The Formation and Evolution of Filamentary Molecular Clouds
Earlier investigations on self-gravitational formation, collapse, and fragmentation of filamentary molecular clouds with and without magnetic field are reviewed and summarized well in terms of basic physics. However, the earlier works are mainly based on a simple equation of state such as the isothermal one. The recent progress in our understanding of multi-phase nature of interstellar medium will potentially improve the picture of filamentary molecular clouds. Future theoretical work in this direction is briefly addressed and a possible interpretation of the recent remarkable observation of filamentary clouds will be suggested.