interstellar medium (ISM) plays an important role in the evolution of
galaxies. Stars are formed by material from the ISM and at the end of
their evolution they return material back to the ISM – enriched with
nucleosynthetic products – either in winds or in supernova explosions.
The radiation produced by hot stars can heat and ionize atoms and
photodissociate molecules in the ISM producing HII regions – where
hydrogen is completely ionised – and photodissociation regions (PDRs) –
where photons with E < 13.6 eV dominate the physics and chemistry of
the region. This energetic interaction between stars and their
environment drives the evolution of galaxies. The evolution and the
characteristics of the ISM of galaxies can be studied by analyzing
observations of the interaction regions: HII regions, PDRs and shocks.
school will provide training on theory and techniques used to interpret
observations of HII regions, PDRs and shocks in the ISM. World's
leading experts will give lectures on the physical and chemical
processes relevant to these conditions and the characteristics of their
emission spectra. Additional classes will focus on the role of these
regions in the evolution of the interstellar medium of galaxies. The
lectures will be complemented by hands-on activities in which the
students will analyze and interpret actual space (spectroscopic) data
from the Spitzer and Herschel archives using numerical analysis tools.
Scientific Organising Committee:
Jacques Le Bourlot
(Observatoire de Paris and Université Paris-Diderot)