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Solar-type stars, which shed angular momentum via magnetised stellar winds, enter the main sequence with a wide range of rotational periods $P_\text{rot}$. This initially wide range of rotational periods contracts and has mostly vanished by…

Solar-type stars form with a wide range of rotation rates. A wide range persists until a stellar age of 0.6 Gyr, after which solar-type stars exhibit Skumanich spin-down. Rotational evolution models incorporating polytropic stellar winds…

Solar and Stellar Astrophysics · Physics 2024-01-29 D. Evensberget , A. A. Vidotto

In the present paper, we model the wind of solar analogues at different ages to investigate the evolution of the solar wind. Recently, it has been suggested that winds of solar type stars might undergo a change in properties at old ages,…

Solar and Stellar Astrophysics · Physics 2018-05-02 D. Ó Fionnagáin , A. A. Vidotto

Stellar winds govern the spin-down of Solar-type stars as they age, and play an important role in determining planetary habitability, as powerful winds can lead to atmospheric erosion. We calculate three-dimensional stellar wind models for…

Solar and Stellar Astrophysics · Physics 2021-07-14 Dag Evensberget , Bradley D. Carter , Stephen C. Marsden , Leigh Brookshaw , Colin P. Folsom

We present a model for the rotational evolution of a young, solar-mass star interacting magnetically with an accretion disk. As in a previous paper (Paper I), the model includes changes in the star's mass and radius as it descends the…

Solar and Stellar Astrophysics · Physics 2015-06-03 Sean P. Matt , Giovanni Pinzon , Thomas P. Greene , Ralph E. Pudritz

Angular momentum evolution in low-mass stars is determined by initial conditions during star formation, stellar structure evolution, and the behaviour of stellar magnetic fields. Here we show that the empirical picture of angular momentum…

Solar and Stellar Astrophysics · Physics 2015-06-03 Ansgar Reiners , Subhanjoy Mohanty

Stellar winds govern the angular momentum evolution of solar-like stars throughout their main-sequence lifetime. The efficiency of this process depends on the geometry of the star's magnetic field. There has been a rapid increase recently…

Solar and Stellar Astrophysics · Physics 2016-11-11 Moira Jardine , Aline Vidotto , Victor See

We developed angular momentum evolution models for 0.5 and 0.8 $M_{\odot}$ stars. The parametric models include a new wind braking law based on recent numerical simulations of magnetised stellar winds, specific dynamo and mass-loss rate…

Solar and Stellar Astrophysics · Physics 2015-05-13 Florian Gallet , Jérôme Bouvier

Aims: We study the evolution of stellar rotation and wind properties for low-mass main-sequence stars. Our aim is to use rotational evolution models to constrain the mass loss rates in stellar winds and to predict how their properties…

Solar and Stellar Astrophysics · Physics 2015-05-21 C. P. Johnstone , M. Güdel , I. Brott , T. Lüftinger

Context. Stellar spin-down is the result of a complex process involving rotation, dynamo, wind and magnetism. Multi-wavelength surveys of solar-like stars have revealed the likely existence of relationships between their rotation, X-ray…

Solar and Stellar Astrophysics · Physics 2020-04-01 Jérémy Ahuir , Allan-Sacha Brun , Antoine Strugarek

Nearly half a century has passed since the initial indications that stellar rotation slows while chromospheric activity weakens with a power-law dependence on age, the so-called Skumanich relations. Subsequent characterization of the…

Solar and Stellar Astrophysics · Physics 2019-03-01 Travis S. Metcalfe , Ricky Egeland

Solar-like stars (M < 1.3 Msun) lose angular momentum through their magnetized winds. The resulting evolution of the surface rotation period, which can be directly measured photometrically, has the potential to provide an accurate indicator…

Solar and Stellar Astrophysics · Physics 2020-04-29 F. Spada , A. C. Lanzafame

The surface rotation rates of young solar-type stars decrease rapidly with age from the end of the pre-main sequence though the early main sequence. This suggests that there is also an important change in the dynamos operating in these…

Solar and Stellar Astrophysics · Physics 2015-06-17 C. P. Folsom , P. Petit , J. Bouvier , J. -F. Donati , J. Morin

We propose a simple interpretation of the rotation period data for solar- and late-type stars. The open cluster and Mt. Wilson star observations suggest that rotating stars lie primarily on two sequences, initially called I and C. Some…

Astrophysics · Physics 2009-11-07 Sydney A. Barnes

As a cool star evolves, it loses mass and angular momentum due to magnetized stellar winds which affect its rotational evolution. This change has consequences that range from the alteration of its activity to influences over the atmosphere…

Solar and Stellar Astrophysics · Physics 2023-07-26 Judy Chebly , Julián D. Alvarado-Gómez , Katja Poppenhäger , Cecilia Garraffo

We present new models for the rotational evolution of solar-like stars between 1 Myr and 10 Gyr with the aim to reproduce the distributions of rotational periods observed for star forming regions and young open clusters within this age…

Solar and Stellar Astrophysics · Physics 2015-06-16 Florian Gallet , Jérôme Bouvier

Stellar winds are believed to be the dominant factor in spin down of stars over time. However, stellar winds of solar analogs are poorly constrained due to the challenges in observing them. A great improvement has been made in the last…

Solar and Stellar Astrophysics · Physics 2015-06-17 Ofer Cohen , Jeremy J. Drake

The observed mass-age-rotation relationship in open clusters shows the progressive development of a slow-rotators sequence. The observed clustering on this sequence suggests that it corresponds to some equilibrium or asymptotic condition…

Solar and Stellar Astrophysics · Physics 2015-11-18 Alessandro C. Lanzafame , Federico Spada

Radiation-driven winds heavily influence the evolution and fate of massive stars. Feedback processes from these winds impact the properties of the interstellar medium of their host galaxies. The dependence of mass loss on stellar properties…

We use magnetograms of 8 solar analogues of ages 30~Myr to 3.6~Gyr obtained from Zeeman Doppler Imaging (ZDI) and taken from the literature, together with two solar magnetograms, to drive magnetohydrodynamical (MHD) wind simulations and…

Solar and Stellar Astrophysics · Physics 2018-04-11 Quentin Pognan , Cecilia Garraffo , Ofer Cohen , Jeremy J. Drake
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