| Bosman, Sarah Elena Ivana | Quasars at the high redshift frontier | 2017 | University of Cambridge | GMOS-S | UK |
| Bate, Nicholas Frazer | Quasar microimaging | 2010 | University of Melbourne | GMOS-S | Australia |
| Abbott, Jay Brian | Quantitative spectroscopic studies of Wolf-Rayet stars in local group galaxies | 2004 | University of London, University College London | GMOS-N | UK |
| Walker, Emma Suzanne | Quantatitive analysis of type Ia supernova spectra and implications for cosmology | 2009 | University of Oxford | GMOS-N | UK |
| Marble, Andrew Robert | QSO pairs and the Lyman-alpha forest: observations, simulations, and cosmological implications | 2007 | The University of Arizona | GMOS-S | USA |
| Sales, Dinalva Aires de | Propriedades físicas dos silicatos e hidrocarbonetos aromáticos policíclicos presentes na região nuclear das galáxias Seyferts e Starburst | 2012 | Federal University of Rio Grande do Sul | MICHELLE/TRECS | Brazil |
| Rembold, Sandro Barboza | Propriedades dinâmicas e populacionais do aglomerado de galáxias LCDCS S001 | 2007 | Federal University of Rio Grande do Sul | GMOS-S | Brazil |
| May, Daniel | Propriedades de núcleos ativos de galáxias observadas no infravermelho próximo com óptica adaptativa | 2016 | University of Sao Paulo | NIFS+LGS/GMOS-N | Brazil |
| Oio, Gabriel
| Propiedades espectroscopicas de galaxias Narrow Line Seyfert 1 | 2018 | Universidad Nacional de Cordoba | GMOS-N | Argentina |
| Davis, Saul | Progress in globular cluster research: insights from NGC 6397 and Messier 4 | 2008 | University of British Columbia | GMOS-S | Canada |
| Finn, Charles William | Probing the connection between the intergalactic medium and galaxies with quasar absorption-line spectroscopy | 2015 | Durham University | GMOS-S | UK |
| Knutson, Heather | Portraits of distant worlds: characterizing the atmospheres of extrasolar planets | 2009 | Harvard University | NIRI | USA |
| Sanmartim, David | População estelar e cinemática de quasares post | 2013 | Federal University of Rio Grande do Sul | GMOS-N/GMOS-S | Brazil |
| Bott, Kimberly M. | Polarimetry of hot-Jupiter systems and radiative transfer models of planetary atmospheres | 2017 | University of New South Wales | GNIRS | Australia |
| Smith Castelli, Analia | Poblaciones de galaxias en el cumulo de Antlia | 2008 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Millar-Blanchaer, Maxwell A. | Planetary systems in polarized light: Debris disk observations and instrumentation | 2016 | University of Toronto | GPI | Canada |
| Barber, Sara D. | Planetary remnants around white dwarf stars | 2015 | University of Oklahoma | NIRI | USA |
| Liskowsky, Joseph Paul | Planet formation in transition disks: modeling, spectroscopy, and theory | 2012 | Clemson University | PHOENIX | USA |
| Helton, Lorren Andrew | Photometric and spectroscopic analysis of classical novae: an examination of their observational characteristics and greater astronomical impact | 2010 | University of Minnesota | GNIRS | USA |
| Doering, Ryan Lee | Parameterizing the dust around Herbig Ae/Be stars: Multiwavelength imaging, radiative transfer modeling, and near-infrared instrumentation | 2008 | University of Illinois at Urbana-Champaign | TRECS | USA |
