Physical conditions and heating/cooling processes in high mass star formation regions

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Models, Cooling Flows (Astrophysics), Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Radiative Heat Transfer, Spectrum Analysis, Star Formation, B Stars, Emission Spectra, Heating, Infrared Radiation, Line Spectra, Magnetic Fields, O Stars, Shock Waves, Solar Wind, Submillimeter Waves

Scientific paper

Radiation and winds from nearby OB stars dramatically affect the physical conditions, structure, and chemistry of dense molecular clouds. Observations and theoretical models of dense clouds in regions of massive star formation and the physical processes occurring there are discussed. Dense interstellar clouds primarily consist of molecules, atoms, and dust particles. Analysis of the infrared, submillimeter and radio line, and continuum radiation from these species are primary tools for studying the physical conditions and processes in these clouds. An overview of excitation and radiative transport of line and a continuum emission in these wavelength bands is presented and it is shown how physical parameters are derived from them. Heating and cooling processes in clouds near newly formed OB stars are discussed.

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