A Tale of Two Circularization Periods

Abstract

We re-analyze the pristine eclipsing binary data from the $\text{Kepler}$ and TESS missions, focusing on eccentricity measurements at short orbital periods to emperically constrain tidal circularization. We find an average circularization period of  6 days, as well as a short circularization period of $\sim$3 days for the $\text{Kepler}$/TESS field binaries. We argue previous spectroscopic binary surveys reported longer circularization periods due to small sample sizes, which were contaminated by an abundance of binaries with circular orbits out to $\sim$10 days, but we re-affirm their data shows a difference between the eccentricity distributions of young ($<$1 Gyr) and old ($>$3 Gyr) binaries. Our work calls into question the long circularization periods quoted often in the literature.

Main text 9 pages, 13 including appendix, 8 Figures, submitted to ApJL

References in corpus (18)

• The Transiting Exoplanet Survey Satellite
• Mergers and Obliquities in Stellar Triples
• Heartbeat Stars, Tidally Excited Oscillations, and Resonance Locking
• The Joker: A custom Monte Carlo sampler for binary-star and exoplanet radial velocity data
• Tidal dissipation in evolving low-mass and solar-type stars with predictions for planetary orbital decay
• Observational Evidence for Tidal Interaction in Close Binary Systems
• The EBLM Project IV. Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot-Jupiters
• An Observational Study of Tidal Synchronization in Solar-Type Binary Stars in the Open Clusters M35 and M34
• WIYN Open Cluster Study. LX. Spectroscopic Binary Orbits in NGC 6819
• Convective turbulent viscosity acting on equilibrium tidal flows: new frequency scaling of the effective viscosity
• Tidal dissipation in rotating fluid bodies: the presence of a magnetic field
• Stellar Radial Velocities in the Old Open Cluster M67 (NGC 2682). II. The Spectroscopic Binary Population
• On a new formulation for energy transfer between convection and fast tides with application to giant planets and solar type stars
• Tidal dissipation due to inertial waves can explain the circularization periods of solar-type binaries
• Tidal flows with convection: frequency-dependence of the effective viscosity and evidence for anti-dissipation
• Efficiency of tidal dissipation in slowly rotating fully convective stars or planets
• The circularization timescales of late-type binary stars
• Resonant tidal responses in rotating fluid bodies: global modes hidden beneath localized wave beams

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• Comprehensive Bayesian Modeling of Tidal Circularization in Open Cluster Binaries part I: M 35, NGC 6819, NGC 188
• DMPP-3: confirmation of short-period S-type planet(s) in a compact eccentric binary star system, and warnings about long-period RV planet detections
• Constraints on Tidal Quality Factor in Kepler Eclipsing Binaries using Tidal Synchronization: A Frequency-Dependent Approach