SIMBAD references

2022MNRAS.510.5226E - Mon. Not. R. Astron. Soc., 510, 5226-5245 (2022/March-2)

The winds of young Solar-type stars in Coma Berenices and Hercules-Lyra.

EVENSBERGET D., CARTER B.D., MARSDEN S.C., BROOKSHAW L., FOLSOM C.P. and SALMERON R.

Abstract (from CDS):

We present wind models of 10 young Solar-type stars in the Hercules-Lyra association and the Coma Berenices cluster aged around ∼0.26 and ∼0.58 Gyr, respectively. Combined with five previously modelled stars in the Hyades cluster, aged ∼0.63 Gyr, we obtain a large atlas of 15 observationally based wind models. We find varied geometries, multi-armed structures in the equatorial plane, and a greater spread in quantities such as the angular momentum loss. In our models, we infer variation of a factor of ∼6 in wind angular momentum loss {dot}J and a factor of ∼2 in wind mass-loss {dot}M based on magnetic field geometry differences when adjusting for the unsigned surface magnetic flux. We observe a large variation factor of ∼4 in wind pressure for an Earth-like planet; we attribute this to variations in the 'magnetic inclination' of the magnetic dipole axis with respect to the stellar axis of rotation. Within our models, we observe a tight correlation between unsigned open magnetic flux and angular momentum loss. To account for possible underreporting of the observed magnetic field strength we investigate a second series of wind models where the magnetic field has been scaled by a factor of 5. This gives {dot}M∝B0.4 and {dot}J∝B1.0 as a result of pure magnetic scaling.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): stars: magnetic field - stars: rotation - stars: solar-type - stars: winds, outflows - Sun: evolution - Sun: heliosphere

Simbad objects: 24

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