Measuring Tidal Friction in Main-Sequence Sun-Like Stars

ORAL

Abstract

Tidal friction plays an important role in shaping the orbits of binary stars and exoplanet systems with short orbital periods. However, the physical processes that produce this friction are currently not well understood, with multiple competing theoretical models in circulation. Our research group is taking advantage of the recent explosion of observational data to provide empirical measurements of tidal dissipation for comparison to theory and/or directly usable to calculate the tidal evolution of binary stars and exoplanet systems. I will present the gradually emerging picture of tidal friction in Sun-like stars from recent efforts by our group .

*This research is/was supported by NASA grants 80NSSC18K1009 and 80NSSC23K1486.The authors acknowledge the Texas Advanced Computing Center (TACC) at The University of Texas at Austin for providing high performance computing resources.

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Publication: Ruskin Patel, Kaloyan Penev and Joshua Schussler. "Constraints on tidal quality factor in Kepler eclipsing binaries using tidal synchronization: a frequency-dependent approach". MNRAS 524.4 Oct. 2023, pages 5575–5590

Ruskin Patel and Kaloyan Penev. "Constraining tidal quality factor using spin period in eclipsing binaries". MNRAS 512.3 May 2022, pages 3651–3661.

Kaloyan M. Penev and Joshua A. Schussler. "Comprehensive Bayesian modelling of tidal circularization in open cluster binaries part I: M 35, NGC 6819, and NGC 188". MNRAS 516.4 Nov. 2022, pages 6145–6171.

Kaloyan Penev, L. G. Bouma, Joshua N. Winn and Joel D. Hartman. "Empirical Tidal Dissipation in Exoplanet Hosts From Tidal Spin-up". AJ 155.4 Apr. 2018, p. 165.

Presenters

  • Kaloyan M Penev

    • University of Texas at Dallas

Authors

  • Kaloyan M Penev

    • University of Texas at Dallas

  • Joshua A Schussler

    • University of Texas at Dallas