Selecting M-giants with infra-red photometry: Distances, metallicities and the Sagittarius stream

Jing Li, Martin C. Smith, Jing Zhong +9

Using a spectroscopically confirmed sample of M-giants, M-dwarfs and quasars from the LAMOST survey, we assess how well WISE $\&$ 2MASS color-cuts can be used to select M-giant sta…