Optical spectra of nearby M dwarfs

Optical spectra obtained with the FAST instrument at Fred Lawrence Whipple Observatory, obtained as part of the MEarth Project. Spectra are of nearby M dwarfs. Files are named by 2MASS ID (minus the 2MASS part), with the file format of: twomassid.program.year.date.ms.fits where program indicates which of the two FAST programs (204 and 222) the spectra derive from, and the year and date (month+day) indicate the date of the observations. Data from Program 204 were first published in West et al. (2015), and were re-analyzed in Newton et al. (2017). Data from Program 222 were first published in Newton et al. (2017).