Spectropolarimetric Constraints on the Maunder Minimum Analog HD 166620: Evidence for Weakened Magnetic Braking

We present the first spectropolarimetric time-series analysis of the Maunder Minimum analog HD 166620, using 12 nights of data from CFHT/SPIRou and a single epoch from CFHT/ESPaDOnS. While individual Stokes V profiles exhibit no significant polarization signatures, we leverage the rotational coverag...

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Autors principals:	Federica Chiti, Jennifer L. van Saders, Oleg Kochukhov, Travis S. Metcalfe
Format:	Artigo
Idioma:	Inglês
Publicat:	IOP Publishing 2026-01-01
Col·lecció:	The Astrophysical Journal
Matèries:	Stellar evolution Stellar rotation Stellar magnetic fields Spectropolarimetry Maunder minimum
Accés en línia:	https://doi.org/10.3847/1538-4357/ae4d3b
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