Published July 28, 2016
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Hunting for strong magnetic fields in rapidly rotating sun-like stars with Stokes-I observations
Authors/Creators
- 1. Goettingen University
- 2. CFHT, Hawaii
- 3. Uppsala University
Description
Stars with convective envelopes can generate strong magnetic fields
through rotationally driven dynamos. Theory suggests that the maximum
magnetic field strength depends on the energy budget stored in
the stellar convective shell and can reach values of several kilogauss
in fastest rotating stars. We test this predictions by measuring
total magnetic flux and polarization in a sample of sun-like stars
that rotate close to the activity saturation limit.
We detect average magnetic flux densities of several hundred G in several of our targets, with the strongest field of about 1~kG in a K type star V383~Lac showing that young sun-like stars can produce average fields on the kG level.
Notes
poster #142
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References
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