ИСТИНА |
Войти в систему Регистрация |
|
ИСТИНА ЦЭМИ РАН |
||
Most of what we know of the universe comes from studying stars. From the birth and evolution of galaxies to the nature of planets, obtaining reliable results needs precise knowledge of the stellar outer parameters, as well as their internal structure and evolution. Until recently, this information only came from the observations and analysis of stellar light, by either spectroscopy or photometry. From these observations, we could derive the atmospheric temperature and pressure, the surface gravity, the magnetic field and the surface abundances of the chemical elements, by using model atmospheres. It was possible to measure the radius of nearby stars by using interferometry and we had access to surface rotation and activity from the study of spectral lines. However, the stellar internal structure could only be derived through evolutionary models. This conference honours the work of Professor Hiromoto Shibahashi, who devoted most of his scientific life to the study of oscillating stars.