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The Evolution of the Water Distribution in a Viscous Protoplanetary Disk [PDF]

open access: green, 2005
(Abridged) Astronomical observations have shown that protoplanetary disks are dynamic objects through which mass is transported and accreted by the central star.
Ciesla, Fred J., Cuzzi, Jeffrey N.
core   +3 more sources

Radial and Vertical Constraints on the Icy Origin of H2CO in the HD 163296 Protoplanetary Disk

open access: goldThe Astrophysical Journal
H _2 CO is a small organic molecule widely detected in protoplanetary disks. As a precursor to grain-surface formation of CH _3 OH, H _2 CO is considered an important precursor of O-bearing organic molecules that are locked in ices.
Claudio Hernández-Vera   +8 more
doaj   +2 more sources

Finding Substructures in Protostellar Disks in Ophiuchus

open access: yesThe 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

Herschel evidence for disk flattening or gas depletion in transitional disks [PDF]

open access: yes, 2014
Transitional disks are protoplanetary disks characterized by reduced near- and mid-infrared emission with respect to full disks. This characteristic spectral energy distribution indicates the presence of an optically thin inner cavity within the dust ...
Andrews, S.   +8 more
core   +13 more sources

The Mg/Fe ratio of silicate minerals in the meteoritic materials and in the circumstellar environment: A case study for the chondritic-like composition

open access: yesOpen Astronomy, 2021
Kaba meteorite as a reference material (one of a least metamorphosed and most primitive carbonaceous chondrites fell on Earth) was chosen for this study providing an adequate background for study of the protoplanetary disk or even the crystallization ...
Futó Péter   +9 more
doaj   +1 more source

PPDONet: Deep Operator Networks for Fast Prediction of Steady-state Solutions in Disk–Planet Systems

open access: yesThe Astrophysical Journal Letters, 2023
We develop a tool, which we name Protoplanetary Disk Operator Network (PPDONet), that can predict the solution of disk–planet interactions in protoplanetary disks in real time.
Shunyuan Mao   +5 more
doaj   +1 more source

Gas- and dust evolution in protoplanetary disks [PDF]

open access: yes, 2010
Context. Current models of the size- and radial evolution of dust in protoplanetary disks generally oversimplify either the radial evolution of the disk (by focussing at one single radius or by using steady state disk models) or they assume particle ...
Birnstiel, T.   +2 more
core   +1 more source

Demographics of Protoplanetary Disks: A Simulated Population of Edge-on Systems

open access: yesThe Astrophysical Journal, 2023
The structure of protoplanetary disks plays an essential role in planet formation. A disk that is highly inclined, or “edge-on,” is of particular interest since its geometry provides a unique opportunity to study the disk’s vertical structure and radial ...
Isabel Angelo   +11 more
doaj   +1 more source

Planets opening dust gaps in gas disks [PDF]

open access: yes, 2004
We investigate the interaction of gas and dust in a protoplanetary disk in the presence of a massive planet using a new two-fluid hydrodynamics code. In view of future observations of planet-forming disks we focus on the condition for gap formation in ...
Bryden   +16 more
core   +3 more sources

Effect of dust grain porosity on the appearance of protoplanetary disks [PDF]

open access: yes, 2014
We theoretically analyze protoplanetary disks consisting of porous dust grains. In the analysis of observations of protoplanetary disks the dust phase is often assumed to consist of spherical grains, allowing one to apply the Mie scattering formalism ...
Kirchschlager, F., Wolf, S.
core   +1 more source

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