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Estimation of Stellar Magnetic Fields from Line-Strengths: Refined Hensberge-De Loore Method

Published online by Cambridge University Press:  12 April 2016

Yoichi Takeda*
Affiliation:
Institute of Astronomy, The University of Tokyo, Mitaka, Tokyo, 181Japan

Abstract

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A method for determining the strength of a stellar magnetic field is presented, which is based on the requirement that the scatter of abundances from various lines should be minimized on the best choice of the field strength and the microturbulence. This procedure is applied to o Peg and cool Ap stars, showing that the resulting solutions are consistent with those derived from other methods.

Type
II. Magnetic Fields: Observations and Theories
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Adelman, S.J. 1973a, ApJ, 183, 95.CrossRefGoogle Scholar
Adelman, S.J. 1973b, ApJS, 26, 1.Google Scholar
Adelman, S.J. 1988, MNRAS, 230, 671.Google Scholar
Fuhr, J.R., Martin, G.A., and Wiese, W.L. 1988, Atomic Transition Probabilities–Iron Through Nickel, J. Phys. Chem. Ref. Data Vol. 17, Suppl. No. 4, (American Chemical Society and American Institute of Physics for National Bureau of Standards).Google Scholar
Hensberge, H., and De Loore, C. 1974, A&A, 37, 367.Google Scholar
Kurucz, R.L. 1979, ApJS, 40, 1.Google Scholar
Kuznetsova, T.N. 1987, Sov. Astron. Lett., 13, 212.Google Scholar
Martin, G.A., Fuhr, J.R., and Wiese, W.L. 1988, Atomic Transition Probabilities–Scandium Through Manganese J. Phys. Chem. Ref. Data Vol. 17, Suppl. No. 3, (American Chemical Society and American Institute of Physics for National Bureau of Standards).Google Scholar
Mathys, G., and Lanz, T. 1990, A&A, 230, L21.Google Scholar
Ryabchikova, T.A., and Piskunov, N.E. 1986, in Upper Main Sequence Stars with Anomalous Abundances, eds. Cowley, C.R., Dworetsky, M.M., and Megessier, C., (D. Reidel Publishing Company, Dordrecht), p.45. Google Scholar
Takeda, Y. 1991, PASJ, 43, 823.Google Scholar
Takeda, Y. 1992, PASJ, submitted.Google Scholar