Constraining dust properties in YSOs with IR interferometry and radiative transfer simulation

Lei Chen
MTA CSFK CSI


Dust grain growth and dust dispersion are essential aspects in the evolution of protoplanetary disks. For Herbig Ae star HD 144432, we employ IR interferometry and Monte-Carlo radiative transfer to constrain the spatial distribution and grain size of the dust. The best-fit model that we found consists of an inner optically thin component at 0.21-0.32 AU and an optically thick outer disk at 1.4-10 AU. This gap region might be opened with planet-disk interaction or photoevaporation process. The inner component are likely dominated by sub-micron dust grains.