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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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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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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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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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Circumstellar disks in the Trapezium Cluster
1996We discuss the recent discovery and study of circumstellar disks in the Trapezium Cluster via two techniques. First we discuss the population of objects sometimes called ‘proplyds’, as revealed by ionizing radiation from the central massive OB stars of the Trapezium, and the fraction of these ionized objects that are associated with stars.
Mark McCaughrean +3 more
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Observations of circumstellar disks and infall
AIP Conference Proceedings, 1997This paper presents an overview of the current status of millimeter and submillimeter wavelength observations of circumstellar disk and infall associated with young stars. Particular attention is paid to the progress and promise of high resolution interferometer observations.
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Physical processes in circumstellar disks
1996We 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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