The Sloan Digital Sky Survey Data Release 7 M Dwarf Spectroscopic Catalog
Abstract
We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release (DR7) of the Sloan Digital Sky Survey (SDSS). For each spectrum, we provide measurements of the spectral type, a number of molecular bandheads, and the H-alpha, H-beta, H-gamma, H-delta and Ca II K emission lines. In addition, we calculate the metallicity-sensitive parameter zeta and 3D space motions for most of the stars in the sample. Our catalog is cross-matched to Two Micron All Sky Survey (2MASS) infrared data, and contains photometric distances for each star. Future studies will use these data to thoroughly examine magnetic activity and kinematics in late-type M dwarfs and examine the chemical and dynamical history of the local Milky Way.
Cite
@article{arxiv.1012.3766,
title = {The Sloan Digital Sky Survey Data Release 7 M Dwarf Spectroscopic Catalog},
author = {Andrew A. West and Dylan P. Morgan and John J. Bochanski and Jan Marie Andersen and Keaton J. Bell and Adam F. Kowalski and James R. A. Davenport and Suzanne L. Hawley and Sarah J. Schmidt and David Bernat and Eric J. Hilton and Philip Muirhead and Kevin R. Covey and Barbara Rojas-Ayala and Everett Schlawin and Mary Gooding and Kyle Schluns and Saurav Dhital and J. Sebastian Pineda and David O. Jones},
journal= {arXiv preprint arXiv:1012.3766},
year = {2010}
}
Comments
4 pages, 1 figure, to appear in online version of the Cool Stars 16 conference proceedings