A search for interstellar silicon nitride

Details A search for interstellar silicon nitride A search for interstellar silicon nitride

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..219z&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 1, 1984, p. 219-224. Research supported by the California Space I

Astronomy and Astrophysics

Astrophysics

23

Astronomical Spectroscopy, Interstellar Chemistry, Interstellar Matter, Silicon Nitrides, Abundance, Line Spectra

Scientific paper

A search for the N = 2 - 1 rotational transition of SiN at 87 GHz has established that the ratios of the abundances of this compound to CN, toward the four sources Orion-KL, IRC +10216, Sagittarius B2, and DR 21(OH), are significantly less than the Si-to-C ratio of 0.1. These ratios suggest that either Si is depleted onto grains where CN is present, or that ion-molecule chemistry does not favor the production of SiN. Si-30S has been detected toward IRC +10216, and a comparison with Si-28S and Si-29S yields terrestrial isotopic abundance ratios for Si.

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