Solving the mode identification problem in asteroseismology of F stars observed with Kepler

Timothy R. White; Timothy R. Bedding; Michael Gruberbauer; Othman Benomar; Dennis Stello; Thierry Appourchaux; William J. Chaplin; Jorgen Christensen-Dalsgaard; Yvonne P. Elsworth; Rafael A. García; Saskia Hekker; Daniel Huber; Hans Kjeldsen; Benoît Mosser; Karen Kinemuchi; Fergal Mullally; Martin Still

doi:10.1088/2041-8205/751/2/L36

Solving the mode identification problem in asteroseismology of F stars observed with Kepler

Timothy R. White, Timothy R. Bedding, Michael Gruberbauer, Othman Benomar, Dennis Stello, Thierry Appourchaux, William J. Chaplin, Jorgen Christensen-Dalsgaard, Yvonne P. Elsworth, Rafael A. García, Saskia Hekker, Daniel Huber, Hans Kjeldsen, Benoît Mosser, Karen Kinemuchi, Fergal Mullally, Martin Still

Center for Space Science

Research output: Contribution to journal › Article › peer-review

Abstract

Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler stars is masked by increased line widths. The absolute mode frequencies, encapsulated in the asteroseismic variable ε, can help solve this impasse because the values of ε implied by the two possible mode identifications are distinct. We find that the correct ε can be deduced from the effective temperature and the line widths and we apply these methods to a sample of solar-like oscillators observed with Kepler.

Original language	English (US)
Article number	L36
Journal	Astrophysical Journal Letters
Volume	751
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/751/2/L36
State	Published - Jun 1 2012

Keywords

stars: fundamental parameters
stars: interiors
stars: oscillations

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/2041-8205/751/2/L36

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White, T. R., Bedding, T. R., Gruberbauer, M., Benomar, O., Stello, D., Appourchaux, T., Chaplin, W. J., Christensen-Dalsgaard, J., Elsworth, Y. P., García, R. A., Hekker, S., Huber, D., Kjeldsen, H., Mosser, B., Kinemuchi, K., Mullally, F., & Still, M. (2012). Solving the mode identification problem in asteroseismology of F stars observed with Kepler. Astrophysical Journal Letters, 751(2), Article L36. https://doi.org/10.1088/2041-8205/751/2/L36

White, TR, Bedding, TR, Gruberbauer, M, Benomar, O, Stello, D, Appourchaux, T, Chaplin, WJ, Christensen-Dalsgaard, J, Elsworth, YP, García, RA, Hekker, S, Huber, D, Kjeldsen, H, Mosser, B, Kinemuchi, K, Mullally, F & Still, M 2012, 'Solving the mode identification problem in asteroseismology of F stars observed with Kepler', Astrophysical Journal Letters, vol. 751, no. 2, L36. https://doi.org/10.1088/2041-8205/751/2/L36

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abstract = "Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler stars is masked by increased line widths. The absolute mode frequencies, encapsulated in the asteroseismic variable ε, can help solve this impasse because the values of ε implied by the two possible mode identifications are distinct. We find that the correct ε can be deduced from the effective temperature and the line widths and we apply these methods to a sample of solar-like oscillators observed with Kepler.",

keywords = "stars: fundamental parameters, stars: interiors, stars: oscillations",

author = "White, {Timothy R.} and Bedding, {Timothy R.} and Michael Gruberbauer and Othman Benomar and Dennis Stello and Thierry Appourchaux and Chaplin, {William J.} and Jorgen Christensen-Dalsgaard and Elsworth, {Yvonne P.} and Garc{\'i}a, {Rafael A.} and Saskia Hekker and Daniel Huber and Hans Kjeldsen and Beno{\^i}t Mosser and Karen Kinemuchi and Fergal Mullally and Martin Still",

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AU - White, Timothy R.

AU - Bedding, Timothy R.

AU - Gruberbauer, Michael

AU - Benomar, Othman

AU - Stello, Dennis

AU - Appourchaux, Thierry

AU - Chaplin, William J.

AU - Christensen-Dalsgaard, Jorgen

AU - Elsworth, Yvonne P.

AU - García, Rafael A.

AU - Hekker, Saskia

AU - Huber, Daniel

AU - Kjeldsen, Hans

AU - Mosser, Benoît

AU - Kinemuchi, Karen

AU - Mullally, Fergal

AU - Still, Martin

PY - 2012/6/1

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N2 - Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler stars is masked by increased line widths. The absolute mode frequencies, encapsulated in the asteroseismic variable ε, can help solve this impasse because the values of ε implied by the two possible mode identifications are distinct. We find that the correct ε can be deduced from the effective temperature and the line widths and we apply these methods to a sample of solar-like oscillators observed with Kepler.

AB - Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler stars is masked by increased line widths. The absolute mode frequencies, encapsulated in the asteroseismic variable ε, can help solve this impasse because the values of ε implied by the two possible mode identifications are distinct. We find that the correct ε can be deduced from the effective temperature and the line widths and we apply these methods to a sample of solar-like oscillators observed with Kepler.

KW - stars: fundamental parameters

KW - stars: interiors

KW - stars: oscillations

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JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

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M1 - L36

ER -

Solving the mode identification problem in asteroseismology of F stars observed with Kepler

Abstract

Keywords

ASJC Scopus subject areas

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