Takayuki Tanigawa

MASS ESTIMATES OF A GIANT PLANET IN A PROTOPLANETARY DISK FROM THE GAP STRUCTURES

A giant planet embedded in a protoplanetary disk forms a gap. An analytic relationship among the gap depth, planet mass

ON THE VIABILITY OF THE MAGNETOROTATIONAL INSTABILITY IN CIRCUMPLANETARY DISKS

M_{p}

Meridional circulation of gas into gaps opened by giant planets in three-dimensional low-viscosity disks

, disk aspect ratio

Formation of a disc gap induced by a planet: effect of the deviation from Keplerian disc rotation

h_p

Mass constraint for a planet in a protoplanetary disk from the gap width

, and viscosity

FINAL MASSES OF GIANT PLANETS. II. JUPITER FORMATION IN A GAS-DEPLETED DISK

\alpha

CAPTURE OF PLANETESIMALS BY GAS DRAG FROM CIRCUMPLANETARY DISKS

has been found recently, and the gap depth can be written in terms of a single parameter

Modelling of deep gaps created by giant planets in protoplanetary disks

K= (M_{p}/M_{\ast})^2 h_p^{-5} \alpha^{-1}

Slowing Down Type II Migration of Gas Giants to Match Observational Data

. We discuss how observed gap features can be used to constrain the disk and/or planet parameters based on the analytic formula for the gap depth. The constraint on the disk aspect ratio is critical in determining the planet mass so the combination of the observations of the temperature and the image can provide a constraint on the planet mass. We apply the formula for the gap depth to observations of HL~Tau and HD~169142. In the case of HL~Tau, we propose that a planet with

Theoretical Model of Hydrogen Line Emission from Accreting Gas Giants

\gtrsim 0.3