Oral Presentation
First-look results of Early Planet Formation in Embedded Disk (eDisk): Revealing Heating Mechanism and Kinematic Structures of a Protostellar Disk by Model Analysis
Presenter: Kazuya Saigo (Kagoshima University)
We will report our ongoing modeling effort to reproduce observations of a target source of ALMA Large Program eDisk. Our eDisk project have observed 17 protostellar sources plus two sources from the archive at a spatial resolution of ∼5 au in the 1.3-mm dust continuum emission and C18O (2-1) + other 6 emission lines. Our radiative transfer modeling for the dust emission has found that a dusty disk passively heating by the central protostar cannot reproduce the observed bright dust-continuum emission and internal heating in the dusty disk, such as viscous accretion heating, is likely required to reproduce the observation. In addition, results of our model analysis show that radial separation of gas and dust distribution has been progressing while separation in the vertical direction (dust settling) has not been progressing much in a protostellar disk sample. Thus, by comparing ALMA high-resolution observations with detailed models through radiative transfer calculations, we can reveal the internal kinematic structures of gas and dust in protostellar disks.
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