Titlebook: Galactic and Extragalactic Infrared Spectroscopy; Proceedings of the X M. F. Kessler,J. P. Phillips Conference proceedings 1984 D. Reidel P

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Observational Constraints on Interstellar Chemistryon towards nearby hot stars, the question of molecule formation has accompanied the observational efforts. These early discoveries by Adams, Dunham, Swings, Rosenfeld and McKellar are separated by a gap of 28 years from the radio-discovery of the first polyatomic molecule ( ammonia, NH. ) in interst

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Infrared Spectroscopy of Interstellar Shockss and mass outflow from young stellar objects. There are two types of interstellar shocks: In J shocks, gas properties “jump” from their preshock to their postshock values in a shock front with a thickness < one mean free path; radiation is emitted behind the shock front, primarily in the visible an

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Infrared Hydrogen Emission Lines from H II Regions and ‘Protostars’t studies of H II regions (see, for example, review by Wynn-Williams and Becklin 1974) and of the Becklin-Neugebauer source in Orion (Penston, Allen and Hyland 1971) over the next few years generally confirmed the expectation that hydrogen recombination lines were to be found in H II regions but not

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CIS

Excitation Conditions in Molecular Cloudsphysical conditions and kinematics of the interstellar gas. By using different molecular transitions we have learned to investigate in quite some detail the molecular clouds, from their tenuous outer surroundings to their dense interiors. In effect molecular transitions are now being used to investi

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Submillimeter Observations of Molecules and the Structure of Giant Molecular Cloudsis on determination of the density and temperature structure as well as the velocity field in these objects. The presence of large scale temperature gradients is expected when looking towards embedded heating sources; the frequency with which the expected effects are seen in molecular line data give

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Conference proceedings 1984ontribute to all branches of astrophysics. One particular area of growth has been in spectroscopic capabilities at all infrared wavelengths. The purpose of the Symposium in Toledo was to review the scientific questions to be addressed via infrared spectroscopy and to provide, in the proceedings, a u