Measurements of the General Magnetic Fields of Active Late-Type Stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Measurements of the general magnetic fields of active, late-type stars obtained with the 2.6-m Sha n telescope of the Crimean Astrophysical Observatory are reported. Statistically significant values of the magnetic fields of ∈ Eri and 61 Cyg A have been detected. The magnetic fields range from -10 to 21 G. The magnetic-field values for ∈ Eri and 61 Cyg A exceed the solar field by an order of magnitude; ∈ Eri is more active than the Sun, while 61 Cyg A has approximately the same activity level as the Sun. There is some evidence for variations in the general magnetic fields of these stars associated with their axial rotation.

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