Rotation and Activity in Mid‐M to L Field Dwarfs
Rotation and Activity in Mid‐M to L Field Dwarfs
We analyze rotation velocities and chromospheric (H-alpha) activity, derived from multi-year, high-resolution spectra, in 56 mid-M to L dwarfs. Rotational velocities are found to increase from mid-M to L. This is consistent with a lengthening of spin-down timescale with later type, though in the L types the trend may also …