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Coronal and chromospheric activity of Teegarden's star Open

B. Fuhrmeister, J. H. M. M. Schmitt, A. Reienrs, S. Czesla, V. J. S. Béjar , et al. · 2025

Teegarden's star is a late-type M-dwarf planet host, typically showing only rather low levels of activity. In this paper we present an extensive characterisation of this activity at photospheric, chromospheric, and coronal levels. We speci…