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arXiv · 1808.01746

Studies of Turbulence Dissipation in Taurus Molecular Cloud with Core Velocity Dispersion (CVD)

Lei Qian·Di Li·Yang Gao·Haitao Xu·Zhichen Pan
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Abstract

Turbulence dissipation is an important process affecting the energy balance in molecular clouds, the birth place of stars. Previously, the rate of turbulence dissipation is often estimated with semi-analytic formulae from simulation. Recently we developed a data analysis technique called core-velocity-dispersion (CVD), which, for the first time, provides direct measurements of the turbulence dissipation rate in Taurus, a star forming cloud. The thus measured dissipation rate of $(0.45\pm 0.05)\times 10^{33} {\rm erg\ s^{-1}}$ is similar to those from dimensional analysis and also consistent with the previous energy injection rate based on molecular outflows and bubbles.

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Lei Qian, Di Li, Yang Gao, Haitao Xu, Zhichen Pan. 2018-08-06. Studies of Turbulence Dissipation in Taurus Molecular Cloud with Core Velocity Dispersion (CVD). https://doi.org/10.3847/1538-4357/aad780

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