| Issue |
A&A
Volume 396, Number 1, December II 2002
|
|
|---|---|---|
| Page(s) | 131 - 141 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20021425 | |
| Published online | 22 November 2002 | |
Magnetic survey of bright northern main sequence stars*
Special Astrophysical Observatory of Russian AS, Nizhnij Arkhyz 369167, Russia
Corresponding author: D. N. Monin, mosha@sao.ru
Received:
26
June
2000
Accepted:
30
August
2002
The first results of a systematic search for magnetic fields in
the brightest upper main sequence (MS) stars are presented. The main
goal is to survey the stars with about the same detection limit
and to improve existing statistics of their magnetism.
The target list contains 57 upper MS stars
and represents well B0.5–F9 stars. High–resolution Zeeman
spectra were obtained for 30 stars of the list.
The accuracy of the magnetic field measurements
ranges from 20 to 300 G depending mainly on spectral class.
In the majority of studied stars we did not detect magnetic fields.
In some stars we suspect the presence of a weak magnetic field.
These are the best candidates for more extensive studies.
A particular case is the star χ Dra where we probably detected
the global magnetic field. The longitudinal field strength
is 
G.
Further observations of this star are needed to confirm the detection
and to ascertain if the magnetic field is variable with the period of
rotation.
Key words: stars: magnetic fields / surveys
© ESO, 2002
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