Other
Scientific paper
Jan 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...211..108p&link_type=abstract
Astrophysical Journal, vol. 211, Jan. 1, 1977, pt. 1, p. 108-114.
Other
37
Abundance, Deuterium, Galactic Structure, Interstellar Matter, Milky Way Galaxy, Carbon 13, Cosmology, Emission Spectra, Galactic Evolution, Galactic Nuclei, Hydrocyanic Acid, Millimeter Waves, Stellar Evolution
Scientific paper
A survey of millimeter-wave line emission from the deuterated and carbon-13 isotopes of interstellar hydrocyanic acid (DCN and H-13CN) has been carried out. The results indicate that the (DCN)/(HCN) abundance ratio is about 100 times the 'local' (i.e., within about 200 pc of the sun) (D)/(H) ratio over a large portion of the Galaxy, with relatively little source-to-source variation. The (DCN)/(H-13CN) abundance ratio in Sgr B appears to be markedly lower than in the other sources. This apparent deuterium deficiency is associated with a greater amount of stellar processing of the material near the galactic center, implying that such processing leads to a net destruction of deuterium. This result seems to eliminate stellar activity as a principal source of observed deuterium.
Linke Richard A.
Penzias Arno A.
Wannier Peter G.
Wilson Hugh R.
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