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Peer-reviewedCC BY 4.0The Astrophysical Journal

Tidal Dissipation from Circularization in Kepler Binaries

  • Joshua Schussler1
  • Torsha Majumder2
  • Kaloyan Penev1
  1. 1The University of Texas at Dallas
  2. 2The University of Lethbridge
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Abstract

Understanding tidal dissipation is a requisite step for explaining the evolution of systems such as short-period binaries. This understanding has not yet been achieved, and in fact there are many different approaches to modeling tides. By using Bayesian analysis on a system-by-system basis, we provide additional constraints on dissipation for 105 short-period Sunlike Kepler binaries. We account for period-dependent Q and stellar evolution, and propagate observational uncertainties to uncertainties in our constraints. We find a group constraint of log Q * ′ ≈ 6.75 , with no apparent dependence on tidal period. We also do not detect mass dependence for Q . Our inferred prescription for the tidal dissipation successfully reproduces the unexpected overlap between almost perfectly circular and significantly noncircular orbits in binaries of Sunlike stars reported by J. J. Zanazzi.

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Cite

BibTeXRIS
BibTeX
@article{schussler2026tidal,
  title = {{Tidal Dissipation from Circularization in Kepler Binaries}},
  author = {Joshua Schussler and Torsha Majumder and Kaloyan Penev},
  journal = {The Astrophysical Journal},
  year = {2026},
  month = oct,
  doi = {10.3847/1538-4357/aeac1a},
  url = {https://iopscience.iop.org/article/10.3847/1538-4357/aeac1a},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Tidal Dissipation from Circularization in Kepler Binaries
AU  - Joshua Schussler
AU  - Torsha Majumder
AU  - Kaloyan Penev
PY  - 2026
DA  - 2026/10/30
JO  - The Astrophysical Journal
DO  - 10.3847/1538-4357/aeac1a
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/aeac1a
AB  - Understanding tidal dissipation is a requisite step for explaining the evolution of systems such as short-period binaries. This understanding has not yet been achieved, and in fact there are many different approaches to modeling tides. By using Bayesian analysis on a system-by-system basis, we provide additional constraints on dissipation for 105 short-period Sunlike Kepler binaries. We account for period-dependent Q and stellar evolution, and propagate observational uncertainties to uncertainties in our constraints. We find a group constraint of log Q * ′ ≈ 6.75 , with no apparent dependence on tidal period. We also do not detect mass dependence for Q . Our inferred prescription for the tidal dissipation successfully reproduces the unexpected overlap between almost perfectly circular and significantly noncircular orbits in binaries of Sunlike stars reported by J. J. Zanazzi.
SN  - 1538-4357
SN  - 0004-637X
ER  -