The First Spin-Orbit Obliquity of an M dwarf/brown dwarf System: An
eccentric and aligned TOI-2119 b
The First Spin-Orbit Obliquity of an M dwarf/brown dwarf System: An
eccentric and aligned TOI-2119 b
We report the first instance of an M dwarf/brown dwarf obliquity measurement for the TOI-2119 system using the Rossiter-McLaughlin effect. TOI-2119 b is a transiting brown dwarf orbiting a young, active early M dwarf ($T_{\rm{eff}}$ = 3553 K). It has a mass of 64.4 M$_{\rm{J}}$ and radius of 1.08 R$_{\rm{J}}$, …