CaltechAUTHORS
Published 1990 | Version public
Book Section - Chapter Metadata-only

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

Creators

  • 1. ROR icon University of California, Berkeley
  • 2. ROR icon University of Illinois Urbana-Champaign

Contributors

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

Identifiers

Eprint ID
106766
Resolver ID
CaltechAUTHORS:20201121-170820057

Funding

NASA
NAG 2-254

Dates

Created
2020-11-23
Created from EPrint's datestamp field
Updated
2021-11-16
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Physics Department
Series Name
Astrophysics and Space Science Library
Series Volume or Issue Number
158