Orion B (NGC 2024). III - BIMA SO J(K) = 2(2)-1(1) observations - Evidence for peculiar sulfur chemistry

Details Orion B (NGC 2024). III - BIMA SO J(K) = 2(2)-1(1) observations - Evidence for peculiar sulfur chemistry Orion B (NGC 2024). III - BIMA SO J(K) = 2(2)-1(1) observations - Evidence for peculiar sulfur chemistry

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389..325b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 389, April 10, 1992, p. 325-337. Research supported by University of Illino

Astronomy and Astrophysics

Astronomy

5

Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Radio Sources (Astronomy), Star Formation, Sulfur Oxides, Abundance, Formyl Ions, H Ii Regions, Optical Thickness, Spatial Resolution

Scientific paper

Aperture synthesis maps are presented of SO J(K) = 2(2)-1(1) emission at 86.093938 GHz of the molecular cloud Orion B obtained from combined BIMA/NRAO 12-m data. The spatial resolution is 11 x 7 arcsec and the velocity resolution is 0.54 km/s. The maps show fine structure in the dense molecular core, the main features being two relatively compact components aligned with the long quiescent NS-oriented ridge of previous maps. Most notable, however, is the approximately 1-2 km/s blueshift of this line with respect to other high-density tracers of the main core. Implications of these data for the chemistry of SO in dense clouds are discussed.

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