Low-mass stars in their core-helium-burning stage define the sharpest feature present in the
color-magnitude diagrams of nearby galaxy systems: the red clump (RC). This feature has …

This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky
Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the …

The spectral analysis and data products in Data Release 16 (DR16; 2019 December) from
the high-resolution near-infrared Apache Point Observatory Galactic Evolution Experiment …

The Sloan Digital Sky Surveys (SDSS) have been almost continuously observing the skies
for over 20 yr, since the project began with a first phase in 1998 (SDSS-I; York et al. 2000) …

This is the first of a series of papers presenting the Modules for Experiments in Stellar
Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive …

A precise interstellar dust extinction law is critically important to interpret observations. There
are two indicators of extinction: the color excess ratio (CER) and the relative extinction …

Abstract The SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE)
survey has obtained high-resolution spectra for thousands of red giant stars distributed …

Abstract We describe the Milky Way Survey (MWS) that will be undertaken with the Dark
Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak …

Black hole binary systems with companion stars are typically found via their x-ray emission,
generated by interaction and accretion. Noninteracting binaries are expected to be plentiful …

Galactic haloes in a Λ-CDM universe are predicted to host today a swarm of debris resulting
from cannibalized dwarf galaxies. The chemodynamical information recorded in their stellar …