Model of the Magnetic Field of HD 187474 |
| |
| Authors: | Yu V Glagolevskij |
| |
| Institution: | (1) Special Astrophysical Observatory, Russian Academy of Sciences, Russia |
| |
| Abstract: | A model is constructed for the magnetic field of the star HD 187474, which has a very long axial rotation period P = 2345d. It turns out that the structure of the magnetic field is best described by a model of a displaced (Δα = 0.1) dipole inclined
to the axis of rotation by an angle β = 24°. The star is inclined to the line of sight by an angle i = 86°. Because of the
displaced dipole the magnitude of the magnetic field differs at the poles: Bp = +6300 and 11600 G. A Mercator map of the distribution
of the magnetic field over the surface is obtained. The 7 slowly rotating CP stars studied thus far have an average angle
β = 62°, which equals the average value for a random orientation of dipoles.
__________
Translated from Astrofizika, Vol. 48, No. 4, pp. 575–583 (November 2005). |
| |
| Keywords: | stars: magnetic fields individual: HD 187474 |
| 本文献已被 SpringerLink 等数据库收录！ |
|
