Rogel Mari D. Sese 氏（筑波大学 宇宙理論研究室）

「Radiation Hydrodynamic Structure of Massive Circumstellar Disks」

- abstract -
The formation of massive stars has been one of the unresolved problems in stellar astrophysics. Recent observational evidences suggest that massive star formation occurs by accreting material from a circumstellar disk, similar to low mass stars.

However, such disks are said to be short-lived due to the high amount of radiation coming from the massive protostar. Thermal pressure from surrounding HII regions further hinders the accretion. In this work, we try to develop a radiation hydrodynamic model of massive circumstellar disks. The model uses the flux-limited diffusion (FLD) approximation to determine the temperature profile of the circumstellar disk.

Further work aims to develop a comprehensive 2D model of massive circumstellar disks that includes radiation and thermal pressure, rotation and magnetic fields.

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