Journal Article

Catalogue of averaged stellar effective magnetic fields – II. Re-discussion of chemically peculiar A and B stars

V. D. Bychkov, L. V. Bychkova and J. Madej

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 394, issue 3, pages 1338-1350
Published in print April 2009 | ISSN: 0035-8711
Published online April 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.14227.x
Catalogue of averaged stellar effective magnetic fields – II. Re-discussion of chemically peculiar A and B stars

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This paper presents a catalogue and the method of determining averaged quadratic effective magnetic fields 〈Be〉 for 1212 main-sequence and giant stars, and 11 white dwarf stars. The catalogue includes stars that are members of several open clusters. We have compiled measurements of the longitudinal magnetic field for those stars, which were scattered in the existing literature. A new parameter, magnetization (MA), has been defined, and we present values of MA for stars of various spectral classes. Our sample includes a subset of 610 chemically peculiar early-type stars. We confirm the conclusion of our previous study that the number distribution of all chemically peculiar stars versus the averaged magnetic field strength is described by a decreasing exponential function. Relations of this type also hold for stars of all the analysed subclasses of chemical peculiarity. Magnetization tends to correlate with the effective temperature only at high MA, for He-weak and He-rich stars.

Keywords: stars: fundamental parameters; stars: magnetic fields

Journal Article.  7749 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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