Results 21 to 30 of about 144 (137)

Intense aqueous alteration on C-type asteroids: Perspectives from giant fine-grained micrometeorites [PDF]

open access: yesGeochimica et Cosmochimica Acta, 2019
Abstract This study explores the petrology of five giant (>400 μm) hydrated fine-grained micrometeorites from the Transantarctic Mountain (TAM) micrometeorite collection. For the first time, the extent and mechanisms of aqueous alteration in unmelted cosmic dust are evaluated and quantified.
M.D. Suttle   +5 more
openaire   +2 more sources

Grain Size Effects on UV–MIR (0.2–14 μm) Spectra of Carbonaceous Chondrite Groups

open access: yesThe Planetary Science Journal, 2023
Carbonaceous chondrites are among the most important meteorite types and have played a vital role in deciphering the origin and evolution of our solar system.
David C. Cantillo   +9 more
doaj   +1 more source

Detection of the Yarkovsky effect for C-type asteroids in the Veritas family [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
20 pages, 19 figures, 1 table.
Carruba, V.   +2 more
openaire   +4 more sources

JBILET WINSELWAN; A STEP TOWARD UNDERSTANDING THE COMPOSITION OF C-TYPE ASTEROIDS [PDF]

open access: yesGeological Society of America Abstracts with Programs, 2016
AbstractJbilet Winselwan is one of the largest CM carbonaceous chondrites available for study. Its light, major, and trace elemental compositions are within the range of other CM chondrites. Chondrules are surrounded by dusty rims and set within a matrix of phyllosilicates, oxides, and sulfides.
Michael J. Cato, Amy L. Fagan
openaire   +4 more sources

Taxonomic Classification of Asteroids Using the KMTNet Multiband Photometry Data Set

open access: yesThe Planetary Science Journal, 2023
We report the multiband photometry of asteroids observed over 14 nights from 2015 December to 2017 December using the Korea Microlensing Telescope Network telescopes with the taxonomic classification of those objects. The data set contains the photometry
Sangho Choi   +5 more
doaj   +1 more source

Optimization of Future Multifilter Surveys Toward Asteroid Characterization

open access: yesThe Astronomical Journal, 2023
The aim of this paper is to find a set of photometric passbands that will give optimal results for spectrophotometric classification of asteroids into taxonomic types and classes.
Hanna Klimczak   +6 more
doaj   +1 more source

Characteristics and large bulk density of the C-type main-belt triple asteroid (93) Minerva [PDF]

open access: yesIcarus, 2013
From a set of adaptive optics (AO) observations collected with the W.M. Keck telescope between August and September 2009, we derived the orbital parameters of the most recently discovered satellites of the large C-type asteroid (93) Minerva. The satellites of Minerva, which are approximately 3 and 4 km in diameter, orbit very close to the primary $\sim$
Marchis, F.   +13 more
openaire   +5 more sources

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

Carbon Speciation and Solubility in Silicate Melts

open access: yesGeophysical Monograph Series, Page 179-194., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova   +2 more
wiley  

+2 more sources

Low thermal conductivity boulder with high porosity identified on C-type asteroid (162173) Ryugu [PDF]

open access: yesNature Astronomy, 2019
C-type asteroids are among the most pristine objects in the Solar System, but little is known about their interior structure and surface properties. Telescopic thermal infrared observations have so far been interpreted in terms of a regolith-covered surface with low thermal conductivity and particle sizes in the centimetre range.
Grott, Matthias   +36 more
openaire   +3 more sources

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