A Transition of Dynamo Modes in M Dwarfs: Narrowing Down the Spectral Range Where the Transition Occurs Based in part on observations made at l'Observatoire de Haute Provence (CNRS) and at Pic-du-Midi Observatory, France. Also based on data obtained from the SOPHIE archive (OHP) and from the FEROS, HARPS, and UVES archives (European Southern Observatory)
Houdebine et al. combined Ca ii data with projected rotational velocities (v sin i) to construct rotation-activity correlations (RAC) in K-M dwarfs. The RAC slopes were used to argue that a transition between dynamo modes occurs at a spectral type between M2 and M3. H17 suggested that the dynamo tra...
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| Veröffentlicht in: | The Astrophysical journal 2020-03, Vol.891 (2) |
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| Format: | Artikel |
| Sprache: | eng |
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