Results 51 to 60 of about 486 (136)

Spectral Effects of Shock Darkening on Ordinary Chondrite and Howardite, Eucrite, and Diogenite Meteorites

open access: yesThe Planetary Science Journal
Impacts are the most ubiquitous processes on planetary bodies in our solar system. During these impact events, shock waves can deposit enough energy to produce shock-induced darkening in the target material, resulting in an alteration of its spectral ...
Juan A. Sanchez   +4 more
doaj   +1 more source

The meteorite analogs of (65803) Didymos and implications for its origin

open access: yesAstronomy & Astrophysics
Context. Identifying meteorite analogs of asteroids is key to understanding their origin and evolution, evaluating planetary defense, and exploring potential space resources.
Zhai Ruoyu   +6 more
doaj   +1 more source

Modeling Carbon Outgassing from Chondritic Planetesimals

open access: yesThe Planetary Science Journal
The thermochemical evolution of planetesimals is an underprobed stage of volatile delivery to terrestrial planets during their formation, and may contribute to the volatile depletion of the Earth relative to primitive chondrites.
Bo Peng, Diana Valencia
doaj   +1 more source

The use of SEM/EDS method in mineralogical analysis of ordinary chondritic meteorite

open access: yesGeologija, 2009
The aim of this study was to evaluate the potential of scanning electron microscopy coupled with energy dispersiveX-ray spectroscopy (SEM/EDS) for determination of mineral phases according to their stoichiometry and assessment of mineral composition of ...
Breda Mirtič, Urša Curk, Miloš Miler
doaj  

Tracing the main belt origins of S-complex near-Earth objects: From space mission targets to meteorite sources

open access: yesAstronomy & Astrophysics
Context. Space missions to near-Earth objects (NEOs) provide remarkable opportunities to study and characterise their physical and compositional properties in detail. Interpreting these results in a broader context requires knowledge of their provenance,
Simon P. N.   +7 more
doaj   +1 more source

Quantitative FT-IR Analysis for Chondritic Meteorites: Search for C_60 in Meteorites [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
Infrared absorption spectra of 9 bulk samples and 3 acid residues of meteorites were obtained in the mid-infrared region (4000 ~ 400 cm^(-1)). From the known composition of meteorites studied, the possible absorption modes were investigated.
Chunglee Kim, Jongmann Yang
doaj  

Testing the Bus–DeMeo Asteroid Taxonomy Using Meteorite Spectra

open access: yesThe Planetary Science Journal
The most widely used method to spectrally classify asteroids is the Bus–DeMeo taxonomy. To test how well the Bus–DeMeo taxonomy groups asteroids on the basis of their mineralogy, we have classified ∼1500 meteorite spectra using this Bus–DeMeo system ...
Thomas H. Burbine   +5 more
doaj   +1 more source

Two-source Terrestrial Planet Formation with a Sweeping Secular Resonance

open access: yesThe Astronomical Journal
The models that most successfully reproduce the orbital architecture of the solar system terrestrial planets start from a narrow annulus of material that grows into embryos and then planets.
Max Goldberg   +2 more
doaj   +1 more source

Single chondrule K-Ar and Pb-Pb ages of Mexican ordinary chondrites as tracers of extended impact events

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
There is a good consensus about the age of the most primitive materials in the Solar System represented by carbonaceous chondrites. From these, a canonical age of the Solar System of 4567 Ma has been defined.
María del Sol Hernández-Bernal   +1 more
doaj  

Color electron microprobe cathodoluminescence of Bishunpur meteorite compared with the traditional optical microscopy method

open access: yesREM: International Engineering Journal
Cathodoluminescence (CL) imaging is an outstanding method for sub classification of Unequilibrated Ordinary Chondrites (UOC) - petrological type 3. CL can be obtained by several electron beam apparatuses.
Amanda Araujo Tosi   +4 more
doaj   +1 more source

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