Results 41 to 50 of about 398,118 (263)

Transport of CO in Protoplanetary Disks: Consequences of Pebble Formation, Settling, and Radial Drift [PDF]

open access: yesAstrophysical Journal, 2018
Current models of (exo)planet formation often rely on a large influx of so-called “pebbles” from the outer disk into the planet formation region.
S. Krijt   +3 more
semanticscholar   +1 more source

Ionization and heating by X-rays and cosmic rays*

open access: yesEPJ Web of Conferences, 2015
High-energy radiation from the central T Tauri and protostars plays an important role in shaping protoplanetary disks and influences their evolution. Such radiation, in particular X-rays and extreme-ultraviolet (EUV) radiation, is predominantly generated
Güdel Manuel
doaj   +1 more source

Three-dimensional, Time-dependent MHD Simulation of Disk–Magnetosphere–Stellar Wind Interaction in a T Tauri, Protoplanetary System

open access: yesThe Astrophysical Journal, 2023
We present a three-dimensional, time-dependent MHD simulation of the short-term interaction between a protoplanetary disk and the stellar corona in a T Tauri system.
Ofer Cohen   +6 more
doaj   +1 more source

The Disk Substructures at High Angular Resolution Project (DSHARP). V. Interpreting ALMA Maps of Protoplanetary Disks in Terms of a Dust Model [PDF]

open access: yesAstrophysical Journal, 2018
The Disk Substructures at High Angular Resolution Project (DSHARP) is the largest homogeneous high-resolution (∼0.″035, or ∼5 au) disk continuum imaging survey with the Atacama Large Millimeter/submillimeter Array (ALMA) so far. In the coming years, many
T. Birnstiel   +11 more
semanticscholar   +1 more source

Formation of giant planets around stars with various masses [PDF]

open access: yes, 2006
We examine the predictions of the core accretion - gas capture model concerning the efficiency of planet formation around stars with various masses. First, we follow the evolution of gas and solids from the moment when all solids are in the form of small
Bodenheimer   +32 more
core   +2 more sources

A Survey of C2H, HCN, and C18O in Protoplanetary Disks [PDF]

open access: yesAstrophysical Journal, 2019
Molecular lines observed toward protoplanetary disks carry information about physical and chemical processes associated with planet formation. We present ALMA Band 6 observations of C2H, HCN, and C18O in a sample of 14 disks spanning a range of ages ...
J. Bergner   +5 more
semanticscholar   +1 more source

Including Dust Coagulation in Hydrodynamic Models of Protoplanetary Disks: Dust Evolution in the Vicinity of a Jupiter-mass Planet [PDF]

open access: yesAstrophysical Journal, 2019
Dust growth is often neglected when building models of protoplanetary disks due to its complexity and computational expense. However, it does play a major role in shaping the evolution of protoplanetary dust and planet formation.
J. Dra̧żkowska   +4 more
semanticscholar   +1 more source

PAHs in protoplanetary disks: emission and X-ray destruction [PDF]

open access: yes, 2012
We study the PAH emission from protoplanetary disks. First, we discuss the dependence of the PAH band ratios on the hardness of the absorbed photons and the temperature of the stars.
Acke   +60 more
core   +1 more source

Probing CO and N2 Snow Surfaces in Protoplanetary Disks with N2H+ Emission [PDF]

open access: yesAstrophysical Journal, 2019
Snowlines of major volatiles regulate the gas and solid C/N/O ratios in the planet-forming midplanes of protoplanetary disks. Snow surfaces are the 2D extensions of snowlines in the outer disk regions, where radiative heating results in an increasing ...
C. Qi   +8 more
semanticscholar   +1 more source

Centimeter-sized Grains in the Compact Dust Ring around Very-low-mass Star CIDA 1

open access: yesThe Astronomical Journal, 2023
We examined the grain size in the dust ring encircling the 0.19 M _☉ T Tauri star CIDA 1 using the Karl G. Jansky Very Large Array at multiple centimeter wavelengths, with a spatial resolution of 0.″2–0.″9. We detected distinct partial-ring structures at
Jun Hashimoto   +5 more
doaj   +1 more source

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