Modeling the corona of AB Doradus

Details Modeling the corona of AB Doradus Modeling the corona of AB Doradus

2001-09-24

arxiv.org/abs/astro-ph/0109430v2

Astronomy and Astrophysics

Astrophysics

4 figures, 10 pages. To appear in the proceedings of the 12th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun. (

Scientific paper

We present a technique that combines Zeeman Doppler imaging (ZDI) principles with a potential field mapping prescription in order to gain more information about the surface field topology of rapid rotators. This technique is an improvement on standard ZDI, which can sometimes suffer from the suppression of one vector component due to the effects of stellar inclination, poor phase coverage or lack of flux from dark areas on the surface. Defining a relationship beween the different vector components allows information from one component to compensate for reduced information in another. We present simulations demonstrating the capability of this technique and discuss its prospects.

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