Observations of the rotational transitions of OH from the Orion molecular cloud

Astronomy and Astrophysics – Astronomy

Scientific paper

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Emission Spectra, Far Infrared Radiation, Hydroxyl Radicals, Infrared Astronomy, Infrared Spectra, Interstellar Gas, Line Spectra, Molecular Clouds, Astronomical Spectroscopy, C-141 Aircraft, Molecular Rotation

Scientific paper

A summary of observed rotationally excited, far infrared OH line emissions from Orion-KL made using the Kuiper Airborne Observatory is given, together with a list of the resulting publications, talks, and lectures based on this data. In addition, a paper is appended, particularly addressing the (16)OH and (18)OH emission from Orion-KL. The first detections of the (16)OH (2)pi(1/2) to (2)pi(3/2) J = 3/2(-) to 3/2(+) rotational cross-ladder transition (53.351 micrometer) and the (18)OH (2)pi(3/2) J = 5/2(+) to 3/2(-) rotational ground-state transition (120.1719 micrometer). It is found that both of these lines exhibit a P-Cygni profile.

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