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Microdiamonds and the Ultraviolet Extinction of Starlight
Astrophysics and Space Science, 1998Nanometre-sized microdiamonds of the type recently discovered in meteorites could make up a significant fraction of interstellar carbon, and thus explain the observed excess of interstellar extinction at ultraviolet wavelengths.
N.C. Wickramasinghe, F. Hoyle
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Mid Infrared Excess and Ultraviolet Extinction
1987Correlations between the mid infrared excess and the UV extinction parameters are investigated, using a sample of 50 stars reported to have peculiar extinction properties. No correlation is found between the mid infrared excess and the 2175 A extinction bump, suggesting that the carriers of the UV bump and the mid infrared emission are different.
COX, P, LEENE, A
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The role of the charge state of PAHs in ultraviolet extinction [PDF]
Astronomy and Astrophysics, 2008 Aims: We explore the relation between charge state of polycyclic aromatic hydrocarbons (PAHs) and extinction curve morphology. Methods: We fit extinction curves with a dust model including core-mantle spherical particles of mixed chemical composition (silicate core, $sp^2$ and $sp^3$ carbonaceous layers), and an additional molecular component.
Cesare Cecchi-Pestellini +2 more
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Biochemical chromophores and the interstellar extinction at ultraviolet wavelengths
Astrophysics and Space Science, 1979Interstellar absorption observations at ultraviolet wavelengths are explained on the basis of chromophores in microbiological systems.
Chandra Wickramasinghe, Fred Hoyle
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The relationship between infrared, optical, and ultraviolet extinction
Astrophysical Journal, 1989 The parameterized extinction data of Fitzpatrick and Massa (1986, 1988) for the ultraviolet and various sources for the optical and near-infrared are used to derive a meaningful average extinction law over the 3.5 micron to 0.125 wavelength range which is applicable to both diffuse and dense regions of the interstellar medium.
Geoffrey Clayton
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Ultraviolet Extinction as a Key to Grain Optical Properties in the Infrared and Ultraviolet
1986The paper summarizes the results of a large study of UV extinction based on IUE spectra. The analysis of variations in UV extinction between individual lines of sight is used to separate the contributions of individual grain populations and to constrain their properties.
G. Chlewicki, J. Mayo Greenberg
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Investigation of the Ultraviolet Interstellar Extinction Curve
Publications of the Astronomical Society of the Pacific, 2001The effect of the interstellar medium (ISM) on ultraviolet radiation is striking; there is a prominent extinction feature (a “bump”) near 2175 A (4.6 mm ). Since its discovery, the carrier of this feature has been linked to graphite dust grains. However, a study of several Galactic lines of sight using International Ultraviolet Explorer (IUE) data (E ...
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Ultraviolet extinction measurements of molecular oxygen density
Journal of Geophysical Research: Space Physics, 1978Observations of the atmospheric extinction of solar ultraviolet radiation in the 142‐ to 149‐nm and 155‐ to 168‐nm bands have been used to determine molecular oxygen densities over the 100‐ to 160‐km altitude range in a series of rocket flights from Woomera, Australia (31°S, 136.5°E). Comparison of data from morning and evening flights made on the same
J. H. Carver +3 more
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FUSE Far Ultraviolet Dust Extinction Curves
AIP Conference Proceedings, 2009Far‐ultraviolet dust extinction curves for 75 sightlines have been created using Far‐Ultraviolet Spectroscopic Explorer (FUSE) observations. This represents the largest sample of far‐UV extinction curves ever measured. The FUSE archive was searched for all observations of stars with existing good IUE or STIS ultraviolet extinction curves.
Karl D. Gordon +6 more
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Influence of rotational darkening on ultraviolet interstellar extinction
Astronomische Nachrichten, 1989AbstractThe influence of rotational darkening on ultraviolet stellar fluxes of fast rotating stars has been rediscussed. For this aim ANS filter‐photometric magnitudes of weakly reddened B stars (E(B ‐ V) 0.1 mag) were corrected for interstellar extinction.
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