Observations of SiO toward OMC-1 - A new outflow source 1.5 arcmin south of Orion-KL?

Details Observations of SiO toward OMC-1 - A new outflow source 1.5 arcmin south of Orion-KL? Observations of SiO toward OMC-1 - A new outflow source 1.5 arcmin south of Orion-KL?

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...314l..49z&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 314, March 15, 1987, p. L49-L53.

Astronomy and Astrophysics

Astronomy

40

Interstellar Matter, Molecular Clouds, Orion Nebula, Silicon Oxides, Star Formation, Radio Sources (Astronomy)

Scientific paper

Observations of the J = 2-1 transition of thermal SiO have been carried out toward OMC-1. Approximately 1.5 arcmin south of the KL nebula and IRc2, a new moderately strong source of SiO emission with T(a)-asterisk of about 1 K has been detected. The emission appears to be confined to a region 30 arcsec or less in size and shows evidence of high-velocity wings extending + or - 12-15 km/s from line center, which may indicate the presence of an embedded star in its early stages. The SiO J - 2-1 line was sought at other positions in OMC-1 but was not detected except at (3N, 1E), where a weak narrow line was observed. Derived column densities and abundances at the 1.5-arcmin S, (3N, 1E), and KL positions suggest that SiO formation is favored in regions where outflows and high temperatures are present.

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