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Comparison of Stellar Oscillations and Activity Data to Infer Internal Rotation

Published online by Cambridge University Press:  12 April 2016

Gaetano Belvedere
Gaetano Belvedere*
Affiliation:
Istituto di Astronomia, Università di Catania, Italy

Abstract

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Recently it has beeen suggested that the latitude distribution of the main surface features of solar activity is intimately related to the angular velocity profile inside the Sun through the working of a MHD dynamo in the boundary layer between the convective and the radiative zones (Belvedere et al. 1991).

Although the present observational capabilities are not very encouraging, here we want to point out, in the framework of the analogy to the Sun (solar-stellar connection), that space observations of surface distribution and latitudinal migration of active regions on stellar surfaces, which could be carried out in this decade with more sophisticated techniques, may conversely allow us to infer the rotation profile, and consequently the angular momentum distribution, in stellar interiors. This methodology may in principle be considered alternate or complementary to the classical one based on observation of acoustic oscillations.

Type
VII. Activity, a break of spherical symmetry
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 675 - 678
Copyright
Copyright © Astronomical Society of the Pacific 1993

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