Publications (10)
Ultraharmonics and Secondary Spiral Wakes Induced by a Planet
Wing-Kit Lee
We investigate the ultraharmonics response of a protoplanetary disk to an orbiting planet. We find that the multi-armed spiral structure can be excited by the higher-order forcing…
The Effect of Vertical Temperature Gradient on the Propagation of Three-dimensional Waves in a Protoplanetary Disk
Wing-Kit Lee, Pin-Gao Gu
Excitation and propagation of waves in a thermally stratified disk with an arbitrary vertical temperature profile are studied. Previous analytical studies of three-dimensional wave…
Eccentric Modes in Disks With Pressure and Self-Gravity
Wing-Kit Lee, Adam M. Dempsey, Yoram Lithwick
Accretion disks around stars, or other central massive bodies, can support long-lived, slowly precessing disturbances in which the fluid motion is nearly Keplerian with non-z…
Pileups and Migration Rates for Planets in Low Mass Disks
Adam M. Dempsey, Wing-Kit Lee, Yoram Lithwick
We investigate how planets interact with viscous accretion disks, in the limit that the disk is sufficiently low mass that the planet migrates more slowly than the disk material. I…
Spiral Density Waves in M81. II. Hydrodynamic Simulations for Gas Response to Stellar Spiral Density Waves
Hsiang-Hsu Wang, Wing-Kit Lee, Ronald E. Taam +2
Gas response to the underlying stellar spirals is explored for M81 using unmagnetized hydrodynamic simulations. Constrained within the uncertainty of observations, 18 simulations a…
Long-Lived Eccentricities in Accretion Disks
Wing-Kit Lee, Adam M. Dempsey, Yoram Lithwick
Accretion disks can be eccentric: they support modes that are global and slowly precessing. But whether the modes remain trapped in the disk---and hence are long-lived---depe…
JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies: I. Survey overview and first results
Amelie Saintonge, Christine D. Wilson, Ting Xiao +88
JINGLE is a new JCMT legacy survey designed to systematically study the cold interstellar medium of galaxies in the local Universe. As part of the survey we perform 850um continuum…
Feathering Instability of Spiral Arms. I: Formulation of the Problem
Wing-Kit Lee, Frank H. Shu
In this paper we study the feathering substructures along spiral arms by considering the perturbational gas response to a spiral shock. Feathers are density fluctuations that jut o…
Probing the Turbulence Dissipation Range and Magnetic Field Strengths in Molecular Clouds. II. Directly Probing the Ion-neutral Decoupling Scale
Kwok Sun Tang, Hua-Bai Li, Wing-Kit Lee
The linewidth of ions has been observed to be systematically narrower than that of the coexisting neutrals in molecular clouds (Houde et al. 2000) and been interpreted as the signa…
Feathering Instability of Spiral Arms. II. Parameter Study
Wing-Kit Lee
We report the results of a parameter study of the feathering stability in the galactic spiral arms. A two-dimensional razor-thin magnetized self-gravitating gas disk with an impose…