Results 141 to 150 of about 71,588 (268)

Asymmetric Temperature Variations In Protoplanetary Disks. I. Linear Theory, Corotating Spirals, and Ring Formation

open access: yesThe Astrophysical Journal
Protoplanetary disks can exhibit asymmetric temperature variations due to phenomena such as shadows cast by the inner disk or localized heating by young planets. We investigate the disk features induced by these asymmetric temperature variations. We find
Zhaohuan Zhu   +2 more
doaj   +1 more source

Gap Formation in the Dust Layer of 3D Protoplanetary Disks

open access: yes, 2007
We numerically model the evolution of dust in a protoplanetary disk using a two-phase (gas+dust) Smoothed Particle Hydrodynamics (SPH) code, which is non-self-gravitating and locally isothermal. The code follows the three dimensional distribution of dust
A. Crida   +21 more
core   +2 more sources

Planetesimal formation by the streaming instability in a photoevaporating disk

open access: yes, 2017
Recent years have seen growing interest in the streaming instability as a candidate mechanism to produce planetesimals. However, these investigations have been limited to small-scale simulations. We now present the results of a global protoplanetary disk
Carrera, Daniel   +3 more
core   +1 more source

Insight into the Formation of β Pic b through the Composition of Its Parent Protoplanetary Disk as Revealed by the β Pic Moving Group Member HD 181327

open access: yesThe Astronomical Journal
It has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio. Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet’s parent protoplanetary disk, β Pic b’s C/O ratio suggests that it formed via ...
Henrique Reggiani   +7 more
doaj   +1 more source

Fully compressible simulations of the baroclinic instability in protoplanetary disks

open access: yesEPJ Web of Conferences, 2013
The occurrence of the baroclinic instability in protoplanetary disks is investigated using fully compressible numerical simulations. We study the role of disk stratification and heat transfer in the development of the instability. Vortices are found to
Barge Pierre, Richard Samuel
doaj   +1 more source

Debris Disks: Probing Planet Formation

open access: yes, 2018
Debris disks are the dust disks found around ~20% of nearby main sequence stars in far-IR surveys. They can be considered as descendants of protoplanetary disks or components of planetary systems, providing valuable information on circumstellar disk ...
A Bonsor   +131 more
core   +1 more source

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