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| Paper: |
Rotation of evolved stars |
| Volume: |
9, Cool Stars, Stellar Systems, and the Sun: Sixth Cambridge Workshop |
| Page: |
404 |
| Authors: |
de Medeiros, J. R.; Mayor, M. |
| Abstract: |
Rotation measurements have been made for more than 1900 evolved stars of luminosity classes IV, III, II and Ib in the spectral range F-G-K. The survey was carried out with the CORAVEL spectrometer. The behavior of the distribution of projected equatorial rotational velocities in these spectral regions is studied as a function of luminosity and colors. A well-defined 'rotational dividing line' is established. The rotational discontinuity appears at F81V, GOIII, F9II and near F9Ib. A strong modification of the previous explanations for the rotational behavior of evolved stars emerges from the data. |
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