A dense molecular outflow in Orion B

Astronomy and Astrophysics – Astronomy

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Gas Jets, Jet Flow, Molecular Clouds, Orion Nebula, Absorption Spectra, Formaldehyde, Optical Thickness, Red Shift

Scientific paper

The authors present HCO+ J = 3-2 maps with 60 arcsec resolution of Orion B. They have detected a dense (≡105cm-3) component in the Orion B bipolar outflow. The maps of the cloud core give evidence that the evolution of the outflow has been influenced by the local density gradients in the molecular cloud. The authors have also made a search for H2S(1) υ = 1-0 emission along the outflow axis and have set an upper limit of 2×10-20W cm-2(3σ). H2 emission was detected 80 arcsec east of the outflow centre at a level of 5.5×10-20W cm-2.

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