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Published 1990 | public
Book Section - Chapter

Plateau emission from Orion in the CO J=17−16 Line

Abstract

High-resolution spectra of the J=17−16 CO line (1956 GHz) in the BN-KL region of Orion have been obtained with a heterodyne spectrometer. The profiles show a broad component with 30 km s⁻¹ (FWHM) linewidth and a narrower 8 km s⁻¹ component. The broader plateau emission detected over a range of transitions from J=1–0 to J=17−16 is analyzed under the assumptions of thermal equilibrium and optically thin wings to deduce an excitation temperature of 180 ± 50 K and minimum column density of 1 X 10¹⁸ cm⁻² for CO in this component.

Additional Information

© Springer Science+Business Media Dordrecht 1990. This work was performed as part of the KAO Airborne Astronomy Program under NASA Grant NAG 2-254.

Additional details

Created:
August 19, 2023
Modified:
March 5, 2024