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The composition of circumstellar and interstellar dust
, 2001 A large number of solid dust components have been identified through analysis of stardust recovered from meteorites, and analysis of IR observations of circumstellar shells and the interstellar medium. These include graphite, hydrogenated amorphous carbon, diamond, PAHs, silicon-, iron-, and titaninium-carbide, silicon nitride, magnesium sulfide ...
Tielens, AGGM
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Circumstellar dust shells of hot post-AGB stars
Astronomy and Astrophysics, 2004 Parameters of the circumstellar dust shells of 15 hot post-AGB stars have been derived using a radiative transfer code (DUSTY). Combining the optical, near and far-infrared (ISO, IRAS) data of the stars, we have reconstructed their spectral energy ...
M Parthasarathy
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Molecules and dust in circumstellar shells
Astrophysics and Space Science, 1995Circumstellar shells provide a unique environment for the study of dust formation and the relation of dust composition to specific atomic and molecular components. As a specific example, the formation of carbonaceous dust is discussed in relation to the presence of polycyclic aromatic hydrocarbon molecules and their survival in the interstellar medium.
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Mineralogy of Circumstellar Dust
2007The composition and spatial distribution of circumstellar dust in young and old stars can be used as a probe of the physical and chemical processes that take place. Such studies require a modest spectral resolution in combination with high spatial resolution and large collecting area, now for the first time provided by the new generation of optical ...
L.B.F.M. Waters, Ch. Leinert
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Dust in turbulent circumstellar discs
Astrophysics and Space Science, 1993The ‘collisional model’ for turbulent discs (Hameen-Anttila, 1991) is shown to be equivalent to the α model if the same coefficient of viscosity is adopted in both cases and if an unknown numerical coefficient in the former model is chosen appropriately.
M. Verronen +2 more
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Submillimeter observations of circumstellar dust
Publications of the Astronomical Society of the Pacific, 1992Five late-type stars with circumstellar envelopes were observed with the James Clark Maxwell Telescope (JCMT) on 1988 Feb. 7-8. The stars IK Tau, Alpha Ori, VY CMa, CW Leo and RW LMi were observed in the 450, 800 and 1100 micron wavebands. These data were combined with existing measurements at shorter wavelengths for each star.
Caroline R. Marshall +2 more
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TEM studies of circumstellar dust
Proceedings, annual meeting, Electron Microscopy Society of America, 1992In recent years the development of special chemical separation techniques has permitted the isolation of material from primitive meteorites that can be unambiguously identified as pre-solar grains-that is, solids that condensed in the atmospheres of ancient stars and later became incorporated into the cloud of gas and dust which gave rise to our solar ...
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Infrared Interferometry and Circumstellar Dust
AIP Conference Proceedings, 2009Exozodiacal dust plays an important role for the feasibility and dimensioning of future space missions dedicated to the spectroscopic analysis of the atmosphere of Earth‐like planets. Thus, a survey of dust clouds around potential targets is called for in order to reduce the need for such observations using space‐based missions and not waste time on ...
Vincent Coudé du Foresto +3 more
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Interstellar Dust and Circumstellar Dust Disks
2001Interstellar dust research belongs to the young branches of astrophysics. With the establishment of sensitive observational techniques in the astronomical infrared spectroscopy in the 1960s, diagnostic circumstellar and interstellar dust bands were detected and induced an explosive development of the whole field.
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