منابع مشابه
Dust cloud formation in stellar environments II. Two-dimensional models for structure formation around AGB stars
This paper reports on computational evidence for the formation of cloud-like dust structures around C-rich AGB stars. This spatio-temporal structure formation process is caused by a radiative/thermal instability of dust forming gases as identified by Woitke et al. (2000). Our 2D (axisymmetric) models combine a time-dependent description of the dust formation process according to Gail & Sedlmayr...
متن کاملDust to Dust : Evidence for Planet Formation ?
We discuss the properties of several circumstellar debris disk systems imaged with the Hubble Space Telescope’s Near Infrared Camera and Multi-Object Spectrometer in a survey of young stars with known far-IR excesses. These dusty disks around young (∼ 5–8 Myr) unembedded stars exhibit morphological anisotropies and other characteristics which are suggestive of recent or on-going planet formatio...
متن کاملFormation of Three-Dimensional Black Strings from Gravitational Collapse of Dust Cloud
We study the formation of black strings from a gravitational collapse of cylindrical dust clouds in the three-dimensional low-energy string theory. A new junction condition for the dilaton as well as two junction conditions for metrics and extrinsic curvatures between both regions of the clouds is presented. As a consequence, it is found that the collapsing dust cloud always collapses to a blac...
متن کاملLaboratory investigations of the impact of mineral dust aerosol on cold cloud formation
Dust particles represent a dominant source of particulate matter (by mass) to the atmosphere, and their emission from some source regions has been shown to be transported on regional and hemispherical scales. Dust particles’ potential to interact with water vapor in the atmosphere can lead to important radiative impacts on the climate system, both direct and indirect. We have investigated this ...
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ژورنال
عنوان ژورنال: Measurement and Control
سال: 2009
ISSN: 0020-2940
DOI: 10.1177/002029400904200304