Presentation 1 : Oral
Physico-chemistry of interstellar matter
E. Dartois
Numerous instruments, actual or in development (VLT, SIRTF,
Herschel, ALMA, NGST, ROSETTA), will allow a real insight in the
spectroscopic observation of interstellar matter. To understand the
implications of chemistry on the dust evolution from cloud initial
condensation phases to planetary systems, it is necessary to measure
its chemical composition using these facilities.
I will show in this talk the success of the interpretation of
interstellar spectra based on laboratory experiments on grain ice
mantles analogs. I will detail the effects of interacting molecules in
the solid state on the observed line profiles, allowing to understand
their structure. I will also discuss the possibility to follow in the
laboratory the organic matter evolution from the elementary molecules
found in protostellar environments to the more complex molecules
incorporated in protoplanetary systems.