研究成果藝廊
Early Planet Formation in Embedded Disks (eDisk). XIV. Flared Dust Distribution and Viscous Accretion Heating of the Disk around R CrA IRS 7B-a
圖片來源: Shigehisa Takakuwa
With the ALMA large program eDisk, we identified hot dust disks
around a number of protostars. One of such objects, R Cr A IRS 7B-a, exhibits
a peak brightness temperature of ~200 K (Figure 1a). With our
radiative transfer modeling, we realized that such a high dust brightness
temperature cannot be realized with the heating from the central
protostar only (Figure 1c). Including the viscous accretion heating in
the disk, we can reproduce the observed brightness temperature
of the dust disk (Figure 1b). In other words, those protostellar disks
are self-luminous, in sharp contrast to the disks around more evolved
Class II sources. Significant mass accretion event must be present
in the protostellar disks.
