Results 251 to 260 of about 418,445 (289)
Interstellar dust models for extinction and emission
Desert, F.-X. +2 more
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Global Dust Extinction and Occurrence Data
Seasonal global dust extinction and ...
Kang Yang, Zhien Wang, Tao Luo
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Process Safety Progress, 2000
Abstract Two basic phenomenological models for deflagration propagation in dust clouds are discussed as the basis for interpreting explosion suppression results. The first model is based on oxygen diffusion to fuel dust particles as the controlling step in explosion propagation through a dust cloud.
Kris Chatrathi, John Going
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Abstract Two basic phenomenological models for deflagration propagation in dust clouds are discussed as the basis for interpreting explosion suppression results. The first model is based on oxygen diffusion to fuel dust particles as the controlling step in explosion propagation through a dust cloud.
Kris Chatrathi, John Going
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Interstellar Dust and Extinction
Annual Review of Astronomy and Astrophysics, 1987The ultraviolet (UV) region of the spectrum has been crucial in providing information on the nature of the material and size distribution of the particles of interstellar dust. Before there were any measurements of the UV properties of interstellar extinction, interstellar particles were believed to be composed primarily of dirty ices.
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Applied Optics, 2003
Results on the monitoring of strong African dust outbreaks at Lecce in the southeastern corner of Italy (40 degrees 20' N, 18 degrees 6' E) during May 2001 are presented. This activity has been performed in the framework of the European Aerosol Research Lidar Network (EARLINET).
DE TOMASI, Ferdinando +2 more
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Results on the monitoring of strong African dust outbreaks at Lecce in the southeastern corner of Italy (40 degrees 20' N, 18 degrees 6' E) during May 2001 are presented. This activity has been performed in the framework of the European Aerosol Research Lidar Network (EARLINET).
DE TOMASI, Ferdinando +2 more
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Dust extinction from Paschen-Balmer lines
1996We have studied the dust extinction of spiral galaxies by determing the attenuation of the emission from giant extragalactic H II regions. The aim is to push CCD observations as far into the near-IR as possible to compare the near-IR Paschen lines with blue Baimer lines separated by a wide wavelength interval including the corresponding multiplet lines
Petersen, L. +2 more
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Analysis of dust through extinction
Astrophysics and Space Science, 1992Extinction is treated through the optical thickness τ. Some important characters of dust, such as the composition and the size of grains, are reviewed in the light of observational evidence. Extinction is investigated through three kind of parameters: (1) those affecting it directly such as the geometrical cross sections of the grains (through the ...
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Mapping Dust Extinction in Molecular Clouds
1997Infrared array cameras have enabled the measurement and mapping of dust extinction within molecular clouds to significantly greater optical depths and at significantly higher angular resolution than previously possible. In this paper we present a map of the dust extinction in the dark cloud L978 in Cygnus derived from a large-scale multi-wavelength ...
João Alves, Charles J. Lada
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Mapping Dust Extinction with IR Cameras
1994In this paper we describe a powerful method for using data obtained in large scale, multi-wavelength, infrared imaging surveys to directly measure and map the distribution of extinction through a molecular cloud. This method combines measurements of near-infrared color excess and certain techniques of star counting to derive mean extinctions through a ...
Charles J. Lada +3 more
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