Cool Stars 14 - Submitted Abstract # 56
This version created on 05 October 2006

Slow rotation - high activity:  The mystery of HR1362


Thomas Dall, Gemini Observatory
Klaus Strassmeier, Astrophysical Institute Potsdam

HR 1362 is an active star that holds one big mystery:  how can a
single, late-type convective star with rotation and activity periods
of more than 300  days maintain a strong magnetic field?  We are
investigating three possible explanations:  (1) Fossil magnetic field
left over from an earlier Ap evolutionary stage giving rise to
semi-stable spot configurations, (2) Pole-on very fast rotator, where
the periodicity reflects activity cycles rather than rotation, or (3)
an unseen magnetized companion inducing activity on the parent star.
We present preliminary results from an ongoing spectroscopic
monitoring campaign with 1 m/s radial velocity precision data using
the HARPS spectrograph.

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