Physics
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lnp...793..161f&link_type=abstract
Jets from Young Stars IV, Lecture Notes in Physics, Volume 793. ISBN 978-3-642-02290-6. Springer-Verlag Berlin Heidelberg, 2010,
Physics
Scientific paper
The generation of shock wave is an inevitable consequence of the impact of a protostellar jet on the surrounding ambient material - dust and molecular gas - from which the protostar formed. The speeds of the jets, as deduced from the widths of spectral lines, are strongly supersonic, and a shock wave will propagate into the molecular gas. In these lectures, we shall be concerned with techniques for modelling the physical and chemical structure of such shock waves and for predicting their spectroscopic signatures. The ultimate objective is to relate the intensities and profiles of emission lines produced by the shock wave, which are observable quantities, to the dynamical characteristics of the jets and thence to the process of star formation.
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