Transition of latitudinal differential rotation as a possible cause of weakened magnetic braking of solar-type stars

Abstract

We investigate the role of latitudinal differential rotation (DR) in the spin evolution of solar-type stars. Recent asteroseismic observation detected the strong equator-fast DR in some solar-type stars. Numerical simulations show that the strong equator-fast DR is a typical feature of young fast-rotating stars and that this tendency is gradually reduced with stellar age. Incorporating these properties, we develop a model for the long-term evolution of stellar rotation. The magnetic braking is assumed to be regulated dominantly by the rotation rate in the low-latitude region. Therefore, in our model, stars with the equator-fast DR spin down more efficiently than those with the rigid-body rotation. We calculate the evolution of stellar rotation in ranges of stellar mass, $0.9{\mathrm{M}}_{\odot }\le M\le 1.2{\mathrm{M}}_{\odot }$, and metallicity, $0.5{\mathrm{Z}}_{\odot }\le Z\le 2{\mathrm{Z}}_{\odot }$, where ${\mathrm{M}}_{\odot }$ and ${\mathrm{Z}}_{\odot }$ are the solar mass and metallicity, respectively. Our model, using the observed torque in the present solar wind, nicely explains both the current solar rotation and the average trend of the rotation of solar-type stars, including the dependence on metallicity. In addition, our model naturally reproduces the observed trend of the weakened magnetic braking in old slowly rotating solar-type stars because strong equator-fast DR becomes reduced. Our results indicate that LDR and its transition are essential factors that control the stellar spin down.

arXiv comment20 pages, 16 figures, 3 table, accepted to MNRAS

References in corpus (75)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• The Solar Cycle
• The stellar activity-rotation relationship and the evolution of stellar dynamos
• Ages for illustrative field stars using gyrochronology: viability, limitations and errors
• Evolution of the Solar Activity over Time and Effects on Planetary Atmospheres: I. High-energy Irradiances (1-1700 A)
• Rotation Periods of 34,030 Kepler Main-Sequence Stars: The Full Autocorrelation Sample
• On the rotational evolution of solar- and late-type stars, its magnetic origins, and the possibility of stellar gyrochronology
• Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
• Measuring the rotation period distribution of field M-dwarfs with Kepler
• Stellar magnetism: empirical trends with age and rotation
• Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
• Testing a Predictive Theoretical Model for the Mass Loss Rates of Cool Stars
• Standing on the shoulders of Dwarfs: the Kepler asteroseismic LEGACY sample II - radii, masses, and ages
• The Mass-Dependence of Angular Momentum Evolution in Sun-Like Stars
• Angular Momentum Transport in Stellar Interiors
• Rotation and magnetism of Kepler pulsating solar-like stars. Towards asteroseismically calibrated age-rotation relations
• The active lives of stars: a complete description of rotation and XUV evolution of F, G, K, and M dwarfs
• Magnetic Braking Formulation for Sun-Like Stars: Dependence on Dipole Field Strength and Rotation Rate
• Can Superflares Occur on Our Sun?
• Stellar Winds on the Main-Sequence II: the Evolution of Rotation and Winds
• From solar-like to anti-solar differential rotation in cool stars
• The Sun in Time: Activity and Environment
• Calibrating Gyrochronology using Kepler Asteroseismic targets
• Superflares on Solar-Type Stars Observed with Kepler II. Photometric Variability of Superflare-Generating Stars : A Signature of Stellar Rotation and Starspots
• Coronal Evolution of the Sun in Time: High-Resolution X-Ray Spectroscopy of Solar Analogs with Different Ages
• Asteroseismology of solar-type stars
• Asteroseismic measurement of slow, nearly-uniform surface-to-core rotation in the main sequence F star KIC 9244992
• Rotational mixing in low-mass stars : I Effect of the mu-gradients in main sequence and subgiant Pop I stars
• First grids of low-mass stellar models and isochrones with self-consistent treatment of rotation : From 0.2 to 1.5 M_\odot at 7 metallicities from PMS to TAMS
• Rotating models of young solar-type stars : Exploring braking laws and angular momentum transport processes
• The evolution of the solar wind
• Nearly-uniform internal rotation of solar-like main-sequence stars revealed by space-based asteroseismology and spectroscopic measurements
• Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars
• Models of Metal Poor Stars with Gravitational Settling and Radiative Accelerations: I. Evolution and Abundance Anomalies
• High-resolution calculation of the solar global convection with the reduced speed of sound technique: II. Near surface shear layer with the rotation
• Reconciling solar and stellar magnetic cycles with nonlinear dynamo simulations
• Weakened magnetic braking supported by asteroseismic rotation rates of Kepler dwarfs
• Estimating magnetic filling factors from Zeeman-Doppler magnetograms
• Reynolds stress and heat flux in spherical shell convection
• The Effect of Combined Magnetic Geometries on Thermally Driven Winds II: Dipolar, Quadrupolar and Octupolar Topologies
• Accretion-Powered Stellar Winds III: Spin Equilibrium Solutions
• Saturation of Stellar Winds from Young Suns
• Powering Stellar Magnetism: Energy Transfers in Cyclic Dynamos of Sun-like Stars
• Magnetic Evolution and the Disappearance of Sun-like Activity Cycles
• Lifetimes and Emergence/Decay Rates of Star Spots on Solar-type Stars Estimated by Kepler Data in Comparison with Those of Sunspots
• The Impact of Metallicity on the Evolution of Rotation and Magnetic Activity of Sun-Like Stars
• The dependence of stellar mass and angular momentum losses on latitude and on active region and dipolar magnetic fields
• The BAyesian STellar Algorithm (BASTA): a fitting tool for stellar studies, asteroseismology, exoplanets, and Galactic archaeology
• Age dependence of wind properties for solar type stars: a 3d study
• Solar differential rotation reproduced with high-resolution simulation
• Generation solar-like differential rotation
• Impact of Stellar Superflares on Planetary Habitability
• Radio emission and mass loss rate limits of four young solar-type stars
• The Origin of Weakened Magnetic Braking in Old Solar Analogs
• The Effect of Magnetic Variability on Stellar Angular Momentum Loss I: The Solar Wind Torque During Sunspot Cycles 23 & 24
• On rising magnetic flux tube and formation of sunspots in a deep domain
• Alfvén-wave driven magnetic rotator winds from low-mass stars I: rotation dependences of magnetic braking and mass-loss rate
• Photometric variability as a proxy for magnetic activity and its dependence on metallicity
• Stellar Winds and Coronae of Low-mass Pop. II/III Stars
• Temporal Evolution of Spatially-Resolved Individual Star Spots on a Planet-Hosting Solar-type Star: Kepler 17
• The Dynamics of the Solar Radiative Zone
• Latitudinal differential rotation in the solar analogues 16 Cyg A and B
• Direct Detection of Solar Angular Momentum Loss with the Wind Spacecraft
• Shape of a slowly rotating star measured by asteroseismology
• Universal Scaling Laws for Solar and Stellar Atmospheric Heating: Catalog of Power-law Index between Solar Activity Proxies and Various Spectral Irradiances
• Inferring the Rotation Period Distribution of Stars from their Projected Rotation Velocities and Radii: Application to late-F/early-G Kepler Stars
• The Solar Wind Angular Momentum Flux as Observed by Parker Solar Probe
• On the Evolution of Rotational Modulation Amplitude in Solar-mass Main-sequence Stars
• Meta-analysis of photometric and asteroseismic measurements of stellar rotation periods: the Lomb-Scargle periodogram, autocorrelation function, wavelet and rotational splitting analysis for 92 Kepler asteroseismic targets
• Asteroid Magnetization from the Early Solar Wind
• Effect of Differential Rotation on Magnetic Braking of Low-Mass and Solar-Like Stars: A Proof-of-Concept Study

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