Features of Gaia DR3 Spectroscopic Binaries I. Tidal circularization of Main-Sequence Stars

Abstract

Previous studies pointed out that many observed samples of short-period binaries display a cutoff period, $P_{\mathrm{cut}}$, such that almost all binaries with periods shorter than $P_{\mathrm{cut}}$ have circular orbits. This feature is probably due to long-term circularization processes induced by tidal interaction between the two stars of each binary. It seemed as if coeval main-sequence (MS) samples of open clusters display $P_{\mathrm{cut}}$ that depends on the sample age. Using the unprecedentedly large sample of MS spectroscopic orbits recently released by $\text{Gaia}$ we have found that the $P_{\mathrm{cut}}$ does not depend on the stellar age but, instead, varies with stellar temperature, decreasing linearly from $6.5$ day at $T_{\mathrm{eff}}\sim 5700$ K to $\sim 2.5$ day at $6800$ K. $P_{\mathrm{cut}}$ was derived by a new algorithm that relied on clear upper envelopes displayed in the period-eccentricity diagrams. Our $P_{\mathrm{cut}}$ determines both the border between the circular and eccentric binaries and the location of the upper envelope. The results are inconsistent with the theory which assumes circularization occurs during the stellar MS phase, a theory that was adopted by many studies. The circularization has probably taken place at the pre-main-sequence phase, as suggested already in 1989 by Zahn and Bouchet, and later by Khaluillin and Khaluillina in 2011. Our results suggest that the weak dependence of $P_{\mathrm{cut}}$ on the cluster age is not significant, and/or might be due to the different temperatures of the samples. If indeed true, this has far-reaching implications for the theory of binary and exoplanet circularization, synchronization, and alignment.

13 pages, 12 figures, 2 tables. Accepted for publication in MNRAS

References in corpus (43)

• The Transiting Exoplanet Survey Satellite
• Measuring the rotation period distribution of field M-dwarfs with Kepler
• Tidal Evolution of Close-in Extra-Solar Planets
• Migration and the formation of systems of hot super-Earths and Neptunes
• 4MOST: Project overview and information for the First Call for Proposals
• The Zwicky Transient Facility Catalog of Periodic Variable Stars
• Tidal friction in close-in satellites and exoplanets. The Darwin theory re-visited
• Mergers and Obliquities in Stellar Triples
• The Orbit of WASP-12b is Decaying
• POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations
• Photometric Amplitude Distribution of Stellar Rotation of Kepler KOIs-Indication for Spin-Orbit Alignment of Cool Stars and High Obliquity for Hot Stars
• Tidal dissipation in binary systems
• A Preponderance of Perpendicular Planets
• On the tidal origin of hot Jupiter stellar obliquity trends
• Decaying Orbit of the Hot Jupiter WASP-12b: Confirmation with TESS Observations
• Stellar triples on the edge; Comprehensive overview of the evolution of destabilised triples leading to stellar and binary exotica
• Bias and robustness of eccentricity estimates from radial velocity data
• TESS Revisits WASP-12: Updated Orbital Decay Rate and Constraints on Atmospheric Variability
• 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 Circularization of Binaries by Resonance Locking I: The Importance of the Pre-Main-Sequence
• Tidal dissipation due to inertial waves can explain the circularization periods of solar-type binaries
• Rotation Distributions around the Kraft Break with TESS and Kepler: The Influences of Age, Metallicity, and Binarity
• Tidal flows with convection: frequency-dependence of the effective viscosity and evidence for anti-dissipation
• Temperature and Distance Dependence of Tidal Circularization in Close Binaries: A Catalog of Eclipsing Binaries in the Southern Hemisphere Observed by the TESS Satellite
• Long-term Spectroscopic Survey of the Pleiades Cluster: The Binary Population
• Examining the orbital decay targets KELT-9 b, KELT-16 b and WASP-4 b, and the transit-timing variations of HD 97658 b
• TESS Input Catalog versions 8.1 and 8.2: Phantoms in the 8.0 Catalog and How to Handle Them
• The Pseudosynchronization of Binary Stars Undergoing Strong Tidal Interactions
• The Value-Added Catalog of ASAS-SN Eclipsing Binaries: Parameters of Thirty Thousand Detached Systems
• Gaia Spectroscopic Orbits Validated with LAMOST and GALAH Radial Velocities
• The circularization timescales of late-type binary stars
• A Tale of Two Circularization Periods
• Measuring the orbit shrinkage rate of hot Jupiters due to tides
• Mass-ratio distribution of extremely low-mass white dwarf binaries
• Transit Timing Variation of XO-3b: Evidence for Tidal Evolution of Hot Jupiter with High Eccentricity
• Induced differential rotation and mixing in asynchronous binary stars
• Study of the mass-ratio distribution of spectroscopic binaries. I. A novel algorithm
• Magnetic effect on equilibrium tides and its influence on the orbital evolution of binary systems
• Stellar rotation rates in Kepler eccentric (heartbeat) binaries obtained from r-mode signatures
• The Equilibrium Tide: An Updated Prescription for Population Synthesis Codes
• Searching for orbital decay in a heartbeat star system KIC 3766353
• Detecting and Monitoring Tidal Dissipation of Hot Jupiters in the Era of SiTian

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