A Ca ii H&K survey of γ Doradus candidates |
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| Authors: | Anthony B Kaye & Klaus G Strassmeier |
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| Institution: | Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303, USA,;Institut für Astronomie, Universität Wien, Türkenschanzstraße 17, A-1180 Wien, Austria |
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| Abstract: | In an investigation of the starspot hypothesis as it applies to the 'slowly variable' F-type dwarfs, we spectroscopically observed eight promising γ Doradus candidates to search for Ca ii H&K emission. We found that there are no significant emission reversals in the cores of these resonance lines. Based on the ceiling flux calculations of the Ca ii K line and on calculations of the Rossby number, we conclude that there is no support for the presence of strong magnetic activity and the starspot hypothesis in these objects. |
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| Keywords: | stars: activity stars: chromospheres stars: oscillations stars: variables: other |
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