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Observations of Circumstellar Disks
Astrophysics and Space Science, 2004This review presents recent results on protoplanetary disks obtained from angularly resolved observations. Observations with mm arrays show that disks are in Keplerian rotation, with radius as large as 1000 AU. Optical images show disks to be flared.
Anne Dutrey, Stéphane Guilloteau
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A Circumstellar Disk Around β Pictoris
Science, 1984A circumstellar disk has been observed optically around the fourth-magnitude star β Pictoris. First detected in the infrared by the Infrared Astronomy Satellite last year, the disk is seen to extend to more than 400 astronomical units from the star, or more than twice the distance measured in the infrared by the Infrared Astronomy Satellite.
B A, Smith, R J, Terrile
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Annual Review of Astronomy and Astrophysics, 2001
▪ Abstract Dusty circumstellar disks in orbit around main-sequence stars were discovered in 1983 by the infrared astronomical satellite. It was the first time material that was not another star had been seen in orbit around a main-sequence star other than our Sun.
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▪ Abstract Dusty circumstellar disks in orbit around main-sequence stars were discovered in 1983 by the infrared astronomical satellite. It was the first time material that was not another star had been seen in orbit around a main-sequence star other than our Sun.
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Ripping up a circumstellar disk
Science, 2020Stellar Astrophysics During the process of star formation, a disk of gas and dust forms around the young star, controlling the accretion of more material. Once the star has formed, any leftover material in this circumstellar disk can form planets. If a binary or triple star forms at the center of the disk, theoretical models predict that tidal torques ...
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Circumstellar disks and planetary formation
The Moon and the Planets, 1978The role of circumstellar disks in star and planetary formation is briefly reviewed. The observed disk around MWC 349 is used as an example and a table of evolutionary time scales and parameters is presented. The disk about MWC 349 is characteristic of that expected about a massive star. Disk structure about solar mass stars is more completely reviewed
Rodger I. Thompson +1 more
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Circumstellar and circumplanetary disks
2000This 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, 1998We 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 +3 more
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Observations of Circumstellar Disks
2007IRAS 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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