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ALMA Measurements of Circumstellar Material in the GQ Lup System
Meredith A. MacGregor, David J. Wilner, Ian Czekala +7
We present ALMA observations of the GQ Lup system, a young Sun-like star with a substellar mass companion in a wide-separation orbit. These observations of 870 m continuum and C…
Spiral Density Waves in a Young Protoplanetary Disk
Laura M. Pérez, John M. Carpenter, Sean M. Andrews +20
Gravitational forces are expected to excite spiral density waves in protoplanetary disks, disks of gas and dust orbiting young stars. However, previous observations that showed spi…
The Coupled Physical Structure of Gas and Dust in the IM Lup Protoplanetary Disk
L. Ilsedore Cleeves, Karin I. Öberg, David J. Wilner +4
The spatial distribution of gas and solids in protoplanetary disks determines the composition and formation efficiency of planetary systems. A number of disks show starkly differen…
Evidence for a CO desorption front in the outer AS 209 disk
Jane Huang, Karin I. Oberg, Sean M. Andrews
Millimeter observations of CO isotopologues are often used to make inferences about protoplanetary disk gas density and temperature structures. The accuracy of these estimates depe…
Ringed Substructure and a Gap at 1 AU in the Nearest Protoplanetary Disk
Sean M. Andrews, David J. Wilner, Zhaohuan Zhu +8
We present long-baseline Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 870 micron continuum emission from the nearest gas-rich protoplanetary disk, around…
Constraints on Planetesimal Collision Models in Debris Disks
Meredith A. MacGregor, David J. Wilner, Claire Chandler +6
Observations of debris disks offer a window into the physical and dynamical properties of planetesimals in extrasolar systems through the size distribution of dust grains. In parti…