Dalsgaard and R. Handberg and T. Appourchaux",
year = "2019",
month = jul,
doi = "10.1093/mnras/stz1211",
language = "English",
volume = "487",
pages = "595--608",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - Damping rates and frequency corrections of Kepler LEGACY stars

AU - Houdek, G.

AU - Lund, M. N.

AU - Trampedach, R.

AU - Christensen-Dalsgaard, J.

AU - Handberg, R.

AU - Appourchaux, T.

PY - 2019/7

Y1 - 2019/7

N2 - Linear damping rates and modal frequency corrections of radial oscillation modes in selected LEGACY main-sequence stars are estimated by means of a non-adiabatic stability analysis. The selected stellar sample covers stars observed by Kepler with a large range of surface temperatures and surface gravities. Anon-local, time-dependent convectionmodel is perturbed to assess stability against pulsation modes. The mixing-length parameter is calibrated to the surface-convection-zone depth of a stellar model obtained from fitting adiabatic frequencies to the LEGACY observations, and two of the non-local convection parameters are calibrated to the corresponding LEGACY linewidth measurements. The remaining non-local convection parameters in the 1D calculations are calibrated so as to reproduce profiles of turbulent pressure and of the anisotropy of the turbulent velocity field of corresponding 3D hydrodynamical simulations. The atmospheric structure in the 1D stability analysis adopts a temperature-optical-depth relation derived from 3D hydrodynamical simulations. Despite the small number of parameters to adjust, we find good agreement with detailed shapes of both turbulent pressure profiles and anisotropy profiles with depth, and with damping rates as a function of frequency. Furthermore, we find the absolute modal frequency corrections, relative to a standard adiabatic pulsation calculation, to increase with surface temperature and surface gravity.

AB - Linear damping rates and modal frequency corrections of radial oscillation modes in selected LEGACY main-sequence stars are estimated by means of a non-adiabatic stability analysis. The selected stellar sample covers stars observed by Kepler with a large range of surface temperatures and surface gravities. Anon-local, time-dependent convectionmodel is perturbed to assess stability against pulsation modes. The mixing-length parameter is calibrated to the surface-convection-zone depth of a stellar model obtained from fitting adiabatic frequencies to the LEGACY observations, and two of the non-local convection parameters are calibrated to the corresponding LEGACY linewidth measurements. The remaining non-local convection parameters in the 1D calculations are calibrated so as to reproduce profiles of turbulent pressure and of the anisotropy of the turbulent velocity field of corresponding 3D hydrodynamical simulations. The atmospheric structure in the 1D stability analysis adopts a temperature-optical-depth relation derived from 3D hydrodynamical simulations. Despite the small number of parameters to adjust, we find good agreement with detailed shapes of both turbulent pressure profiles and anisotropy profiles with depth, and with damping rates as a function of frequency. Furthermore, we find the absolute modal frequency corrections, relative to a standard adiabatic pulsation calculation, to increase with surface temperature and surface gravity.

KW - convection

KW - hydrodynamics

KW - turbulence

KW - Sun: oscillations

KW - 3D CONVECTION SIMULATIONS

KW - SOLAR PULSATIONAL STABILITY

KW - STELLAR STRUCTURE MODELS

KW - MIXING-LENGTH THEORY

KW - EQUATION-OF-STATE

KW - OSCILLATIONS

KW - EIGENFREQUENCIES

KW - ASTEROSEISMOLOGY

KW - APPROXIMATION

KW - IMPROVEMENTS

U2 - 10.1093/mnras/stz1211

DO - 10.1093/mnras/stz1211

M3 - Journal article

VL - 487

SP - 595

EP - 608

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 1

ER -