| Schaefer, Gail Helen | Dynamical masses of pre-main sequence stars | 2004 | State University of New York at Stony Brook | NIRI+ALTAIR | USA |
| Beifiori, Alessandra | Dynamics induced by the central supermassive black holes in galaxies | 2010 | University of Padova (Italy) | NIRI+ALTAIR | Other |
| Hernández-Jiménez, José Andrés | Efeitos da Interação na Cinemática, Morfologia e Dinâmica das Galáxias em Fusão Menor AM1219 430, AM2058 381 e AM1228 260 | 2015 | Federal University of Rio Grande do Sul | GMOS-S | Brazil |
| Foltz, Ryan Michael | Environmental Quenching in Clusters at High Redshift | 2017 | University of California Riverside | GMOS-N/GMOS-S | USA |
| Menezes, Roberto Bertoldo | Espectroscopia 3D de núcleos ativos de galáxias tratamento e análise de dados no óptico e no infravermelho próximo | 2012 | University of Sao Paulo | GMOS-N/GMOS-S/NIFS+ALTAIR | Brazil |
| Granada, Anahi | Espectroscopia IR de estrellas B con lineas en emision | 2010 | Universidad Nacional de La Plata (UNLP) | NIRI/GNIRS | Argentina |
| Collado, Ana | Estrellas Wolf-Rayet de tipo WN en la Via Lactea | 2013 | Universidad Nacional de San Juan | GMOS-S | Argentina |
| Faifer, Favio | Estudio comparativo de sistemas de cumulos globulares extragalacticos | 2006 | Universidad Nacional de La Plata (UNLP) | GMOS-N/GMOS-S | Argentina |
| Caso, Juan Pablo | Estudio de enanas ultra-compactas y cumulos globulares en el cumulo de Antlia | 2015 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Calderon, Juan Pablo | Estudio de propiedades fotometricas de galaxias en el cumulo de Antlia | 2015 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Jasmim, Flávia Luzia | Estudo da composição superficial de diversas classes de pequenos corpos | 2013 | Observatorio Nacional | TRECS | Brazil |
| Gusmão, Danilo Maciel Lopes | Estudo multi técnicas das regiões HII ultracompactas por espectroscopia de alta resolução espacial | 2015 | Universidade do Vale do Paraiba | | Brazil |
| Jiang, Linhua | Evolution of the quasar population at high redshift | 2008 | The University of Arizona | GNIRS/NIRI | USA |
| Rajan, Abhijith | Exoplanet Meteorology: Characterizing The Atmospheres Of Directly Imaged Sub-Stellar Objects | 2017 | Arizona State University | GPI | USA |
| Mehner, Andrea | Exploring and Modeling High-excitation Emission in the Ejecta and the Wind of Eta Carinae | 2011 | University of Minnesota | GMOS-S | USA |
| Nysewander, Melissa C. | Exploring optically dark and dim gamma-ray bursts: instrumentation, observation and analysis | 2006 | The University of North Carolina at Chapel Hill | GMOS-S | USA |
| Esposito, Thomas Matthew | Exploring planetary system evolution through high-contrast imaging | 2015 | University of California Los Angeles | GPI | USA |
| Mooley, Kunal P. | Exploring the dynamic radio sky: the search for slow transients with the VLA | 2015 | California Institute of Technology | GMOS-N | USA |
| Tang, Sumin | Exploring the Long-Term and Extreme Variability of Stars | 2012 | Harvard University | GMOS-N | USA |
| Fu, Hai | Extended emission-line regions: Remnants of quasar superwinds? | 2008 | University of Hawaii | GMOS-N | USA |
