Spectroscopic and photometric analysis of 21 chromospherically active variables: Activity cycles and differential rotation
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DOI: 10.1017/pasa.2021.21
Abstract: Abstract We investigate magnetic activity properties of 21 stars via medium resolution optical spectra and long-term photometry. Applying synthetic spectrum fitting method, we find that all targets are cool giant or sub-giant stars possessing overall… read more here.
Keywords: cycle; rotation; relative surface; rotation period ... See more keywords