Further Analysis of Stellar Magnetic Cycle Periods
Astrophysics
2007-05-23 v1
Abstract
We further investigate relationships between activity cycle periods in cool stars and rotation to include new cycle data, and explore different parameterizations of the problem. We find that relations between cycle and rotational frequencies (omega_cyc vs. Omega) and between their ratio and the inverse Rossby number (omega_cyc/Omega vs. Ro^{-1}) show many similarities, including three branches and similar rms scatter. We briefly discuss some implications for dynamo models.
Cite
@article{arxiv.astro-ph/0105070,
title = {Further Analysis of Stellar Magnetic Cycle Periods},
author = {S. H. Saar and A. Brandenburg},
journal= {arXiv preprint arXiv:astro-ph/0105070},
year = {2007}
}
Comments
4 pages, 6 figures. To appear in "Magnetic Fields across the Hertzsprung-Russell Diagram" G. Mathys, S.K. Solanki, & D.T. Wickramasinghe (eds.)