G30.79~FIR~10: A gravitationally bound infalling high-Mass star forming clump

Details G30.79~FIR~10: A gravitationally bound infalling high-Mass star forming clump G30.79~FIR~10: A gravitationally bound infalling high-Mass star forming clump

2010-06-26

arxiv.org/abs/1006.5093v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Accepted for publication by Astronomy and Astrophysics

Scientific paper

Infalling motions were detected and modeled toward this source. A mean infall velocity of 0.5 km/s with an infall mass rate of 5x10^-3 Solar masses per year was obtained. Also, a previously estimated value for the magnetic field strength in the plane of the sky was refined to be 855 micro Gauss which we used to calculate a mass-to-magnetic flux ratio of 1.9, or super-critical. The virial mass from turbulent motions was also calculated finding Mvir=563 solar masses, which gives a ratio of Msubmm/Mvir=5.9. Both values strongly suggest that this clump must be in a state of gravitational collapse.

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