59 citations · 166 across the 17 of their papers we have counts for
17 papers
Searching for Embedded Protoplanets with the Keck/NIRC2 Vortex Coronagraph: Confirmation of a Core-accretion Planet in the Narrow Gap of the Elias 2-24 Disk
Andrea Bernardi, Alice Zurlo, Lucas A. Cieza +8
We present high-contrast imaging observations of seven stars obtained with the Keck/NIRC2 vortex coronagraph between 2018 May and June in the and bands. All targets host…
Disk survey in the Serpens star-forming region: Environmental effects in nearby star-forming regions
Simin Tong, Nienke van der Marel, Jonathan P. Williams +1
The external environment where protoplanetary disks are embedded regulates disk evolution. External irradiation, which heats and evaporates gas, as well as frequent stellar encount…
Keck Observations in the INfrared of Taurus and Oph Exoplanets And Ultracool dwarfs (KOINTREAU) I: A Planetary-Mass Companion and a Disk-Obscured Stellar Companion Discovered in Taurus
Samuel A. U. Walker, Michael C. Liu, Dimitri Mawet +10
We present the first discoveries from Keck Observations in the INfrared of Taurus and Oph Exoplanets And Ultracool dwarfs (KOINTREAU), an adaptive optics imaging survey of youn…
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): V721 CrA and BN CrA have wide and structured disks in polarised IR
Gabriele Columba, Elisabetta Rigliaco, Raffaele Gratton +8
We present near-infrared scattered-light observations of the disks around two stars of the Corona Australis star-forming region, V721 CrA, and BN CrA, obtained with VLT/SPHERE, in…
Dynamical Analysis of the HD 169142 Planet-Forming Disk: Twelve Years of High-Contrast Polarimetry
Miles Lucas, Michael Bottom, Ruobing Dong +19
We present a dynamical analysis of the HD 169142 planet-forming disk based on high-contrast polarimetric imaging over a twelve-year observational period, offering insights into its…
Radiative Transfer Modeling of a Shadowed Protoplanetary Disk assisted by a Neural Network
Jonathan P. Williams, Myriam Benisty, Christian Ginski +2
We present observations and detailed modeling of a protoplanetary disk around the T Tauri star, V1098 Sco. Millimeter wavelength data from the Atacama Large Millimeter Array (ALMA)…
A high-resolution survey of protoplanetary disks in Lupus and the nature of compact disks
Osmar M. Guerra-Alvarado, Nienke van der Marel, Jonathan P. Williams +4
Most of the exoplanets discovered in our galaxy to date orbit low-mass stars, which tend to host small disks in their early stages. To better elucidate the link between planet form…
The Ophiuchus DIsk Survey Employing ALMA (ODISEA): Complete Size Distributions for the 100 Brightest Disks Across Multiplicity and SED Classes
Anuroop Dasgupta, Lucas A. Cieza, Camilo I. Gonzalez Ruilova +16
The size of a protoplanetary disk is a fundamental property, yet most remain unresolved, even in nearby star-forming regions (d 140-200 pc). We present the complete continuu…
High Resolution ALMA Observations of Richly Structured Protoplanetary Disks in Orionis
Jane Huang, Megan Ansdell, Tilman Birnstiel +5
ALMA has detected substructures in numerous protoplanetary disks at radii from a few to over a hundred au. These substructures are commonly thought to be associated with planet for…
Dust Drift Timescales in Protoplanetary Disks at the Cusp of Gravitational Instability
Jonathan P. Williams, Caleb Painter, Alexa R. Anderson +1
Millimeter emitting dust grains have sizes that make them susceptible to drift in protoplanetary disks due to a difference between their orbital speed and that of the gas. The char…
A Survey of Protoplanetary Disks Using the Keck/NIRC2 Vortex Coronagraph
Nicole L. Wallack, Jean-Baptiste Ruffio, Garreth Ruane +34
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of protoplanetary disks in the millimeter continuum have shown a variety of radial gaps, cavities, and spira…
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): PDS 111, an old T Tauri star with a young-looking disk
Annelotte Derkink, Christian Ginski, Paola Pinilla +20
The interplay between T Tauri stars and their circumstellar disks, and how this impacts the onset of planet formation has yet to be established. We studied a seemingly old T Tauri…
SCExAO/CHARIS Multi-Wavelength, High-Contrast Imaging of the BD+45598 Debris Disk
Maria Vincent, Kellen Lawson, Thayne Currie +5
We present a multi-wavelength (1.16m-2.37m) view of the debris disk around BD+45598, using the Subaru Coronagraphic Extreme Adaptive Optics system paired with the Cor…
Mass assembly in massive star formation: a fragmentation study of ATLASGAL clumps
Jagadheep D. Pandian, Rwitika Chatterjee, Timea Csengeri +3
The mass assembly in star forming regions arises from the hierarchical structure in molecular clouds in tandem with fragmentation at different scales. In this paper, we present a s…
V1094 Sco: a rare giant multi-ringed disk around a T Tauri star
S. E. van Terwisga, E. F. van Dishoeck, M. Ansdell +11
A wide variety of ring-like dust structures has been detected in protoplanetary disks, but their origin and frequency are still unclear. We characterize the structure of an extende…
Dipper disks not inclined towards edge-on orbits
M. Ansdell, E. Gaidos, J. P. Williams +5
The so-called "dipper" stars host circumstellar disks and have optical and infrared light curves that exhibit quasi-periodic or aperiodic dimming events consistent with extinction…
Astronomical Evidence for the Rapid Growth of Millimeter Sized Particles in Protoplanetary Disks
Jonathan P. Williams
I summarize recent surveys of protoplanetary disks at millimeter wavelengths and show that the distribution of luminosity, equivalent to the mass in small dust grains, declines rap…