Results 221 to 230 of about 18,385 (263)
Direct imaging of planetary mass companions and circumstellar debris disks
, 2018 Elisabeth C. Matthews
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Gas-Phase Production of Hydroxylated Silicon Oxide Cluster Cations: Structure, Infrared Spectroscopy, and Astronomical Relevance. [PDF]
ACS Earth Space Chemde Donato AA +5 more
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Gravitational Instabilities in Circumstellar Disks [PDF]
Annual Review of Astronomy and Astrophysics, 2016 Star and planet formation are the complex outcomes of gravitational collapse and angular momentum transport mediated by protostellar and protoplanetary disks. In this review, we focus on the role of gravitational instability in this process. We begin with a brief overview of the observational evidence for massive disks that might be subject to ...
Kaitlin M Kratter, Giuseppe Lodato
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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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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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