3 papers
astro-ph1998
CO, CI and CII observations of NGC 7023
M. Gerin, T. G. Phillips, J. Keene +2
We present new data on the photodissociation regions associated with the reflection nebula NGC7023. 13CO(3-2) emission, delineates a molecular cloud containing a cavity largely dev…
astro-ph1996
The 12C/13C Isotopic Ratio in Photodissociated Gas in M42
R. T. Boreiko, A. L. Betz
We have observed the 158 micron 2P3/2-2P1/2 fine-structure line of 12C II simultaneously with the F=2-1 and F=1-0 hyperfine components of this transition in 13C II in the Orion pho…
astro-ph1996
Heterodyne Spectroscopy of the 63 m O I Line in M42
R. T. Boreiko, A. L. Betz
We have used a laser heterodyne spectrometer to resolve the emission line profile of the 63 micron 3P1 - 3P2 fine-structure transition of O I at two locations in M42. Comparison of…