The SAGES Legacy Unifying Globulars and GalaxieS (SLUGGS) Survey is a wide-field chemo-dynamical survey of early-type galaxies.  It capitalizes on the unmatched observing power of the Subaru/Suprime-Cam imager and the Keck/DEIMOS spectrograph, combined with state-of-the-art simulations to interpret the observations in a cosmological context.

Spectroscopy of the near-infrared calcium triplet provides kinematic and metallicity information for stars (to ~3 effective radii) and globular clusters (to ~10 effective radii) in two dimensions around the survey galaxies.  The science goals are to map out halo substructure, mass, angular momentum, metallicity gradients, orbital structure, and the distribution of dark matter. These fundamental characteristics provide important clues about the assembly histories of galaxies.

The survey, completed in 2017, is a key project of the Study of the Astrophysics of Globular Clusters in Extragalactic Systems (SAGES) network and is supported by the ARC and NSF. It has produced over a dozen PhD theses.