Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981sci...211..580f&link_type=abstract
Science, vol. 211, Feb. 6, 1981, p. 580-582. NASA-supported research
Astronomy and Astrophysics
Astronomy
16
Carbon Monoxide, Interstellar Matter, Molecular Clouds, Optical Heterodyning, Orion Nebula, Radio Astronomy, Submillimeter Waves, Emission Spectra, High Resolution
Scientific paper
Laser heterodyne observations of submillimeter emissions from carbon monoxide in the Orion molecular cloud are reported. High frequency and spatial resolution observations were made at the NASA Infrared Telescope Facility on Mauna Kea by the use of an optically pumped laser local oscillator and quasi-optical Schottky diode mixer for heterodyne detection of the J = 6 - 5 rotational transition of CO at 434 microns. Spectral analysis of the 434-micron emission indicates that the emitting gas is optically thin and is at a temperature above 180 K. Results thus demonstrate the potential contributions of ground-based high-resolution submillimeter astronomy to the study of active regions in interstellar molecular clouds.
Buhl David
Clifton B. J.
Erickson Neal R.
Fetterman Harold R.
Goldsmith Paul F.
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