Journal ArticleDOI
In-situ Fe XANES of extraterrestrial grains trapped in aerogel collectors: An analytical test for the interpretation of Stardust samples analyses
Faustine Grossemy,J. Borg,Z. Djouadi,Alexandre Simionovici,Laurence Lemelle,D. Eichert,D. Deboffle,Andrew J. Westphal,Christopher J. Snead +8 more
TLDR
In this article, the effects of the slowing down of hypervelocity particles into aerogel on the physical and chemical properties of the collected grains were analyzed using Synchrotron X-ray Microscopy (SXRM).About:
This article is published in Planetary and Space Science.The article was published on 2007-05-01. It has received 12 citations till now. The article focuses on the topics: Hypervelocity.read more
Citations
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Grain Properties of Comet C/1995 O1 (Hale-Bopp) Deduced Through Computational Techniques
TL;DR: In this article, the authors present the computational analysis of the 7.6 - 13.2 micrometer infrared spectrophotometry (R approximately equal to 120) of comet C/1995 O1 (Hale-Bopp) in conjunction with concurrent observations which extend the spectral energy distribution from the near-infrared to farinfrared wavelengths.
Journal ArticleDOI
Laser mass spectrometric detection of extraterrestrial aromatic molecules: Mini-review and examination of pulsed heating effects
TL;DR: In this paper, the effect of heating caused by hypervelocity particle capture in aerogel, which was used on the NASA Stardust Mission to capture comet particles, was investigated.
Journal ArticleDOI
Iron oxides in comet 81P/Wild 2
John Bridges,Mark J. Burchell,Hitesh C. Changela,N. J. Foster,J. Alan Creighton,James Carpenter,S J Gurman,Ian A. Franchi,Henner Busemann,Henner Busemann +9 more
TL;DR: In this paper, the authors used synchrotron Fe-XANES, XRS, micro Raman, and SEM-TEM analyses of Stardust track 41 slice and track 121 terminal area slices to identify Fe oxide (magnetite-hematite and amorphous oxide).
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Extended X-ray Absorption Fine Structure (EXAFS) in Stardust tracks: Constraining the origin of ferric iron-bearing minerals
TL;DR: In this article, the authors used X-ray Absorption Fine Structure (EXAFS) techniques to identify fine-grained early Solar System materials from the Stardust data.
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Use of multivariate analysis for synchrotron micro-XANES analysis of iron valence state in amphiboles
M. Darby Dyar,E. A. Breves,Mickey E. Gunter,Antonio Lanzirotti,Jordan Tucker,CJ Carey,S. E. Peel,Elizabeth B. Brown,Roberta Oberti,Mirna Lerotic,Jeremy S. Delaney +10 more
TL;DR: In this article, a calibration suite developed by acquiring X-ray absorption near-edge spectroscopy (XANES) data from amphibole single crystals with the beam polarized along the major optical directions (X, Y, and Z) is employed.
References
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Journal ArticleDOI
Oxidation state and coordination of Fe in minerals: An Fe K-XANES spectroscopic study
Max Wilke,François Farges,François Farges,Pierre-Emmanuel Petit,Gordon E. Brown,François Martin +5 more
TL;DR: In this paper, the authors measured high-resolution Fe K-edge XANES spectra of a series of crystalline Fe 2+ - and Fe 3+ -bearing model compounds in an effort to correlate characteristics of the pre-edge feature with oxidation state and local coordination environment of Fe atoms.
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Toward an Astrophysical Theory of Chondrites
TL;DR: The chondrules, calcium-aluminum-rich inclusions (CAIs), and rims in chondritic meteorites could be formed when solid bodies are lifted by the aerodynamic drag of a magnetocentrifugally driven wind out of the relative cool of a shaded disk close to the star into the heat of direct sunlight.
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The absence of crystalline silicates in the diffuse interstellar medium
TL;DR: In this paper, the spectral properties of the spectrum from 8 to 13 μm of the Wolf-Rayet stars were analyzed and the authors determined an upper limit to the degree of crystallinity of silicates in the diffuse interstellar medium (ISM) and concluded that the crystalline fraction of the interstellar silicates is 0.2% ± 0.1% by mass.
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The Spectrum of Comet Hale-Bopp (C/1995 O1) Observed with the Infrared Space Observatory at 2.9 Astronomical Units from the Sun
Jacques Crovisier,K. Leech,Dominique Bockelée-Morvan,T. Y. Brooke,Martha S. Hanner,Bruno Altieri,H. U. Keller,Emmanuel Lellouch +7 more
TL;DR: Several broad emission features observed in the 7- to 45-micrometer region suggest the presence of silicates, particularly magnesium-rich crystalline olivine, similar to those observed inThe dust envelopes of Vega-type stars.
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Cosmic Dust: Collection and Research
TL;DR: Cosmic dust as discussed by the authors is defined as "particle material that exists or has existed in the interplanetary medium as bodies smaller than 1 mm and can be collected both in space and in the terrestrial environment, and they are a valuable resource of meteoritic material.
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Hypervelocity capture of meteoritic particles in nonsilica aerogels
Steven Jones,George J. Flynn +1 more