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The Formation of Population III Stars in Gas Accretion Stage: Effects of Magnetic Fields
Masahiro N. Machida, Kentaro Doi
The formation of Population III stars is investigated using resistive magnetohydrodynamic simulations. Starting from a magnetized primordial prestellar cloud, we calculate the clou…
Conditions for Circumstellar Disk Formation: Effects of Initial Conditions and Sink Treatment
Masahiro N. Machida, Shu-ichiro Inutsuka, Tomoaki Matsumoto
The formation of a circumstellar disk in collapsing cloud cores is investigated with three-dimensional magnetohydrodynamic simulations. We prepare four types of initial cloud havin…
Formation, orbital and thermal evolution, and survival of planetary-mass clumps in the early phase of circumstellar disk evolution
Yusuke Tsukamoto, Masahiro N. Machida, Shuichiro Inutsuka
We report the results of our three-dimensional radiation hydrodynamics simulation of collapsing unmagnetized molecular cloud cores. We investigate the formation and evolution of th…
A Semi-Analytical Description for the Formation and Gravitational Evolution of Protoplanetary Disks
Sanemichi Z. Takahashi, Shu-ichiro Inutsuka, Masahiro N. Machida
We investigate the formation process of self-gravitating protoplanetary disks in unmagnetized molecular clouds. The angular momentum is redistributed by the action of gravitational…
Evolution of Protostellar Outflow around Low-mass Protostar
Masahiro N. Machida, Takashi Hosokawa
The evolution of protostellar outflow is investigated with resistive magneto-hydrodynamic nested-grid simulations that cover a wide range of spatial scales (\sim 1AU - 1pc). We fol…