Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253l..83b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 253, Feb. 15, 1982, p. L83-L87.
Astronomy and Astrophysics
Astronomy
26
Hydrogen, Infrared Astronomy, Line Spectra, Molecular Clouds, Molecular Spectra, Orion Nebula, Fabry-Perot Interferometers, High Resolution
Scientific paper
The pure rotational S(2) line of H2 at 12.28 microns was sought in 44 positions in the Orion Molecular Cloud with 6-arcsec beams and 35 km/s spectral resolution; and it was detected in 27 positions. The lines are approximately symmetric and have full widths at half-maximum ranging from 100 km/s down to the resolution limit. The distribution of intensities and line shapes is largely consistent with that observed in the 2-micron hydrogen transitions; however, unexpectedly complex line profiles and point-to-point variations in line shapes appear, particularly in the region near IRc9.
Beck Sara C.
Bloemhof Eric E.
Lacy John H.
Serabyn Eugen
Smith Harold A.
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