Query : 1997A&A...328..253K

1997A&A...328..253K - Astronomy and Astrophysics, volume 328, 253-260 (1997/12-1)

Do T Tauri stars rotate differentially?


Abstract (from CDS):

We compute the rotation profile of a T Tauri star from the balance between the different components of the Reynolds stress and the meridional circulation. We first use a simple model to study the influence of the meridional flow on the differential rotation and vice versa. A more realistic model is then presented, which includes the stratification of the turbulence derived from a stellar model. We find that for a strictly spherical star without any latitudinal gradients in temperature, density and pressure the rotation is very close to the rigid-body state. We conclude that the stellar magnetic field must be generated by an α2- rather than an α{OMEGA}-dynamo. It must thus have non-axisymmetric geometry and will not show cyclic behaviour.

Abstract Copyright:

Journal keyword(s): hydrodynamics - turbulence - stars: magnetic fields - stars: pre-main sequence - stars: rotation

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 V* V410 Tau Or* 04 18 31.1081296680 +28 27 16.155955728   12.13 10.75 8.45 9.408 K3Ve 444 0
2 HD 283572 Or* 04 21 58.8484815456 +28 18 06.512641416   9.80 9.03 9.14   G5IVe 276 0

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