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A comparative study of star formation efficiencies in nearby molecular cloud complexes

  • Yasuo Fukui (a1) and Akira Mizuno (a1)

Abstract

We present new observational data of 13CO J=1−0 emission in nearby molecular cloud complexes in Taurus, Ophiuchus, and Orion, and compare star formation efficiencies in the three regions. The 13CO data have been obtained with the 4m millimeter telescope at Nagoya equipped with a SIS receiver having receiver temperature of 23 K in double side band. The molecular distribution is often characterized by highly filamentary, continuous distribution, rather than well defined clumps. Active star formation is taking place almost exclusively in the densest regions in the molecular distributions. The filamentary distributions often show velocity gradients perpendicular to their elongation, suggesting that they are spinning around their major axes. Roles of photoionization and the spinning motion on formation of stars and clouds are discussed as a step toward understanding the mechanism regulating star formation efficiencies.

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References

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A comparative study of star formation efficiencies in nearby molecular cloud complexes

  • Yasuo Fukui (a1) and Akira Mizuno (a1)

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