Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...244l..33w&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 244, no. 2, April 1991, p. L33-L36.
Astronomy and Astrophysics
Astrophysics
12
Astronomical Spectroscopy, Carbon Monoxide, Herbig-Haro Objects, Molecular Clouds, Orion Nebula, Star Formation, Formaldehyde, Infrared Spectra, Radiation Distribution
Scientific paper
The detection of a localized source of enhanced high-velocity CO emission 2 arcmin north of Orion-KL is reported, and the emission measurements are carried out in order to determine the molecular mass and density of WJ5. It is shown that CO-line wings extend to more than 12/km, and that the source is coincident with the Herbig-Haro object M42-HH10. The morphology of CO maps, the coincidence with the H(2)CO peak found by WJ, a comparison of CO lineshapes toward WJ5 and those obtained from an average over the surrounding area, and the presence of quasi-thermal SiO emission are used to prove that the source of the CO line-wings is close to WJ5. It is observed that the localized CO source may be the site of the interaction of a high-velocity flow with dense quiescent gas; more likely, this region contains a young star.
Mauersberger Rainer
Wilson Thomas L.
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