Cometary dust
AC Levasseur-Regourd, J Agarwal, H Cottin… - Space science …, 2018 - Springer
This review presents our understanding of cometary dust at the end of 2017. For decades,
insight about the dust ejected by nuclei of comets had stemmed from remote observations …
insight about the dust ejected by nuclei of comets had stemmed from remote observations …
Widespread oxidized and hydrated amorphous silicates in CR chondrites matrices: Implications for alteration conditions and H2 degassing of asteroids
The CR chondrites carry one of the most pristine records of the solar nebula materials that
accreted to form planetesimals. They have experienced very variable degrees of aqueous …
accreted to form planetesimals. They have experienced very variable degrees of aqueous …
Evidence for aqueous activity on comet 81P/Wild 2 from sulfide mineral assemblages in Stardust samples and CI chondrites
The discovery of nickel-, copper-, and zinc-bearing iron sulfides from comet 81P/Wild 2 (Wild
2) represents the strongest evidence, in the Stardust collection, of grains that formed in an …
2) represents the strongest evidence, in the Stardust collection, of grains that formed in an …
A hidden reservoir of Fe/FeS in interstellar silicates?
M Köhler, A Jones, N Ysard - Astronomy & Astrophysics, 2014 - aanda.org
Context. The depletion of iron and sulphur into dust in the interstellar medium and the exact
nature of interstellar amorphous silicate grains is still an open question. Aims. We study the …
nature of interstellar amorphous silicate grains is still an open question. Aims. We study the …
Redox variations in the inner solar system with new constraints from vanadium XANES in spinels
K Righter, SR Sutton, L Danielson, K Pando… - American …, 2016 - degruyter.com
Many igneous rocks contain mineral assemblages that are not appropriate for application of
common mineral equilibria or oxybarometers to estimate oxygen fugacity. Spinel-structured …
common mineral equilibria or oxybarometers to estimate oxygen fugacity. Spinel-structured …
Connection between micrometeorites and Wild 2 particles: From Antarctic snow to cometary ices
We discuss the relationship between large cosmic dust that represents the main source of
extraterrestrial matter presently accreted by the Earth and samples from comet 81P/Wild 2 …
extraterrestrial matter presently accreted by the Earth and samples from comet 81P/Wild 2 …
Correlated microanalysis of cometary organic grains returned by Stardust
Carbonaceous matter in Stardust samples returned from comet 81P/Wild 2 is observed to
contain a wide variety of organic functional chemistry. However, some of this chemical …
contain a wide variety of organic functional chemistry. However, some of this chemical …
Mineralogy and petrology of Stardust particles encased in the bulb of track 80: TEM investigation of the Wild 2 fine-grained material
J Stodolna, D Jacob, H Leroux - Geochimica et Cosmochimica Acta, 2012 - Elsevier
We have characterized by transmission electron microscopy the mineralogy of samples
extracted from the walls of the Stardust track 80. More than 500 fragments were studied …
extracted from the walls of the Stardust track 80. More than 500 fragments were studied …
How laboratory hypervelocity impact experiments have helped us to understand comet dust samples: a brief review.
AT Kearsley - Procedia engineering, 2017 - Elsevier
In the last two decades, experimental hypervelocity impacts (HVI) using light gas gun (LGG)
shots have answered numerous questions about how comet dust can be captured, and have …
shots have answered numerous questions about how comet dust can be captured, and have …
Extended X-ray Absorption Fine Structure (EXAFS) in Stardust tracks: Constraining the origin of ferric iron-bearing minerals
HG Changela, JC Bridges, SJ Gurman - Geochimica et Cosmochimica Acta, 2012 - Elsevier
Abstract X-ray Absorption Fine Structure techniques have been used on Comet Wild2/81P
tracks from the Stardust mission. Fe-XANES and EXAFS have been performed on aerogel …
tracks from the Stardust mission. Fe-XANES and EXAFS have been performed on aerogel …