Structure Function Scaling in the Taurus and Perseus Molecular Cloud Complexes

Details Structure Function Scaling in the Taurus and Perseus Molecular Cloud Complexes Structure Function Scaling in the Taurus and Perseus Molecular Cloud Complexes

2002-07-25

arxiv.org/abs/astro-ph/0207568v1

Astrophys.J. 583 (2003) 308-313

Astronomy and Astrophysics

Astrophysics

submitted to ApJ

Scientific paper

10.1086/345351

We compute the structure function scaling of the integrated intensity images of two J=1-0 13CO maps of Taurus and Perseus. The scaling exponents of the structure functions follow the velocity scaling of supersonic turbulence, suggesting that turbulence plays an important role in the fragmentation of cold interstellar clouds. The data also allows to verify the validity of the two basic assumptions of the hierarchical symmetry model, originally proposed for the derivation of the velocity structure function scaling. This shows that the same hierarchical symmetry holds for the projected density field of cold interstellar clouds.

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