Stellar magnetic fields: observations and nonlinear modeling
Abstract
Magnetic fields on a global scale are observed in a wide variety of astrophysical objects, spanning from planets, stars, and accretion disks to galaxies. These magnetic fields are anything but passive, taking part in the dynamics of their hosts, resulting for example in the familiar activity phenomena of the Sun, which also affect life here on the Earth. We have a long time series of temperature mapping and photometry of an active late-type star II Peg. II Peg is known as one of the most active RS Cvn stars representing the Sun at a younger age. We are trying to establish the link between the Sun and the more active rapidly rotating stars and compare the results to the dynamo models of the Sun. Preliminary results show some resemblance to the dynamo solutions.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2009
- Bibcode:
- 2009AGUFMSH13A1506L
- Keywords:
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- 7524 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Magnetic fields;
- 7539 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Stellar astronomy;
- 7544 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Stellar interiors and dynamo theory