Construction of dense core mass function with 3D MHD simulation data
speaker: Hideaki Takemura
Abstract:
Stars are formed in dense cores in the molecular clouds. Thus, it is crucial to understand how dense cores form from parental molecular clouds to reveal star formation processes. Since the evolution process of a star strongly depends on the mass, the mass is one of the most important properties of a dense core as well. The mass functions of dense cores (Core Mass Functions, CMFs), the mass spectrum of dense cores, are expected to have information of the core evolution and star formation processes. Many previous studies of CMFs toward nearby star-forming regions with single-dish telescopes have suggested that the CMFs resemble the stellar mass functions (Initial Mass Functions, IMFs). However, top-heavy CMFs are reported from recent ALMA continuum observations toward distant high-mass star-forming regions. Therefore, more detailed study is necessary to reveal the link CMF and IMF. As a first step, we compare CMFs constructed with 3D density data and 2D column density data of molecular cloud made from a result of 3D MHD simulation. In this presentation, I will show the result of dense core survey and discuss the properties of resultant CMFs.