Infrared line emission from high-velocity outflows in star-forming regions

Astronomy and Astrophysics – Astronomy

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Absorption Spectra, Emission Spectra, Infrared Spectra, Infrared Spectroscopy, Shock Wave Interaction, Star Formation, Infrared Astronomy, Interstellar Gas, Line Spectra, Molecular Spectra, Shock Waves, Spectrum Analysis, Stellar Spectra

Scientific paper

The ways in which infrared (1 to 200 microns) spectroscopy is used to study high velocity outflows and their interactions with the surrounding molecular gas, are reviewed. It is shown that the near infrared lines of H2, H I, and CO, along with the mid-infrared transition of Si2, and the far infrared lines of OI, CO, OH, and HCN provide direct measurements of the density, temperature, and radiation background at various points in the outflow. In the scope of the work, the following topics are analyzed: the circumstellar environment, the intermediate distance cone, and the interface between the outflow and the parental cloud.

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