Discovery of Tidally Perturbed Pulsations in the Eclipsing Binary U Gru: A 
Crucial System for Tidal Asteroseismology

Bowman, Dominic M.; Johnston, Cole; Tkachenko, Andrew; Mkrtichian, David E.; Gunsriwiwat, Khemsinan; Aerts, Conny

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学術論文

Discovery of Tidally Perturbed Pulsations in the Eclipsing Binary U Gru: A Crucial System for Tidal Asteroseismology

MPS-Authors

Bowman, Dominic M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Johnston, Cole
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tkachenko, Andrew
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mkrtichian, David E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gunsriwiwat, Khemsinan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Aerts, Conny
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2019ApJ...883L..26B
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引用

Bowman, D. M., Johnston, C., Tkachenko, A., Mkrtichian, D. E., Gunsriwiwat, K., & Aerts, C. (2019). Discovery of Tidally Perturbed Pulsations in the Eclipsing Binary U Gru: A Crucial System for Tidal Asteroseismology. The Astrophysical Journal, 883.

引用: https://hdl.handle.net/21.11116/0000-0005-D405-6

要旨

The interior physics of stars is currently not well constrained for early-type stars. This is particularly pertinent for multiple systems, as binary interaction becomes more prevalent for more massive stars, which strongly affects their evolution. High-precision photometry from the Transiting Exoplanet Survey Satellite (TESS) mission offers the opportunity to remedy the dearth of observations of pulsating stars that show evidence of binary interaction, specifically pulsating mass- accreting components of semi-detached Algol-type eclipsing binary (oEA) systems. We present the TESS light curve of the circular eclipsing binary system U Gru (TIC 147201138), which shows evidence of free heat- driven pressure modes and a series of tidally perturbed pressure modes. We highlight the asteroseismic potential of studying pulsating stars in binary systems, and demonstrate how tidal asteroseismology can be applied to infer the influence of binary interaction on stellar structure.