CCS Zeeman Observation toward a Dense Molecular Core in the Taurus Molecular Cloud

Details CCS Zeeman Observation toward a Dense Molecular Core in the Taurus Molecular Cloud CCS Zeeman Observation toward a Dense Molecular Core in the Taurus Molecular Cloud

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc..175s&link_type=abstract

Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam

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We made CCS Zeeman observation toward a dense molecular core in Taurus molecular cloud (TMC), L1521E, by using a new polarimeter system developed for the Nobeyama 45-m telescope. Since the lines of the rotational transitions of CCS radical are good tracers of dense regions (n(H2)~ 104-5 cm-3) and have relatively large Landè g factors, magnetic fields strengths in dense regions of dark cloud cores could be measured by Zeeman effect of the radical. Although some reported g factors of the radical were inconsistent with each other, we confirmed calculation values by laboratory microwave spectroscopy(Shinnaga and Yamamoto 1999). We used CCS JN=43 - 32 transition for the measurement the core. The measured magnetic field strength was 160 +/- 42 μG, which suggests that the core is in magnetically subcritical state.

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