HERSCHEL MEASUREMENTS OF MOLECULAR OXYGEN IN ORION

@article{Goldsmith2011HERSCHELMO,
  title={HERSCHEL MEASUREMENTS OF MOLECULAR OXYGEN IN ORION},
  author={Paul. F. Goldsmith and Ren{\'e} Liseau and Tom A. Bell and John H. Black and Jo-hsin Chen and David J. Hollenbach and Michael J. Kaufman and Di Li and Dariusz C. Lis and Gary J. Melnick and David A. Neufeld and Laurent Pagani and Ronald Snell and A. O. Benz and Edwin Anthony Bergin and Simon Bruderer and Paola Caselli and Emmanuel Caux and Pierre J. Encrenaz and Edith Falgarone and Maryvonne Gerin and Javier R. Goicoechea and {\AA}ke Hjalmarson and Bengt Larsson and Jacques Le Bourlot and Franck Le Petit and Massimo de Luca and Zs{\'o}fia Nagy and {\`E}velyne Roueff and Aa. Sandqvist and Floris van der Tak and Ewine F. van Dishoeck and Charlotte Vastel and Serena Viti and Umut A. Yıldız},
  journal={The Astrophysical Journal},
  year={2011},
  volume={737}
}
We report observations of three rotational transitions of molecular oxygen (O2) in emission from the H2 Peak 1 position of vibrationally excited molecular hydrogen in Orion. We observed the 487 GHz, 774 GHz, and 1121 GHz lines using the Heterodyne Instrument for the Far Infrared on the Herschel Space Observatory, having velocities of 11 km s−1 to 12 km s−1 and widths of 3 km s−1. The beam-averaged column density is N(O2) = 6.5 × 1016 cm−2, and assuming that the source has an equal beam-filling… 

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Communication: State-to-state inelastic scattering of interstellar O2 with H2.

TLDR
The ability to determine inelastic processes between O2 molecules and H2 both theoretically and experimentally and that the excitation of O2 in the interstellar medium can be correctly modeled are demonstrated.
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TLDR
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