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Professor Buta’s research concerns the morphology and dynamics of barred and oval disk galaxies. He is particularly interested in the evolution of such galaxies and the role the bar plays in generating structure. His research has focused most intensively on those barred galaxies that show ring features in the morphology, since these rings can be linked to specific orbital resonances in the disk plane. Through their locations and kinematics, rings provide information on the bar pattern speed, one of the fundamental unknowns of galactic dynamics. For the most part, Professor Buta’s approach has been observational, and he has used data obtained in ultraviolet, optical, near-infrared, and 21-cm radio wave bands for studying galaxies. He has also conducted numerical simulations of several well-observed nearby barred galaxies, using near-infrared images to define the gravitational potential. Most recently, Professor Buta obtained optical and ultraviolet imaging of starburst nuclear rings in two barred galaxies with the Hubble Space Telescope. These studies provide important information on dust, star formation, and structure in the vicinity of the likely inner Lindblad resonance in these galaxies.
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MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYno. 2 (2019): 2175-2189
Monthly Notices of the Royal Astronomical Societyno. 1 (2019): 590-608
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYno. 1 (2019): 832-844
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