Stellar Spectroscopy and Populations
Spectroscopy is a branch of science concerned with the study of spectra produced when matter interacts with or emits electromagnetic radiation field. On Earth, spectroscopy has a wide variety of applications: from medicine to geophysics.
Our Research Group applies the methods of spectroscopy to study stars — the fundamental units of the Universe.
We observe the Sun and other stars on very large telescopes and use the measured spectra to study the structure and properties of stellar "atmospheres", the low-density outer gaseous shells which display a variety of physical phenomena, just like the terrestrial atmosphere. From spectra, we can also read off abundances of chemical elements, the data that ultimately tell us about formation and evolution of stars, nucleosynthesis of elements in nature, formation of planetary systems, history and evolution of stellar populations and galaxies.