Meng-Hsien Shen (NTNU); Yueh-Ning Lee (NTNU)
Star formation occurs inside over-dense regions in molecular clouds. In recent years, observations have found filamentary structures in molecular clouds, which are highly associated with the prestellar cores. Observation of the Monocerous R2 region (Mon R2) suggests a sheet-like structure and shows a structure with several filaments converging into the central hub. We study the dynamics of this sheet-like structure and its evolution with a physical model. We consider the radial collapse of a sheet under self-gravity and solve the self-similar solutions. We reproduced surface density and velocity profiles which are compatible with observations of Mon R2. Finally, we study the development of filaments in this structure using perturbative analysis, with the goal to obtain the characteristic number of filaments and the line mass of each filament.