Mean magnetic field as a tracer of differential rotation in late-type dwarfs

Details Mean magnetic field as a tracer of differential rotation in late-type dwarfs Mean magnetic field as a tracer of differential rotation in late-type dwarfs

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..368b&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, April 1991, p. 368-377.

Astronomy and Astrophysics

Astronomy

3

Dwarf Stars, Stellar Magnetic Fields, Stellar Rotation, Solar Magnetic Field, Solar Rotation, Stellar Activity

Scientific paper

Subsets of the solar mean-magnetic-field measurements have been studied to determine the conditions for which a solar-type differential rotation signal may be seen in stellar observations. Stellar differential rotation may be detected from mean-magnetic-field measurements if: (1) the number of observations is relatively high; (2) the noise level is less than roughly 25 percent of the maximum field strength value; and (3) the sign of the magnetic field has been determined. The combination of synoptic polarization measurements with those of Zeeman broadening may permit the detection of stellar differential rotation.

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