Magnetic chemically peculiar stars
Markus Sch\"oller, Swetlana Hubrig

TL;DR
This paper reviews magnetic chemically peculiar stars, focusing on their magnetic properties, the oblique rotator model, and the relationship between magnetic fields and rotation, highlighting their role as natural laboratories for atomic and magnetic studies.
Contribution
It provides a comprehensive overview of the properties, models, and specific subclasses of magnetic chemically peculiar stars, emphasizing their significance in astrophysical research.
Findings
Magnetic fields in CP stars vary with rotation.
The oblique rotator model explains magnetic field geometry.
HgMn stars are a notable subclass discussed.
Abstract
Chemically peculiar (CP) stars are main-sequence A and B stars with abnormally strong or weak lines for certain elements. They generally have magnetic fields and all observables tend to vary with the same period. Chemically peculiar stars provide a wealth of information; they are natural atomic and magnetic laboratories. After a brief historical overview, we discuss the general properties of the magnetic fields in CP stars, describe the oblique rotator model, explain the dependence of the magnetic field strength on the rotation, and concentrate at the end on HgMn stars.
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