Detection of the CN Zeeman Effect in Molecular Clouds

Astronomy and Astrophysics – Astronomy

Scientific paper

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77

Ism: Clouds, Ism: Magnetic Fields, Stars: Formation

Scientific paper

Observations of the Zeeman effect in the 3 mm lines of CN have been carried out with the 30 m IRAM telescope toward seven dense molecular clouds. Detections were achieved toward the Orion Molecular Cloud 1 (OMC1), toward two cores in the DR21OH molecular cloud, and probably toward the M17SW molecular cloud. The line-of-sight magnetic field strengths inferred are B_los(OMC1)=-0.36+/-0.08, B_los(DR21OH_1)=-0.36+/-0.10, B_los(DR21OH_2)=-0.71+/-0.12, and B_los(M17SW)=-0.33+/-0.14 mG. The theoretical implications of these results are discussed.

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