A semi-empirical model for magnetic braking of solar-type stars

Abstract

We develop new angular momentum evolution models for stars with masses of $0.5$ to $1.6{\mathrm{M}}_{\odot }$ and from the pre-main-sequence (\rm PMS) through the end of their main-sequence (\rm MS) lifetime. The parametric models include magnetic braking based on numerical simulations of magnetised stellar winds, mass loss rate prescription, core-envelope decoupling as well as disk locking phenomena. We have also accounted for recent developments in modelling dramatically weakened magnetic braking in stars more evolved than the Sun. We fit the free parameters in our model by comparing model predictions to rotational distributions of a number of stellar clusters as well as individual field stars. Our model reasonably successfully reproduces the rotational behaviour of stars during the \rm PMS phase to the zero-age main-sequence (\rm ZAMS) spin up, sudden \rm ZAMS spin down, and convergence of the rotation rates afterwards. We find that including core-envelope decoupling improves our models especially for low-mass stars at younger ages. In addition, by accounting for the almost complete suppression of magnetic braking at slow spin periods, we provide better fits to observations of stellar rotations compared to previous models.

18 pages, 13 figures, 4 tables, Monthly Notices of the Royal Astronomical Society, stx2039

References in corpus (16)

• Stellar magnetism: empirical trends with age and rotation
• A spin-down clock for cool stars from observations of a 2.5-billion-year-old cluster
• The effect of magnetic topology on thermally-driven winds: towards a general formulation of the braking law
• Stellar Winds on the Main-Sequence II: the Evolution of Rotation and Winds
• Improved angular momentum evolution model for solar-like stars II. Exploring the mass dependence
• CESAM: a free code for stellar evolution calculations
• Accretion-Powered Stellar Winds II: Numerical Solutions for Stellar Wind Torques
• The Monitor project: Rotation of low-mass stars in the open cluster NGC 2516
• Indications for an influence of Hot Jupiters on the rotation and activity of their host stars
• CSI 2264: Investigating rotation and its connection with disk accretion in the young open cluster NGC 2264
• Powerful Winds from Low-Mass Stars: V374 Peg
• The evolution of stars in the Taurus-Auriga T association
• A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars
• The Metastable Dynamo Model of Stellar Rotational Evolution
• Evolution of Exoplanets and their Parent Stars
• Magnetic topologies of cool stars

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