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

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.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0005-D405-6 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0005-D406-5
Genre: Zeitschriftenartikel

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externe Referenz:
https://ui.adsabs.harvard.edu/abs/2019ApJ...883L..26B (beliebiger Volltext)
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 Urheber:
Bowman, Dominic M.1, Autor
Johnston, Cole1, Autor
Tkachenko, Andrew1, Autor
Mkrtichian, David E.1, Autor
Gunsriwiwat, Khemsinan1, Autor
Aerts, Conny1, Autor
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

Inhalt

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Schlagwörter: asteroseismology stars: evolution stars: individual: U Gru stars: massive stars: oscillations stars: rotation
 Zusammenfassung: 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.

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 Datum: 2019
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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Titel: The Astrophysical Journal
Genre der Quelle: Zeitschrift
 Urheber:
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 883 Artikelnummer: - Start- / Endseite: - Identifikator: -