Deuterated ammonia toward the Orion Nebula

Details Deuterated ammonia toward the Orion Nebula Deuterated ammonia toward the Orion Nebula

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...219l..49r&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 219, Jan. 1, 1978, p. L49-L53.

Astronomy and Astrophysics

Astronomy

14

Ammonia, Deuterium Compounds, Electron Transitions, Interstellar Matter, Abundance, Gas Density, Molecular Energy Levels, Molecular Rotation, Nebulae, Population Inversion, Radio Astronomy

Scientific paper

The detection of transitions in NH2D at 85926.2 and 110153.4 MHz from the Orion molecular cloud is reported. An 11-m radio telescope with an 80-120 GHz cooled Cassegrain receiver and a tunable quasi-optical rejection filter was used in the investigations. Equations of statistical equilibrium for the lowest 34 energy levels of NH2D were solved. It seems unlikely that the observed lines arise in the very extended CO cloud. However, they could originate either in the molecular 'ridge' or the unresolved (Kleinmann-Low) core of the cloud or both. A column density of about 50 trillion/sq cm is deduced. The NH2D spectra, with 1 MHz resolution, are shown in a graph. Using previously reported column densities for NH3, a value of 0.05 with an estimated maximum uncertainty factor of 10 is found for the ratio NH2D/NH3.

Affiliated with

Also associated with

No associations

Rating

Deuterated ammonia toward the Orion Nebula does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Deuterated ammonia toward the Orion Nebula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deuterated ammonia toward the Orion Nebula will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-943607