Issue |
A&A
Volume 407, Number 2, August IV 2003
|
|
---|---|---|
Page(s) | 631 - 642 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20030741 | |
Published online | 17 November 2003 |
Catalogue of averaged stellar effective magnetic fields*
I. Chemically peculiar A and B type stars
1
Special Astrophysical Observatory of the Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia
2
Isaac Newton Institute of Chile, SAO Branch, Nizhnij Arkhyz 369167, Russia
3
Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
Corresponding author: V. D. Bychkov, vbych@sao.ru
Received:
4
November
2002
Accepted:
7
May
2003
This paper presents the catalogue and the method of determination of
averaged quadratic effective magnetic fields for
596 main sequence and giant stars. The catalogue is based on measurements
of the stellar effective (or mean longitudinal) magnetic field strengths Be, which were
compiled from the existing literature.
We analysed the properties of 352 chemically peculiar A and B stars in the catalogue,
including Am, ApSi, He-weak, He-rich, HgMn, ApSrCrEu, and all ApSr type stars.
We have found that the number distribution of all chemically peculiar (CP) stars vs.
averaged magnetic field strength is described by a decreasing exponential
function. Relations of this type hold also for stars of all the analysed
subclasses of chemical peculiarity. The exponential form of the above distribution
function can break down below about 100 G, the latter value representing
approximately the resolution of our analysis for A type stars.
Key words: stars: magnetic fields / stars: fundamental parameters
© ESO, 2003
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