Correcting Stellar Oscillation Frequencies for Near-Surface Effects
TLDR
In this paper, the authors used data for the Sun to derive an empirical correction for the near-surface offset, which they then applied to three other stars (α Cen A, α Cen B, and β Hyi).Abstract:
In helioseismology, there is a well-known offset between observed and computed oscillation frequencies. This offset is known to arise from improper modeling of the near-surface layers of the Sun, and a similar effect must occur for models of other stars. Such an effect impedes progress in asteroseismology, which involves comparing observed oscillation frequencies with those calculated from theoretical models. Here, we use data for the Sun to derive an empirical correction for the near-surface offset, which we then apply to three other stars (α Cen A, α Cen B, and β Hyi). The method appears to give good results, in particular providing an accurate estimate of the mean density of each star.read more
Citations
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Modules for Experiments in Stellar Astrophysics (MESA): Planets, Oscillations, Rotation, and Massive Stars
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Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
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TL;DR: Modules for Experiments in Stellar Astrophysics (MESA) as discussed by the authors can now simultaneously evolve an interacting pair of differentially rotating stars undergoing transfer and loss of mass and angular momentum, greatly enhancing the prior ability to model binary evolution.
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The PLATO 2.0 mission
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TL;DR: Observations of gravity-mode period spacings in red giants that permit a distinction between evolutionary stages to be made, using high-precision photometry obtained by the Kepler spacecraft to measure oscillations in several hundred red giants.
References
More filters
Journal ArticleDOI
The Current State of Solar Modeling
Jørgen Christensen-Dalsgaard,Werner Däppen,S. V. Ajukov,E. Anderson,H. M. Antia,Sarbani Basu,V. A. Baturin,Gabrielle Berthomieu,Brian Chaboyer,S. M. Chitre,Arthur N. Cox,Pierre Demarque,J. Donatowicz,W. A. Dziembowski,M. Gabriel,Douglas Gough,David B. Guenther,Joyce A. Guzik,J. W. Harvey,Frank Hill,G. Houdek,Carlos A. Iglesias,Alexander G. Kosovichev,John Leibacher,Pierre Morel,C. R. Proffitt,Janine Provost,J. Reiter,Edward J. Rhodes,Forrest J. Rogers,Ian W. Roxburgh,Michael Thompson,Roger K. Ulrich +32 more
TL;DR: Data from the GONG project and other helioseismic experiments reveal subtle errors in the models, such as an excess in sound speed just beneath the convection zone, which is plausible that the sound-speed differences reflect weak mixing in stellar interiors.
Book
Hipparcos, the New Reduction of the Raw Data
TL;DR: The Hipparcos mission as discussed by the authors was the first attempt to estimate the position and velocities of a single star from its photometric pass bands, which were then used to calculate the position of the satellite.
Journal ArticleDOI
Solar-like Oscillations in α Centauri B
Hans Kjeldsen,Timothy R. Bedding,R. Paul Butler,Jørgen Christensen-Dalsgaard,László L. Kiss,Chris McCarthy,Geoffrey W. Marcy,C. G. Tinney,Jason T. Wright +8 more
TL;DR: In this paper, a method of measuring oscillation amplitudes from heavily smoothed power density spectra was introduced, from which they estimated amplitudes for α Cen α and B, β Hyi, δ Pav, and the Sun.
Journal ArticleDOI
Solar-like oscillations in alpha Centauri B
Hans Kjeldsen,Timothy R. Bedding,R. Paul Butler,Joergen Christensen-Dalsgaard,László L. Kiss,Chris McCarthy,Geoffrey W. Marcy,C. G. Tinney,Jason T. Wright +8 more
TL;DR: In this article, velocity observations of the star alpha Cen B from two sites, allowing them to identify 37 oscillation modes with l=0-3. The mode lifetime, as measured from the scatter of the oscillation frequencies about a smooth trend, is similar to that in the Sun.
Journal ArticleDOI
Physics of solar-like oscillations
TL;DR: In this article, the authors provide a brief overview of the basic properties of stellar oscillations, and of the information about stellar properties that may be inferred from them, concentrating mostly on the low-degree modes for which information may be expected for distant stars.
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