Results 201 to 210 of about 2,119 (235)

Circumstellar and circumplanetary disks

2000
This thesis studies disks in three astrophysical contexts: (1) protoplanetary disks; (2) the Edgeworth-Kuiper Belt; and (3) planetary rings. We derive hydrostatic, radiative equilibrium models of passive protoplanetary disks surrounding T Tauri and Herbig Ae/Be stars. Each disk is encased by an optically thin layer of superheated dust grains.
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Molecular Evolution in Planet-Forming Circumstellar Disks

Faraday Discussions, 1998
We have investigated the evolution of molecular abundance in circumstellar disks around young low-mass stars, which are considered to be the formation sites of planetary systems. Adopting the standard accretion disk model, we investigated molecular evolution mainly in the accretion phase.
Y. Aikawa, T. Umebayashi, T. Nakano, S. Miyama   +3 more
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Observations of Circumstellar Disks

2007
IRAS observations first showed that a sizable fraction of the nearby stars are (still) surrounded by dust disks (Cheng et al. [3]), the most prominent prototypes of this class of dusty stars being Vega, β Pic, and α PsA. Such dust or debris disks have generated particular interest in the framework of young earth-like planetary systems.
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Circumstellar disks

EAS Publications Series, 2014
A. Meilland, Ph. Stee
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Circumstellar Disks with VLT/VLTI

1995
Disk research in the era of the VLT will profit from the high angular resolution and high dynamic range made available from interferometry, adaptive optics and the sensitivity made possible by large collecting areas. Significant advances are likely to come from the unique aspects of the VLT: the VLT interferometer (VLTI) and thermal infrared ...
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Physical processes in circumstellar disks

1996
We review the basic physical processes which occur incircumstellar disks. We discuss the possible role of gravitational instabilities in producing both disk accretion and secondary bodies within the disk. Next, we consider the viscous evolution of disks and the possible sources of the viscosity. We briefly consider magnetic instabilities tidal effects,
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Circumstellar Disk

2023
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Deuterium-enriched water ties planet-forming disks to comets and protostars

Nature, 2023
John J Tobin, Ewine van Dishoeck, Teresa Paneque   +2 more
exaly  

Prebiotic Astrochemistry and the Formation of Molecules of Astrobiological Interest in Interstellar Clouds and Protostellar Disks

Chemical Reviews, 2020
Scott A Sandford, Michel Nuevo, Partha P Bera   +2 more
exaly  

Artificial neural networking (ANN) analysis for heat and entropy generation in flow of non‐Newtonian fluid between two rotating disks

Mathematical Methods in the Applied Sciences, 2023
Tie-Hong Zhao, Muhammad Ijaz Khan, Yu-Ming Chu   +2 more
exaly