Staff Directory
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Operations - GN Science Ops
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Inger Jorgensen is the Head of Science Operations at Gemini North. She obtained her PhD in astronomy from Copenhagen University, Denmark, in 1993. Following a postdoctoral fellowship and a Hubble Fellowship at University of Texas, Austin, she joined Gemini in 1998. Her main research interests are the formation and evolution of galaxies. She currently leads an international research group carrying out an observational study of the stellar populations of galaxies in rich clusters between z=1 and the present using the Gemini Telescopes and the Hubble Space Telescope. |
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Kristin Chiboucas is a science fellow at Gemini North. She obtained her PhD in 2003 from the University of Michigan. Before rejoining Gemini in 2009, she held postdoc positions at Gemini and the University of Hawaii at Manoa. Her main research interests are on galaxy formation and evolution, investigated through a range of projects including the star formation and assembly histories of cluster galaxies as a function of redshift, the galaxy luminosity function as a function of environment, and the search for extreme dwarf galaxies including very low surface brightness and ultra compact dwarfs. |
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Tom Geballe obtained a PhD in physics in 1974 under Prof. Charles Townes at U.C. Berkeley. Following postdoctoral fellowships at Berkeley and Leiden, and a Carnegie Fellowship at Hale Observatories in Pasadena, he became a staff astronomer at the United Kingdom Infrared Telescope in 1981. He was Astronomer-in-charge, Associate Director, and Head of Operations at UKIRT from 1987 until 1998, when he joined Gemini. Among his research interests are the Galactic center, the late stages of stellar evolution, H3+ as a probe of interstellar gas, the composition of interstellar dust, the surfaces, atmospheres, and aurorae of planets and moons, and brown dwarfs. |
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Sandy Leggett joined Gemini Observatory in Hilo in July 2006, as a tenure-track astronomer. She came from the UK Infrared Telescope, where she was a Support Astronomer for ten years (and Senior Support Astronomer for two). Prior to UKIRT, she was a Support Astronomer at the NASA Infrared Telescope Facility from 1994 to 1996, and a visiting Assistant Professor at UH Hilo from 1993 to 1994. Between 1988 and 1992 she was a Research Associate at the Naval Observatory in Flagstaff Arizona, assisting with their parallax program, and carrying out optical and infrared observational studies of cool white dwarfs and red dwarfs. Her first postdoctoral position took her to Edinburgh University from 1984 to 1988, where her interest in cool dwarfs (white, red and brown), and her frequent use of Mauna Kea telescopes, started. Sandy obtained her BA in Physics in 1980, and her PhD in Astrophysics in 1984, both at the University of Oxford. |
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Marie Lemoine-Busserolle is a Gemini Science Fellow at Gemini North and currently the MICHELLE instrument scientist. She is also part of the GNIRS and NIFS teams. She obtained her PhD in Astrophysics at the University of Toulouse, France, end of 2003, and moved after to a two-years postdoctoral position at the Institute of Astronomy at Cambridge (UK). Marie held a position as an UK Gemini support scientist in the UK NGO office at the university of Oxford for tree year and an half before joining Gemini. Her research interest includes galaxy formation and evolution through the study of physical properties of spatially resolved distant galaxies populations using adaptive optics and integral-field spectroscopy in the optical and infrared. Marie also works on investigating the properties of high-redshift galaxies behind lensing clusters. |
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Rachel Mason is an Assistant Astronomer, Tenure-Track at the Gemini Observatory in Hilo. She took up this position after a postdoctoral fellowship at the NOAO Gemini Science Center (in both Tucson and La Serena), having obtained a PhD in astronomy from the Institute for Astronomy, Edinburgh, in 2003. Her research interests include the central regions of AGN, studied primarily through high angular resolution infrared imaging and spectroscopy, and the chemistry of dust in both our own and other galaxies. |
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Atsuko Nitta is an Assistant Scientist at Gemini Observatory in Hilo. She obtained a PhD in 2000 at University of Texas at Austin. After graduation, she worked for Sloan Digital Sky Survey for 5 years before joining Gemini Observatory. Her research interest includes studies of white dwarf stars to learn about the physics under extreme conditions, place constraints on stellar evolution prior to becoming white dwarf stars, and using them to trace the stellar evolution history. |
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Jay Rhee is an Assistant Scientist at the Gemini Observatory in Hilo, HI. He obtained his Ph.D. degree in Astrophysics & Astronomy from Michigan State University in 2000, after receiving his M.S. and B.S. degrees in Physics from Yonsei University in S. Korea. He held a postdoctoral position at the University of Virginia and then worked for both Yonsei University and the California Institute of Technology as a research professor on NASA's GALEX mission. Before joining Gemini in March 2011, he was a research assistant professor at Purdue University. His research interests focus on the discovery and analysis of field metal-poor stars (the oldest surviving stars), stellar abundance analysis based on high-resolution spectroscopy, Galactic structure (kinetic and chemical sub-structures), and the other old stellar populations in the Milky Way, including globular clusters and dwarf spheroidal galaxies. |
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Kathy Roth is an Associate Scientist based at Gemini North. She obtained her BSc in Physics and Computer Science at Duke University in 1985 and her PhD in Astrophysics from Northwestern University in 1992. She held a postdoctoral position at the Space Telescope Science Institute (STScI) in Baltimore from 1992 until 1995, followed by a Hubble Fellowship at the University of Hawaii Institute for Astronomy from 1995 until 1998. In 1998 she joined the staff of the Far Ultraviolet Spectroscopic Explorer (FUSE) at Johns Hopkins University back in Baltimore, and has been back in Hawaii as part of the Gemini Observatory staff since July 2000. Her research interests include the chemical enrichment of the interstellar medium in our galaxy and in the high redshift universe via quasar absorption line spectroscopy, the study of young high redshift galaxies, and the use of gamma ray bursts to probe chemical enrichment at the highest redshifts of the first stars. |
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Andrew Stephens is an Assistant Scientist and the NIRI Instrument Scientist at Gemini Observatory in Hilo. He obtained his BS in 1996 from the Pennsylvania State University, and his PhD in 2001 from the Ohio State University, both in astronomy. He was awarded the Princeton - Catolica Prize Fellowship in 2001, of which 1 year was spent at Princeton University, and 2 years at the Pontificia Universidad Catolica in Santiago Chile. In 2004 he began work at Gemini. His research interests include galaxy formation and evolution through the study of resolved stellar populations using space-based telescopes and ground-based telescopes with adaptive optics, and stellar chemical abundances and dynamics via optical and infrared spectroscopy. |