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Flares Detected on Some Late Giants: Are They Real?
Published online by Cambridge University Press: 12 April 2016
Extract
Recently, some apparently single red giants with evidence of chromospheric activity were reported. In this work we observed those single late giants with reported flares, referenced by Pettersen (1989) and Schaefer (1989), as part of a program for investigation of the chromospheric activity in G and K giants.
According to Simon & Drake (1989), active single G and K giants may be first crossing stars that have just entered the phase of rapid spin-up as their convection zones advance upon their more rapidly rotation radiative cores. These stars are situated on the base of the red giant branch on the HR diagram. As a result they may possess dynamo driven activity at this stage of evolution.
- Type
- Flares in Late-type Stars: Radio and Optical
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- Copyright © Springer-Verlag 1995