We will show our models to reproduce images of protostellar disks observed with our ALMA Large Program; Early Planet Formation in Embedded Disks (eDisk). eDisk has 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, C18O (2-1), and the other band 6 lines. The 1.3-mm images of eDisk targets show inclined bright dusty disks associated with the protostars with a typical radius of 50-100 au. Several of those disks as seen in the 1.3-mm dust-continuum emission exhibit a high peak brightness temperature of >150 K, and asymmetric intensity distributions along the minor axes. Our radiative transfer modeling of the dust emission has found that a dusty disk passively heating by the central protostar cannot reproduce the observed bright dust-continuum emission. Internal heating in the dusty disk, such as viscous accretion heating, is likely required to reproduce the observed high brightness temperature of the 1.3-mm emission. The observed asymmetric intensity distributions along the minor axes can be interpreted by the dust flaring coupled with the optically thick 1.3-mm emission. Furthermore, our modeling has revealed that a larger radius of the molecular gas than that of the dust is required to reproduce both the dust and C18O distribution. We will summarize these results in our poster.
[Poster PDF File]