The SLUGGS (SAGES Legacy Unifying Globulars and GalaxieS) survey is an astronomical survey of 25  nearby early-type (E and S0) galaxies. This survey uses a combination of imaging from Subaru/Suprime-Cam and spectroscopy from Keck/DEIMOS to investigate the chemo-dynamical properties of both the diffuse starlight and the globular cluster systems of the target galaxies. Pilot data for the survey was obtained in 2006 and data acquisition was completed in 2017. SAGES SAGES (Study of the Astrophysics of Globular Clusters in Extragalactic Systems) is an international network of researchers investigating the formation and evolution of globular clusters and their host galaxies, using observational facilities around the world  . It was founded by British astrophysicist and University of California, Santa Cruz professor and astronomer Jean P. Brodie. Method Deep wide-field imaging from Subaru/Suprime-Cam is used to identify and measure the positions of candidate globular clusters around each survey galaxy. Several (up to 4 ) DEIMOS masks are then created which include slits corresponding to the locations of globular clusters, galaxy starlight and random background sky locations in the outer parts of the mask. The DEIMOS spectrograph  is centred on wavelengths around the Calcium Triplet lines (~850 nm). After a typical 2 hour exposure per mask, spectra of globular clusters and galaxy starlight is obtained. Using a technique called SKiMS (Stellar Kinematics from Multiple Slits) it is possible to extract the kinematics (and metallicity) of galaxy starlight out to 3 effective radii. Equivalent data for the globular clusters is obtained out to ~10 effective radii. The DEIMOS instrument has the advantages of being a stable, high throughput, wide-field spectrograph coupled with excellent velocity resolution (~12 km/s) on a 10m telescope. This technique effectively uses DEIMOS as a pseudo wide area integral field unit. Further reading "The SAGES Legacy Unifying Globulars and GalaxieS Survey (SLUGGS): Sample Definition, Methods, and Initial Results"; J. P. Brodie et al., 2014, ApJ, 796, 52 link; "The SLUGGS Survey: Wide-field Stellar Kinematics of Early-type Galaxies"; J. Arnold et al., 2014, ApJ, 791, 80 link; "The SLUGGS Survey: exploring the metallicity gradients of nearby early-type galaxies to large radii"; N. Pastorello et al., 2014, MNRAS, 442, 1003 link; "The SLUGGS Survey: kinematics for over 2500 globular clusters in 12 early-type galaxies"; V. Pota et al., 2013, MNRAS, 428, 389 link; "The SLUGGS Survey: calcium triplet-based spectroscopic metallicities for over 900 globular clusters"; C. Usher et al., 2012, MNRAS, 426, 1475 link; "The SLUGGS survey: inferring the formation epochs of metal-poor and metal-rich globular clusters"; D. A. Forbes et al., 2015, MNRAS, 452, 1045  link;
The SLUGGS (SAGES Legacy Unifying Globulars and GalaxieS) survey is an astronomical survey of 25 (and 3 `bonus') nearby early-type (E and S0) galaxies. This survey uses a combination of imaging from Subaru/Suprime-Cam and spectroscopy from Keck/DEIMOS to investigate the chemo-dynamical properties of both the diffuse starlight and the globular cluster systems of the target galaxies. Pilot data for the survey was obtained in 2006 and data acquisition was completed in 2017. SAGES SAGES (Study of the Astrophysics of Globular Clusters in Extragalactic Systems) is an international network of researchers investigating the formation and evolution of globular clusters and their host galaxies, using observational facilities around the world , particularly the Keck and Subaru telescopes . It was founded by Jean Brodie, Duncan Forbes, Aaron Romanowsky and Jay Strader. Method Deep wide-field imaging from Subaru/Suprime-Cam is used to identify and measure the positions of candidate globular clusters around each survey galaxy. Several (up to 6 ) DEIMOS masks are then created which include slits corresponding to the locations of globular clusters, galaxy starlight and random background sky locations in the outer parts of the mask. The DEIMOS spectrograph , on the Keck telescope, is centred on wavelengths around the Calcium Triplet lines (~850 nm). After a typical 2 hour exposure per mask, spectra of globular clusters and galaxy starlight is obtained. Using a technique called SKiMS (Stellar Kinematics from Multiple Slits) it is possible to extract the kinematics (and metallicity) of galaxy starlight out to 3 effective radii. Equivalent data for the globular clusters is obtained out to ~10 effective radii. The DEIMOS instrument has the advantages of being a stable, high throughput, wide-field spectrograph coupled with excellent velocity resolution (~12 km/s) on a 10m telescope. This technique effectively uses DEIMOS as a pseudo wide area integral field unit. Further reading "The SAGES Legacy Unifying Globulars and GalaxieS Survey (SLUGGS): Sample Definition, Methods, and Initial Results"; J. P. Brodie et al., 2014, ApJ, 796, 52 link; "The SLUGGS Survey: Wide-field Stellar Kinematics of Early-type Galaxies"; J. Arnold et al., 2014, ApJ, 791, 80 link; "The SLUGGS Survey: exploring the metallicity gradients of nearby early-type galaxies to large radii"; N. Pastorello et al., 2014, MNRAS, 442, 1003 link; "The SLUGGS Survey: kinematics for over 2500 globular clusters in 12 early-type galaxies"; V. Pota et al., 2013, MNRAS, 428, 389 link; "The SLUGGS Survey: calcium triplet-based spectroscopic metallicities for over 900 globular clusters"; C. Usher et al., 2012, MNRAS, 426, 1475 link; "The SLUGGS survey: inferring the formation epochs of metal-poor and metal-rich globular clusters"; D. A. Forbes et al., 2015, MNRAS, 452, 1045 link; "The SLUGGS Survey: A Catalog of Over 4000 Globular Cluster Radial Velocities in 27 Nearby Early-type Galaxies"; D. A. Forbes et al., 2017, MNRAS, 153, 114 link;
A
(and 3 `bonus')
A
, particularly the Keck and Subaru telescopes
R
British astrophysicist and University of California, Santa Cruz professor and astronomer Jean P. Brodie.
Jean Brodie, Duncan Forbes, Aaron Romanowsky and Jay Strader.
R
4
6
A
, on the Keck telescope,
A
link; "The SLUGGS Survey: A Catalog of Over 4000 Globular Cluster Radial Velocities in 27 Nearby Early-type Galaxies"; D. A. Forbes et al., 2017, MNRAS, 153, 114