Heterodyne spectroscopy of the J = 22-21 CO line in Orion

Details Heterodyne spectroscopy of the J = 22-21 CO line in Orion Heterodyne spectroscopy of the J = 22-21 CO line in Orion

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...346l..97b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 346, Nov. 15, 1989, p. L97-L100.

Astronomy and Astrophysics

Astrophysics

12

Astronomical Spectroscopy, Carbon Monoxide, Orion Nebula, Emission Spectra, Optical Heterodyning, Shock Fronts, Spatial Resolution, Star Formation

Scientific paper

The J = 22-21 line of (C-12)O at 2528 GHz was observed in the IRc2 region of Orion. The spectra at 0.6 km/s resolution show both plateau emission with FWHM of about 35 km/s and a narrower component with FWHM of about 8 km/s. Comparison with heterodyne data of similar quality on the J = 17-16 line indicates that the broad and narrow components both originate in gas with an excitation temperature of about 600 K.

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