Results 91 to 100 of about 14,221 (195)

Large Fluctuations within 1 au in Protoplanetary Disks

open access: yesThe Astrophysical Journal
Protoplanetary disks are often assumed to change slowly and smoothly during planet formation. Here, we investigate the time evolution of isolated disks subject to viscosity and a disk wind. The viscosity is assumed to increase rapidly at around 900 K due
John Chambers
doaj   +1 more source

JWST Imaging of Edge-on Protoplanetary Disks. III. Drastic Morphological Transformation Across the Mid-infrared in Oph163131

open access: yesThe Astrophysical Journal
We present JWST broadband images of the highly inclined protoplanetary disk SSTc2d J163131.2-242627 (Oph163131) from 2.0 to 21 μ m. The images show a remarkable evolution in disk structure with wavelength, quite different from previous JWST observations ...
Marion Villenave   +8 more
doaj   +1 more source

Modeling the Impact of Moderate External UV Irradiation on Disk Chemistry

open access: yesThe Astrophysical Journal
The chemistry within a protoplanetary disk is greatly affected by external radiation from the local stellar environment. Previous work has focused on extreme radiation fields, representative of the center of something like the Orion Nebula Cluster ...
Rachel E. Gross, L. Ilsedore Cleeves
doaj   +1 more source

A numerical turbulence model for multiphase flows in the protoplanetary nebula [PDF]

open access: green, 1995
Joëlle M. Champney   +2 more
openalex   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

open access: yes
Meteoritics &Planetary Science, Volume 59, Issue S1, Page i-xlii, August 2024.
wiley   +2 more sources

Multi-Observatory Research of Young Stellar Energetic Flares (MORYSEF): X-Ray-flare-related Phenomena and Multi-epoch Behavior

open access: yesThe Astrophysical Journal
The most powerful stellar flares driven by magnetic energy occur during the early pre-main-sequence (PMS) phase. The Orion Nebula represents the nearest region populated by young stars, showing the greatest number of flares accessible to a single ...
Konstantin V. Getman   +10 more
doaj   +1 more source

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