Abstract
Based on an extended list of lower main sequence stars from Rutten (1987), the relation between chromospheric activity and Rossby number has been revised. The increased statistics changes the shape of the curve as compared with that of Noyes et al. (1984). The saturation at small Rossby numbers has disappeared. The dependence on Rossby number in the range of very large Rossby numbers has weakened. The standard deviation of the activity indices from the mean curve is about 40%. This scatter of individual stars is not due to differences in the spectral type or age of the stars.
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© 1990 International Astronomical Union
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Teplitskaya, R.B., Skochilov, V.G. (1990). Does a Common Dynamo Mechanism Exist for Lower Main Sequence Stars ?. In: Stenflo, J.O. (eds) Solar Photosphere: Structure, Convection, and Magnetic Fields. International Astronomical Union, vol 138. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1061-4_53
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DOI: https://doi.org/10.1007/978-94-009-1061-4_53
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