Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...310..889l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 310, Nov. 15, 1986, p. 889-906.
Astronomy and Astrophysics
Astrophysics
4
Abundance, Astronomical Spectroscopy, Molecular Clouds, Molecular Spectroscopy, Radio Telescopes, Submillimeter Waves, Formaldehyde, Hydrocyanic Acid, Line Spectra, Millimeter Waves, Silicon Oxides
Scientific paper
The Texas MWO 4.9 m antenna has been used with a new broad-band heterodyne submillimeter receiver to make first detections of ≡two dozen new submillimeter wavelength molecular lines toward the OMC-1 and M17 SW molecular clouds. The lines detected in the 301 - 352 GHz band arise from the H2CO, CS, C34S, SiO, HCN, H13CN, CN, CCH, SO, SO2, and CH3OH molecules. The OMC-1 plateau emission becomes more prominent, compared to quiescent emission in line profiles. This provides evidence for a higher excitation in the plateau gas, since many of submillimeter lines arise from higher energy levels. The intense, probably thermalized high J SiO lines suggest a very hot core (TK ≈ 450 - 600K).
Loren Robert B.
Wootten Alwyn
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