期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 883, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/ab3fb2
关键词
asteroseismology; stars: evolution; stars: individual (U Gru); stars: massive; stars: oscillations; stars: rotation
资金
- Association of Universities for Research in Astronomy, Inc., under NASA [NAS5-26555]
- NASA Office of Space Science [NAG5-7584]
- NASA Explorer Program
- European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme [670519]
- KU Leuven Research Council [C16/18/005: PARADISE]
- Research Foundation Flanders (FWO) [G0A2917N, G0H5416N]
- BELgian federal Science Policy Office (BELSPO) through PRODEX grant PLATO
- National Astronomical Research Institute of Thailand (NARIT), Ministry of Science and Technology of Thailand
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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