Other
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...310..383g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 310, Nov. 1, 1986, p. 383-391. Sponsorship: Naturvetenskapliga Forskningsra
Other
53
Abundance, Hydrocyanic Acid, Isomers, Molecular Clouds, Orion Nebula, Periodic Variations, Data Processing, Interstellar Matter, Ratios, Spectrographs
Scientific paper
Observations of the rare isotopes of HCN and HNC have been used to determine the relative abundance of these two chemical isomers along the central ridge of the Orion molecular cloud. The abundance ratio HCN/HNC decreases by more than an order of magnitude from the relatively warm plateau and hot core sources toward the KL nebula to the colder, more quiescent clouds to the north and south. Even in the cooler regions, however, the ratio is an order of magnitude larger than that found in previous investigations of cold dark clouds. The kinetic temperature in the regions studied is determined from new observations of methylacetylene (CH3CCH), together with other recent estimates of the gas temperature near KL. The results suggest that the warmer portions of the cloud are dominated by different chemical pathways that those in the general instellar cloud material.
Ellder Joel
Goldsmith Paul F.
Hjalmarson Å..
Irvine William M.
No associations
LandOfFree
Variations in the HCN/HNC abundance ratio in the Orion molecular cloud 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 Variations in the HCN/HNC abundance ratio in the Orion molecular cloud, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variations in the HCN/HNC abundance ratio in the Orion molecular cloud will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1148785