A new scenario for the rotational evolution of solar- and late-type stars

Details A new scenario for the rotational evolution of solar- and late-type stars A new scenario for the rotational evolution of solar- and late-type stars

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20515002b&link_type=abstract

American Astronomical Society Meeting 205, #150.02; Bulletin of the American Astronomical Society, Vol. 36, p.1598

Astronomy and Astrophysics

Astronomy

Scientific paper

We have identified age- and mass-dependent patterns in the rotation periods of solar- and late-type stars in clusters and in the field.
These patterns are distinct enough to allow age determination, even of single field stars, via ``gyrochronology."
The underlying dependences suggest a scenario for the rotational evolution of stars that is primarily magnetic, suggesting a preferred origin for the fields, and involving an early transition from a distributed dynamo to one of the interface variety.
(We gratefully acknowledge funding from NSF and telescope time from SMARTS.)

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