Gas Flow across Gaps in Protoplanetary Disks

摘要: We analyze the gas accretion flow through a planet-produced gap in protoplanetary disk. adopt α-disk model and ignore effects of planetary migration. develop semianalytic, one-dimensional that accounts for planet as mass sink also carry out two-dimensional hydrodynamic simulations embedded The predictions rate based on semianalytic generally agree with at 25% level. Through these models, we are able to explore steady state disk structures over large spatial ranges. presence an accreting ~1MJ significantly lowers density within region several times planet's orbital radius. across (and onto central star) is typically 10%-25% outside orbit planet, planet-to-star ratios range from 5 × 10-5 1 10-3.