GCs in 27 nearby ETGs from the SLUGGS survey

The SLUGGS survey is designed to be representative of elliptical and lenticular galaxies in the stellar mass range 10<logM_*_/M_{sun}_<11.7. The data have been obtained over many years, mostly using the very stable multi-object spectrograph DEIMOS on the Keck II 10 m telescope.

Radial velocities are measured using the calcium triplet lines, with a velocity accuracy of +/-10-15 km/s. We use phase space diagrams (i.e., velocity-position diagrams) to identify contaminants such as foreground stars and background galaxies, and to show that the contribution of GCs from neighboring galaxies is generally insignificant. Likely ultra-compact dwarfs are tabulated separately.