Detection of the CN Zeeman effect in molecular clouds

Richard M. Crutcher, Thomas H. Troland, Bernard Lazareff, Gabriel Paubert, Ilya Kazès

Research output: Contribution to journalArticlepeer-review


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 Blos(OMC1) = -0.36 ± 0.08, Blos(DR21OH1) = -0.36 ± 0.10, Blos(DR21OH2) = -0.71 ± 0.12, and Blos(M17SW) = -0.33 ± 0.14 mG. The theoretical implications of these results are discussed.

Original languageEnglish (US)
Pages (from-to)L121-L124
JournalAstrophysical Journal
Issue number2 PART 2
StatePublished - Apr 1 1999


  • ISM: clouds
  • ISM: magnetic fields
  • Stars: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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