Gradient of the stellar magnetic field in measurements of hydrogen line cores

Details Gradient of the stellar magnetic field in measurements of hydrogen line cores Gradient of the stellar magnetic field in measurements of hydrogen line cores

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iaus..259..411k&link_type=abstract

Cosmic Magnetic Fields: From Planets, to Stars and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium,

Astronomy and Astrophysics

Astronomy

5

Stars: Magnetic Field, Stars: Chemically Peculiar, Stars: 53 Cam

Scientific paper

We report the observed systematic differences in longitudinal magnetic field values, obtained from measurements of metal lines and the core of the Hβ line for a number of Ap stars, having strong global magnetic fields. In overwhelming majority of cases the magnetic field values, obtained from measurements of hydrogen lines cores, is smaller then the ones obtained from metal lines. We discuss some possible explanations of this effect, the most probable of which is the existence of the gradient of the magnetic field in stellar atmospheres.

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