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A New Technique to Measure Magnetic Field Strength in Active Stars

Published online by Cambridge University Press:  12 April 2016

J. Sánchez Almeida  and
R. J.García López
J. Sánchez Almeida
Affiliation:
Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain
R. J.García López
Affiliation:
Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain

Abstract

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We explore the use of the flux difference between the lines Fe I 5250 Å and Fe I 5247 Å as a technique to measure photospheric magnetic fields in late-type stars. The technique developed takes into account all the LTE physics of the problem, assuming a radial and homogeneous magnetic field distribution over the stellar surface. Some test calculations, in order to prove the feasibility of the method, are shown.

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 414 - 416
Copyright
Copyright © Springer-Verlag 1991

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