An Equatorially Symmetric Rotator Model for Magnetic Stars. Ii. Inhomogeneous Element Distribution
Abstract
Magnetic star models with inhomogeneous distribution of the elements on the stellar surface are studied in order to calculate the mean longitudinal component of the magnetic field. The geometry of the magnetic field consists of the superposition of a dipole and an axisymmetric quadrupole, both lying in the equatorial plane with their axes parallel to one another. An axis of symmetry thus exists, and lines of constant magnetic field strength or constant field gradient are concentric circles about this axis. As a result, the models are characterized by element concentrations in spots at the poles and in rings surrounding the poles. Results of computations show that the amount of compensation of both polarities after integrating over the visible hemisphere can be significantly reduced to yield values of the mean longitudinal magnetic field component not too different from the values of the polar field strength, as in homogeneous models.
 Publication:

Astronomische Nachrichten
 Pub Date:
 1979
 DOI:
 10.1002/asna.19793000102
 Bibcode:
 1979AN....300....1O
 Keywords:

 Astrophysics;
 Magnetic Stars;
 Stellar Magnetic Fields;
 Stellar Models;
 Stellar Rotation;
 Chemical Composition;
 Inhomogeneity;
 Magnetic Dipoles;
 Magnetic Field Configurations;
 Quadrupoles;
 Spatial Distribution;
 Surface Properties;
 Astrophysics