Thomas P. O'Brien

TL;DR: DESI as discussed by the authors is a ground-based dark energy experiment that will study baryon acoustic oscillations (BAO) and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey.

TL;DR: The Kilodegree Extremely Little Telescope (KELT) project as mentioned in this paper is a survey for planetary transits of bright stars, which consists of a small-aperture, wide-field automated telescope located at Winer Observatory near Sonoita, Arizona.

TL;DR: SDSS-V as discussed by the authors is an all-sky, multi-epoch spectroscopic survey of over six million objects designed to decode the history of the Milky Way, trace the emergence of the chemical elements, reveal the inner workings of stars, and investigate the origin of planets.

TL;DR: The Apache Point Observatory Galactic Evolution Experiment (APOGEE) as mentioned in this paper uses a dedicated 300-fiber, narrow-band (1.5-1.7 micron) near-infrared spectrograph to survey approximately 100,000 giant stars across the Milky Way.

TL;DR: The Apache Point Observatory Galactic Evolution Experiment (APOGEE) as mentioned in this paper is a survey of ~ 10^5 red giant stars that systematically sampled all Milky Way populations (bulge, disk, and halo) to study the Galaxy's chemical and kinematical history.