Tidally excited oscillations in MACHO80.7443.1718: Changing amplitudes and frequencies, high-frequency tidally excited mode, and a decrease in the orbital period

@article{KolaczekSzymanski2021TidallyEO,
  title={Tidally excited oscillations in MACHO80.7443.1718: Changing amplitudes and frequencies, high-frequency tidally excited mode, and a decrease in the orbital period},
  author={Piotr A. Kolaczek-Szyma'nski and Andrzej Pigulski and Marcin Wrona and Milena Ratajczak and A. Udalski},
  journal={Astronomy \& Astrophysics},
  year={2021}
}
Context. Eccentric ellipsoidal variables (also known as heartbeat stars) is a class of eccentric binaries in which proximity effects, and tidal distortion due to time-dependent tidal potential in particular, lead to measurable photometric variability close to the periastron passage. Varying tidal potential may also give rise to tidally excited oscillations (TEOs), which are forced eigenmodes with frequencies close to the integer multiples of the orbital frequency. TEOs may play an important… Expand

References

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Kołaczek-Szymański et al.: Tidally excited oscillations in MACHO
  • MNRAS,
  • 2020
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