Filaments, Star Formation and Magnetic Fields
Recent galactic wide surveys with Herschel Space Telescope reveal wide spread filamentary structures in molecular clouds. These filaments may form from compression of large scale flows. However, magnetic fields can modulate and even dominate the process. We conducted surveys with the (E)VLA and SMA of filamentary clouds in spectral lines and dust continuum to investigate their physical conditions and kinematics with the goal of understanding their role in massive star formation. I will present results from these surveys, and preliminary results from an SMA legacy project that images dust polarization in order to understand the role of magnetic fields in the formation of filaments and dense molecular cores.