Stellar parameters for ~650000 stars with APOGEE

This is the first pipeline adapted for these data that is capable of estimating these parameters in a self-consistent manner not only for low-mass stars, (such as main-sequence dwarfs, pre-main-sequence stars, and red giants), but also high-mass stars with Teff in excess of 50000K, including hot dwarfs and blue supergiants.

The catalog of ~650000 stars presented in this paper allows for a detailed investigation of the star-forming history of not just the Milky Way, but also of the Magellanic clouds, as different type of objects tracing different parts of these galaxies can be more cleanly selected through their distinct placement in Teff-logg parameter space than in previous APOGEE catalogs produced through different pipelines.