The Mass Budgets and Spatial Scales of Exoplanet Systems and Protoplanetary Disks [PDF]
Astrophysical Journal, 2021 Planets are born from disks of gas and dust, and observations of protoplanetary disks are used to constrain the initial conditions of planet formation.
G. Mulders +3 more
semanticscholar +1 more source
Investigating the Relative Gas and Small Dust Grain Surface Heights in Protoplanetary Disks [PDF]
Astrophysical Journal, 2021 Dust evolution in protoplanetary disks from small dust grains to pebbles is key to the planet formation process. The gas in protoplanetary disks should influence the vertical distribution of small dust grains (∼1 μm) in the disk.
Evan A. Rich +9 more
semanticscholar +1 more source
CO Depletion in Protoplanetary Disks: A Unified Picture Combining Physical Sequestration and Chemical Processing [PDF]
Astrophysical Journal, 2020 The gas-phase CO abundance (relative to hydrogen) in protoplanetary disks decreases by up to two orders of magnitude from its interstellar medium value of ∼10−4, even after accounting for freeze-out and photodissociation. Previous studies have shown that
S. Krijt +5 more
semanticscholar +1 more source
On the Diversity of Asymmetries in Gapped Protoplanetary Disks [PDF]
Astronomical Journal, 2020 Protoplanetary disks with large inner dust cavities are thought to host massive planetary or substellar companions. These disks show asymmetries and rings in the millimeter continuum caused by dust trapping in pressure bumps and potentially vortices or ...
N. van der Marel +9 more
semanticscholar +1 more source
Tracing the Formation History of Giant Planets in Protoplanetary Disks with Carbon, Oxygen, Nitrogen, and Sulfur [PDF]
Astrophysical Journal, 2020 The composition of giant planets is imprinted by their migration history and the compositional structure of their hosting disks. Studies in recent literature have investigated how the abundances of C and O can constrain the formation pathways of giant ...
D. Turrini +9 more
semanticscholar +1 more source
Gas and Dust Dynamics in Starlight-heated Protoplanetary Disks [PDF]
Astrophysical Journal, 2020 Theoretical models of the ionization state in protoplanetary disks suggest the existence of large areas with low ionization and weak coupling between the gas and magnetic fields. In this regime hydrodynamical instabilities may become important.
M. Flock +5 more
semanticscholar +1 more source
Finding Substructures in Protostellar Disks in Ophiuchus
The Astronomical Journal, 2023 High-resolution, millimeter observations of disks at the protoplanetary stage reveal substructures such as gaps, rings, arcs, spirals, and cavities. While many protoplanetary disks host such substructures, only a few at the younger protostellar stage ...
Arnaud Michel +7 more
doaj +1 more source
How Efficient Is the Streaming Instability in Viscous Protoplanetary Disks? [PDF]
Astrophysical Journal, 2020 The streaming instability is a popular candidate for planetesimal formation by concentrating dust particles to trigger gravitational collapse. However, its robustness against the physical conditions expected in protoplanetary disks is unclear.
Kan Chen, Min-Kai Lin
semanticscholar +1 more source
An ALMA Survey of H2CO in Protoplanetary Disks [PDF]
Astrophysical Journal, 2020 H2CO is one of the most abundant organic molecules in protoplanetary disks and can serve as a precursor to more complex organic chemistry. We present an Atacama Large Millimeter/submillimeter Array survey of H2CO toward 15 disks covering a range of ...
J. Pegues +15 more
semanticscholar +1 more source
Hints on the origins of particle traps in protoplanetary disks given by the Mdust – M⋆ relation [PDF]
Astronomy & Astrophysics, 2020 Context. Demographic surveys of protoplanetary disks, carried out mainly with the Atacama Large Millimeter/submillimete Array, have provided access to a large range of disk dust masses (Mdust) around stars with different stellar types and in different ...
P. Pinilla, I. Pascucci, S. Marino
semanticscholar +1 more source