Magnetic Field Variations with a Rotational Period on Solar-like Star ξ Bootis A

Details Magnetic Field Variations with a Rotational Period on Solar-like Star ξ Bootis A Magnetic Field Variations with a Rotational Period on Solar-like Star ξ Bootis A

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...533.1016p&link_type=abstract

The Astrophysical Journal, Volume 533, Issue 2, pp. 1016-1022.

Astronomy and Astrophysics

Astronomy

12

Stars: Individual (&Xi, Bootis A), Stars: Late-Type, Stars: Magnetic Fields

Scientific paper

We examine the global configuration of the magnetic field of the active dwarf ξ Boo A as a function of stellar rotation phase (P=6.1455+/-0.0003 days), using direct high-precision spectropolarimetric measurements. The magnetic field varies from -10 G up to +30 G. Integrated magnetic flux on the surface changes polarity during a single rotation period on ξ Boo A, resulting in a flux ratio of ΔΦ+/ΔΦ-~1.5. This is the first study of the general magnetic field as a function of rotation on a solar-like star other than the Sun.

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