Results 71 to 80 of about 77,803 (191)
Probing Dust and Gas Properties Using Ringed Disks
The Astrophysical Journal LettersHow rapidly a planet grows in mass and how far it may park from the host star depend sensitively on two nondimensional parameters: Stokes number St and turbulent α .
Eve J. Lee
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Particle emissivity in circumstellar disks
The Astrophysical Journal, 1991 Submillimeter continuum observations of 29 pre-main-sequence objects in Taurus and Orion are used to study the wavelength dependence of particle emission. These objects are mostly T Tauri stars whose long-wavelength emission is thought to originate in circumstellar disks.
Steven V. W. Beckwith +1 more
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Eccentric Disks with Self-gravity
The Astronomical JournalCan a disk orbiting a central body be eccentric, when the disk feels its own self-gravity and is pressureless? Contradictory answers appear in the literature. We show that, to linear order in eccentricity, such a disk can be eccentric, but only if it has
Yoram Lithwick +3 more
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Heating and cooling processes in disks [PDF]
, 2015 The research leading to these results has received funding from the European Union Seventh Framework Programme FP7-2011 under grant agreement no 284405.
Peter Woitke +2 more
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Imaging circumstellar disks around young stars by multi-aperture interferometry.
, 1992 International audienceTheoretical models of star formation predict the existence of a circumstellar disk around young stellar objects. In this paper, the authors present synthetic images of circumstellar accretion disks, computed from a model where the ...
Malbet, F., Bouvier, J., Monin, J. -L.
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The Astronomical JournalOne of the scenarios used to explain the dipper phenomenon in stars is having the innermost disk regions being close to the line of sight to the star—inclined greater than 60°—regardless of the inclination of the outermost disk (“misaligned” or “broken ...
Michael L. Sitko +4 more
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Deep Search for a Scattered Light Dust Halo Around Vega with the Hubble Space Telescope
The Astronomical JournalWe present a provisory scattered-light detection of the Vega debris disk using deep Hubble Space Telescope (HST) coronagraphy (PID 16666). At only 7.7 pc, Vega is immensely important in debris disk studies both for its prominence and also because it ...
Schuyler G. Wolff +8 more
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SpS1-Circumstellar disks & their evolution: Dust
, 2009 Circumstellar disks are an intrinsic part of star formation and are also where planets form, migrate, and where the materials capable of producing life-bearing worlds are produced.
Carol A. Grady
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The Astrophysical Journal(Sub)millimeter dust polarization in protoplanetary disks has revealed the presence of large (∼100 μ m) dust grains that are aligned along their long axis following the azimuthal direction of the disk.
Zhe-Yu Daniel Lin +10 more
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Circumstellar Disks in the Orion Nebula Cluster [PDF]
, 1998 We combine our previous optical spectroscopic and photometric analysis of ~1600 stars located in the Orion Nebula Cluster (ONC) with our own and published near-infrared photometric surveys of the region in order to investigate the evidence for and ...
Gatley, Ian +7 more
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