Magnetic Stars in Clusters of Different Ages. I. The Pleiades Open Cluster and the Pleiades Kinematic Group

The paper presents the results of searching and studying magnetic fields of 4 chemically peculiar stars in the Pleiades open cluster and 21 CP stars in the kinematic group of the same name. Observations were carried out at the 6-m BTA SAO RAS telescope with a circular polarization analyzer. Four sta...

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Bibliographic Details
Published in:Astrophysical bulletin 2023-03, Vol.78 (1), p.36-48
Main Authors: Romanyuk, I. I., Moiseeva, A. V., Yakunin, I. A., Aitov, V. N., Semenko, E. A.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Circular polarization
Clusters
Kinematics
Magnetic stars
Peculiar stars
Physics
Physics and Astronomy
Pleiades cluster
Stellar magnetic fields
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Summary:The paper presents the results of searching and studying magnetic fields of 4 chemically peculiar stars in the Pleiades open cluster and 21 CP stars in the kinematic group of the same name. Observations were carried out at the 6-m BTA SAO RAS telescope with a circular polarization analyzer. Four stars with anomalously strong silicon lines were previously specified in the Pleiades cluster. We did not find a magnetic field in any of them. The Pleiades group contains seven non-magnetic HgMn stars and 14 potentially magnetic Ap/Bp stars of various types. We detected or confirmed magnetic fields in eight objects. The fraction of magnetic CP stars is 57 relative to Ap/Bp. Not a single object was found in the group, in which the longitudinal magnetic field would exceed 2 kG.
ISSN:1990-3413
1990-3421
DOI:10.1134/S1990341323010078