Observations of protoplanetary disk structures

SM Andrews - Annual Review of Astronomy and Astrophysics, 2020 - annualreviews.org
The disks that orbit young stars are the essential conduits and reservoirs of material for star
and planet formation. Their structures, meaning the spatial variations of the disk physical …

The origin and evolution of multiple star systems

SSR Offner, M Moe, KM Kratter, SI Sadavoy… - arXiv preprint arXiv …, 2022 - arxiv.org
Observational advances over the last decade have enabled high-resolution, interferometric
studies of forming multiple systems, statistical surveys of multiplicity in star-forming regions …

Gravitational instabilities in circumstellar disks

K Kratter, G Lodato - Annual Review of Astronomy and …, 2016 - annualreviews.org
Star and planet formation are the complex outcomes of gravitational collapse and angular
momentum transport mediated by protostellar and protoplanetary disks. In this review, we …

The multifaceted planetesimal formation process

A Johansen, J Blum, H Tanaka, C Ormel… - arXiv preprint arXiv …, 2014 - arxiv.org
Accumulation of dust and ice particles into planetesimals is an important step in the planet
formation process. Planetesimals are the seeds of both terrestrial planets and the solid cores …

The eccentric cavity, triple rings, two-armed spirals, and double clumps of the MWC 758 disk

R Dong, S Liu, J Eisner, S Andrews… - The Astrophysical …, 2018 - iopscience.iop.org
Spatially resolved structures in protoplanetary disks hint at unseen planets. Previous
imaging observations of the transitional disk around MWC 758 revealed an inner cavity, a …

Asteroids were born big

A Morbidelli, WF Bottke, D Nesvorný, HF Levison - Icarus, 2009 - Elsevier
How big were the first planetesimals? We attempt to answer this question by conducting
coagulation simulations in which the planetesimals grow by mutual collisions and form …

Forming planetesimals in solar and extrasolar nebulae

E Chiang, AN Youdin - Annual Review of Earth and Planetary …, 2010 - annualreviews.org
Planets are built from planetesimals: solids larger than a kilometer that grow by colliding in
pairs. Planetesimals themselves are unlikely to form by two-body collisions alone; …

Multiple disk gaps and rings generated by a single Super-Earth

R Dong, S Li, E Chiang, H Li - The Astrophysical Journal, 2017 - iopscience.iop.org
We investigate the observational signatures of super-Earths (ie, planets with Earth-to-
Neptune mass), which are the most common type of exoplanet discovered to date, in their …

Spiral arms and a massive dust disk with non-Keplerian kinematics: possible evidence for gravitational instability in the disk of Elias 2–27

T Paneque-Carreño, LM Pérez, M Benisty… - The Astrophysical …, 2021 - iopscience.iop.org
To determine the origin of the spiral structure observed in the dust continuum emission of
Elias 2–27 we analyze multiwavelength continuum ALMA data with a resolution of∼ 0 farcs …

Protoplanetary disk turbulence driven by the streaming instability: nonlinear saturation and particle concentration

A Johansen, A Youdin - The Astrophysical Journal, 2007 - iopscience.iop.org
We present simulations of the nonlinear evolution of streaming instabilities in protoplanetary
disks. The two components of the disk, gas treated with grid hydrodynamics and solids …