Photo Credit: Guang-Xing
Gravity is one fundamental force in nature. In molecular interstellar medium, it is responsible for collecting gas from larger to smaller scales and finally into stars. However the relative importance of gravity with respect to other factors e.g. turbulence and magnetic field at various scales reamins unclear.
We have proposed a new G-virial method which estimates the importance of gravity based on observational data. The method can be used to identify gravitationally-coherent regions in the position-position-velocity space and to quantify the properties of the regions.
The method is available here.