Alice C. Quillen

TL;DR: In this article, the authors examined the vertical structure of the gap edges of gap edges and found that the planet excites spiral arms with significant (Mach number of a half) vertical motion of the gas, and discussed the implications of these motions.

TL;DR: In this article, a four-planar system with a debris disk and a planetesimal disk is considered and the authors find that the role of the disk in the lifetime of the system can influence the system's stability.

TL;DR: In this article, a nuclear shell-like bipolar structure was detected in the radio galaxy Centaurus A. This shell has not been previously detected in a radio galaxy and, if confirmed, would be the first extragalactic nuclear shell detected at midinfrared wavelengths.

TL;DR: In this paper, the authors consider the minimum mass planet that is capable of opening a gap in an α-accretion disk and identify two radii at which an inwardly migrating planet may become able to open a gap and so slow its migration; they also identify the radius at which the heating from viscous dissipation is similar to that from stellar radiation in a flared disk, and the radius of the disk has optical depth order 1 in a self-shadowed disk.

TL;DR: In this paper, the authors investigate isophotal properties and dust morphology in the nuclear regions of 84 radio galaxies, imaged in the optical and near-infrared as part of Hubble Space Telescope snapshot surveys.