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| Faculty Members |
My research interests lie in the study of abundances of stellar populations, in order to (1) help constrain stellar evolutionary models, particularly the extent of various nucleosynthesis reactions, and gain a better understanding of stellar evolution covering a range of stellar masses, (2) study the effects of metallicity on stellar evolution, and (3) study the effect that the products of nucleosynthesis which are deposited into the interstellar medium (ISM) by stellar winds and by ejections have on the chemical evolution of galaxies. I am particularly interested in the study of planetary nebulae because their abundances reflect both the state of the ISM out of which the progenitor stars formed, and the nucleosynthesis and mixing processes that occurred in the progenitor star. I am also interested in the study of hot stars, particularly the Wolf-Rayet stars, because their winds directly reveal the products of nucleosynthesis which occurred in the progenitor star, and provide a strong constraint for nucleosynthetic processing in massive stars. I am interested in both galactic and extragalactic objects, to study stellar evolution covering a wide range of metallicity. In order to obtain the most accurate abundances, I tend to adopt a multi-wavelength approach in my work, covering the UV, optical and near-IR, in order to obtain direct information on various stages of ionization.
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last modified: March 22, 2007 |
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