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SUMMARY:A brief introduction to Astrochemistry - Dr Valentine Wakelam\, La
 boratoire d'Astrophysique de Bordeaux\, Bordeaux\, France.
DTSTART:20081027T141500Z
DTEND:20081027T151500Z
UID:TALK14462@talks.cam.ac.uk
CONTACT:Dr Francis Pope
DESCRIPTION:Astrochemistry is the study of molecules outside the atmospher
 e of the Earth. Between stars\, there is highly diluted material composed 
 of gas-phase molecules and small dust particles. It is what we call the in
 terstellar medium. In the process of forming stars and planets\, this mate
 rial undergoes many different physical conditions with densities between 1
 0 and 10^12 particles per cm2 and temperatures between 5 and 10000K. The c
 hemistry taking place in the interstellar medium depends then on the type 
 of object that we are studying. In quiescent dense clouds (moderate densit
 ies\, low temperature and no UV photons) for instance\, chemistry at the s
 urface of dust particles plays a major role whereas at the surface of prot
 oplanetary disks (where planets form) the UV radiation form the star domin
 ates the chemistry. \n\nIn this presentation\, I will make a brief introdu
 ction to the type of chemistry that we find in the interstellar medium and
  will show some few examples of astrochemical problems.
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
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