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Stellar Zeeman Analyses: Effects of Multi-component Atmospheres

Published online by Cambridge University Press:  12 April 2016

G.W. Marcy ,
G. Basri  and
J.A. Valenti
G.W. Marcy
Affiliation:
Astronomy Department, Univ. of California, Berkeley, CA 94720, USA
G. Basri
Affiliation:
Astronomy Department, Univ. of California, Berkeley, CA 94720, USA
J.A. Valenti
Affiliation:
Astronomy Department, Univ. of California, Berkeley, CA 94720, USA

Abstract

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We simulate the radiative transfer of Zeeman-broadened lines in an active star containing both quiet and flux-tube regions. A traditional one-atmosphere Zeeman analysis of these synthetic lines yields magnetic field measurements systematically inaccurate by up to 40%. However, two atmospheric components alone cannot reproduce the observed line strengths, luminosities or photometric constancy of active stars.

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 407 - 410
Copyright
Copyright © Springer-Verlag 1991

References

Basri, G., Marcy, G.W.: 1988, Astrophys. J. 330, 274 CrossRefGoogle Scholar
Blackwell, D.E., Petford, A.D., Simmons, G.J.: 1982, Mon. Not. R. Astron. Soc. 210, 595 CrossRefGoogle Scholar
Maltby, P., Avrett, E.H., Carlsson, M., Kjeldseth-Moe, O., Kurucz, R.L., Loeser, R.: 1986, Astrophys. J. 306, 284 CrossRefGoogle Scholar
Marcy, G.W., Basri, G.: 1989, Astrophys. J. 345, 480 CrossRefGoogle Scholar
Mathys, G., Solanki, S.K.: 1989, Astron. Astrophys. 208, 189 Google Scholar
Saar, S.: 1988, Astrophys. J. 324, 441 CrossRefGoogle Scholar
Solanki, S.K.: 1986, Astron. Astrophys. 168, 311 Google Scholar
Solanki, S.K., 1987, in The Role of Fine-Scale Magnetic fields on the Structure of the Solar Atmosphere, ed. Schroter, E.-H., Vazquez, M., and Wyller, A.A. (Cambridge University Press), p. 67 Google Scholar
Walton, S.R., 1987, Astrophys. J. 312, 909 CrossRefGoogle Scholar