119 citations
- University of TorontoCA6 papers
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8 papers · 1 filter
Geometry of dust rings in protoplanetary disks: the case of LkCa 15
Yansong Qian, Yanqin Wu
Dust properties in proto-planetary disks shape the pathways for planet formation. Here, we present a method to measure these properties in moderately inclined dust rings. Our metho…
Bouncing Grains Keep Protoplanetary Disks Bright
Yansong Qian, Yanqin Wu
Proto-planetary disks display the so-called size-luminosity relation, where their mm-wavelength fluxes scale linearly with their emitting areas. This suggests that these disks are…
Shadows Wreak Havocs in Transition Disks
Yansong Qian, Yanqin Wu
We demonstrate that shadows cast on a proto-planetary disk can drive it eccentric. Stellar irradiation dominates heating across much of these disks, so an uneven illumination can h…
Argon in beta Pictoris -- entrapment and release of volatile in disks
Yanqin Wu, Kadin Worthen, Alexis Brandeker +1
Chemical compositions of planets reveal much about their formation environments. Such information is well sought-after in studies of Solar System bodies and extra-solar ones. Here,…
Repelling Planet pairs by Ping-pong Scattering
Yanqin Wu, Renu Malhotra, Yoram Lithwick
The Kepler mission reveals a peculiar trough-peak feature in the orbital spacing of close-in planets near mean-motion resonances: a deficit and an excess that are a couple percent…
Irradiated Disks May Settle into Staircases
Taylor Kutra, Yanqin Wu, Yoram Lithwick
Much of a protoplanetary disk is thermally controlled by irradiation from the central star. Such a disk, long thought to have a smoothly flaring shape, is unstable to the so-called…