List of works by Conel M. O'D. Alexander

A Common Origin for Organics in Meteorites and Comets: Was It Interstellar?

A cometary building block in a primitive asteroidal meteorite

A molecular and isotopic study of the macromolecular organic matter of the ungrouped C2 WIS 91600 and its relationship to Tagish Lake and PCA 91008

scholarly article

A transmission electron microscopy study of presolar hibonite ⬇️

A transmission electron microscopy study of presolar spinel

scholarly article

Abundances of presolar silicon carbide grains in primitive meteorites determined by NanoSIMS

scholarly article by Jemma Davidson et al published August 2014 in Geochimica et Cosmochimica Acta

Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu

scientific article published on 14 July 2023

Aluminum‐, Calcium‐ and Titanium‐rich Oxide Stardust in Ordinary Chondrite Meteorites ⬇️

scholarly article by Larry R. Nittler et al published August 2008 in The Astrophysical Journal

Assessment of nebular versus parent body processes on presolar components present in chondrites: Evidence from osmium isotopes

article

Author Correction: Contribution of Ryugu-like material to Earth’s volatile inventory by Cu and Zn isotopic analysis

scientific article published on 14 March 2023

Automated isotopic measurements of micron-sized dust: application to meteoritic presolar silicon carbide

scientific article

Bleached chondrules: Evidence for widespread aqueous processes on the parent asteroids of ordinary chondrites

scholarly article

Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu

scientific article published on 10 July 2023

Characterization of Presolar Silicate and Oxide Grains in Primitive Carbonaceous Chondrites ⬇️

Chemical Evidence for Cell Wall Lignification and the Evolution of Tracheids in Early Devonian Plants

scientific article

Chirality of meteoritic free and IOM-derived monocarboxylic acids and implications for prebiotic organic synthesis

scholarly article

Chondrite diversity revealed by chromium, calcium and magnesium isotopes

scholarly article

Chondrule formation in particle-rich nebular regions at least hundreds of kilometres across.

scientific article published in May 2006

Chromium Isotopic Evidence for an Early Formation of Chondrules from the Ornans CO Chondrite

article

Chromium Stable Isotope Panorama of Chondrites and Implications for Earth Early Accretion

scholarly article

Chromium isotopic insights into the origin of chondrite parent bodies and the early terrestrial volatile depletion

scholarly article

Comet 81P/Wild 2 under a microscope

scientific article

Common Occurrence of Explosive Hydrogen Burning in Type II Supernovae

scientific article published in the Astrophysical Journal

Comparison of FT‐IR spectra of bulk and acid insoluble organic matter in chondritic meteorites: An implication for missing carbon during demineralization

scholarly article

Compositional diversity in insoluble organic matter in type 1, 2 and 3 chondrites as detected by infrared spectroscopy

scholarly article

Contribution of Ryugu-like material to Earth’s volatile inventory by Cu and Zn isotopic analysis

scholarly article

Contributors to chromium isotope variation of meteorites

scholarly article

Coordinated EDX and micro-Raman analysis of presolar silicon carbide: A novel, nondestructive method to identify rare subgroup SiC

scholarly article

Coordinated EDX and micro‐Raman analysis of presolar silicon carbide: A novel, nondestructive method to identify rare subgroup SiC

scholarly article

Coordinated analyses of presolar grains in the Allan Hills 77307 and Queen Elizabeth range 99177 meteorites ⬇️

scholarly article

Correlated nucleosynthetic isotopic variability in Cr, Sr, Ba, Sm, Nd and Hf in Murchison and QUE 97008

scholarly article

Corrigendum to “Mineralogy and petrology of Dominion Range 08006: A very primitive CO3 carbonaceous chondrite” [Geochim. Cosmochim. Acta 265 (2019) 259–278]

scientific article published in August 2021

Cosmochemical consequences of particle trajectories during FU Orionis outbursts by the early Sun

scholarly article

David J. Barber (1935–2020)

scholarly article

Effects of secondary alteration on the composition of free and IOM-derived monocarboxylic acids in carbonaceous chondrites

article

Elemental redistribution in Tieschitz and the origin of white matrix

scholarly article

Erratum: “Aluminum‐, Calcium‐ and Titanium‐rich Oxide Stardust in Ordinary Chondrite Meteorites” (ApJ, 682, 1450 [2008])

scholarly article by Larry R. Nittler et al published 20 October 2008 in The Astrophysical Journal

Erratum: “J-type Carbon Stars: A Dominant Source of 14N-rich Presolar SiC Grains of Type AB” (2017, ApJL, 844, L12) ⬇️

scholarly article published in Letters of the Astrophysical Journal

Establishing a molecular relationship between chondritic and cometary organic solids

scientific article published on 4 April 2011

Evolution of CAI-sized Particles during FU Orionis Outbursts. I. Particle Trajectories in Protoplanetary Disks with Beta Cooling

scientific article

Exploring the origins of deuterium enrichments in solar nebular organics ⬇️

scientific article published in the Astrophysical Journal

Explosive Nucleosynthesis in Core-collapse Type II Supernovae: Insights from New C, N, Si, and Al–Mg Isotopic Compositions of Presolar Grains

scholarly article published in January 2024

Extremely 54Cr- and 50Ti-rich presolar oxide grains in a primitive meteorite: Formation in rare types of supernovae and implications for the astrophysical context of solar system birth. ⬇️

scientific article published on 18 March 2018

High Abundances of Presolar Grains and N-rich Organic Matter in CO3.0 Chondrite Dominion Range 08006

scholarly article

High Resolution Stepped-Combustion Mass Spectrometry: Application to the Detection and Analysis of Fine-Grained Diamond in Meteorites and Rocks

scientific article

High-temperature Dust Condensation around an AGB Star: Evidence from a Highly Pristine Presolar Corundum ⬇️

article

Hydrogen Isotopic Composition of Hydrous Minerals in Asteroid Ryugu

scientific article published in April 2023

Interstellar chemistry recorded in organic matter from primitive meteorites

scientific article published on May 2006

Isotopic and chemical variation of organic nanoglobules in primitive meteorites

scholarly article

Isotopic anomalies in organic nanoglobules from Comet 81P/Wild 2: Comparison to Murchison nanoglobules and isotopic anomalies induced in terrestrial organics by electron irradiation

scholarly article

J-type Carbon Stars: A Dominant Source of 14N-rich Presolar SiC Grains of Type AB ⬇️

scientific article

Late formation of silicon carbide in type II supernovae.

scientific article

Lithium-Beryllium-Boron isotopic compositions in meteoritic hibonite: implications for origin of ^10^Be and early solar system irradiation ⬇️

scholarly article

Mass-dependent fractionation of Mg, Si, and Fe isotopes in five stony cosmic spherules

scientific article

Mass-independent and mass-dependent Cr isotopic composition of the Rumuruti (R) chondrites: Implications for their origin and planet formation

scientific article published in January 2021

Matrix-induced isotopic mass fractionation in the ICP-MS

scientific article

Measuring the level of interstellar inheritance in the solar protoplanetary disk

scholarly article

Meteorites have inherited nucleosynthetic anomalies of potassium-40 produced in supernovae

scientific article published on 27 January 2023

Meteoritic evidence for a previously unrecognized hydrogen reservoir on Mars

article

Meteoritic oxide grain from supernova found

scientific article published in Nature

Meteoritics: A question of timing

scientific article published on 01 June 2003

Microscopic organic analysis using two-step laser mass spectrometry: application to meteoritic acid residues

scientific article

Mineral associations and character of isotopically anomalous organic material in the Tagish Lake carbonaceous chondrite

scientific article published in October 2010

Mineralogy and petrology of Dominion Range 08006: A very primitive CO3 carbonaceous chondrite

Modeling diffusive dissolution in silicate melts

scholarly article

Molecular and compound-specific hydrogen isotope analyses of insoluble organic matter from different carbonaceous chondrite groups

scholarly article

Morphologies, Isotopes, Crystal Structures, and Microstructures of Presolar Al2O3 Grains: a NanoSIMS, EBSD, EDS, CL, and FIB-TEM study

NMR studies of chemical structural variation of insoluble organic matter from different carbonaceous chondrite groups

article by George D. Cody & Conel M. O'D. Alexander published February 2005 in Geochimica et Cosmochimica Acta

Nanophase magnetite in matrix of anomalous EL3 chondrite Northwest Africa (NWA) 8785

scientific article published on 23 November 2023

Neodymium‐142 deficits and samarium neutron stratigraphy of C‐type asteroid (162173) Ryugu

scientific article published on 7 December 2023

New Constraints on the Abundance and Composition of Organic Matter on Ceres

scholarly article

New Multielement Isotopic Compositions of Presolar SiC Grains: Implications for Their Stellar Origins

scholarly article

Noble gases in CM carbonaceous chondrites: Effect of parent body aqueous and thermal alteration and cosmic ray exposure ages

scientific article published in October 2021

Organics Captured from Comet 81P/Wild 2 by the Stardust Spacecraft

scientific article published in Science

Organics in meteorites - Solar or interstellar?

Organics preserved in anhydrous interplanetary dust particles: Pristine or not?

scholarly article

Origin and evolution of prebiotic organic matter as inferred from the Tagish Lake meteorite

scientific article

Origin of water and mantle–crust interactions on Mars inferred from hydrogen isotopes and volatile element abundances of olivine-hosted melt inclusions of primitive shergottites

article published in 2012

Osmium isotope anomalies in chondrites: Results for acid residues and related leachates

scholarly article by Tetsuya Yokoyama et al published March 2010 in Earth and Planetary Science Letters

Osmium isotope evidence for uniform distribution of s- and r-process components in the early solar system

scholarly article by Tetsuya Yokoyama et al published July 2007 in Earth and Planetary Science Letters

Oxygen isotopes of anhydrous primary minerals show kinship between asteroid Ryugu and comet 81P/Wild2

scholarly article

Oxygen, magnesium and chromium isotopic ratios of presolar spinel grains

scholarly article by Ernst Zinner et al published August 2005 in Geochimica et Cosmochimica Acta

Petrography, stable isotope compositions, microRaman spectroscopy, and presolar components of Roberts Massif 04133: A reduced CV3 carbonaceous chondrite.

scholarly article

Polymorphism in presolar Al2O3 grains from asymptotic giant branch stars

scientific article published on 01 September 2004

Pre-solar grains: outlook and opportunities for astrophysics

Presolar O- and C-anomalous grains in unequilibrated ordinary chondrite matrices

scientific article published in 2022

Presolar Silicon Carbide Grains of Types Y and Z: Their Molybdenum Isotopic Compositions and Stellar Origins

scholarly article by Nan Liu et al published 9 August 2019 in The Astrophysical Journal

Presolar Stardust in Asteroid Ryugu

scholarly article

Presolar grains in primitive ungrouped carbonaceous chondrite Northwest Africa 5958

scientific article

Presolar silicon carbide from the Indarch (EH4) meteorite: Comparison with silicon carbide populations from other meteorite classes

scholarly article

Presolar stardust in highly pristine CM chondrites Asuka 12169 and Asuka 12236

scholarly article

Quantitative models for the elemental and isotopic fractionations in chondrites: The carbonaceous chondrites

scholarly article

Quantitative models for the elemental and isotopic fractionations in the chondrites: The non-carbonaceous chondrites

scholarly article

Questions, questions: Can the contradictions between the petrologic, isotopic, thermodynamic, and astrophysical constraints on chondrule formation be resolved?

scholarly article

Raman Spectroscopy on Cometary and Meteoritic Organic Matter

Re-examining the role of chondrules in producing the elemental fractionations in chondrites

scholarly article

Reflectance spectroscopy of insoluble organic matter (IOM) and carbonaceous meteorites

scholarly article

Reply to: GEMS and the devil in their details

Ryugu’s nucleosynthetic heritage from the outskirts of the Solar System

scholarly article

Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites

scholarly article

Spectral evidence for amorphous silicates in least-processed CO meteorites and their parent bodies

article by Maggie McAdam et al published May 2018 in Icarus

Stellar Origin of 15N-rich Presolar SiC Grains of Type AB: Supernovae with Explosive Hydrogen Burning ⬇️

scholarly article

Stellar origins of extremely ^13^C- and ^15^N-enriched presolar SiC grains: novae or supernovae? ⬇️

scientific article published in the Astrophysical Journal

Structural, chemical and isotopic examinations of interstellar organic matter extracted from meteorites and interstellar dust particles

Supernova shock-wave-induced CO-formation of glassy carbon and nanodiamond ⬇️

The D/H ratio of water in the solar nebula during its formation and evolution

scholarly article

The Effect of Jupiter's Formation on the Distribution of Refractory Elements and Inclusions in Meteorites

scientific article

The Formation Conditions of Chondrules and Chondrites

scientific article

The Magnesium Isotope Composition of Samples Returned from Asteroid Ryugu

scientific article published on 24 November 2023

The Origin and Evolution of Organic Matter in Carbonaceous Chondrites and Links to Their Parent Bodies

The accretion and impact history of the ordinary chondrite parent bodies

scholarly article

The ancient heritage of water ice in the solar system. ⬇️

scientific article

The chromium isotopic composition of Almahata Sitta

scholarly article

The classification of CM and CR chondrites using bulk H, C and N abundances and isotopic compositions

scholarly article

The formation of chondrules by open-system melting of nebular condensates 1 1Associate editor: C. Koeberl

scientific article

The insoluble carbonaceous material of CM chondrites: A possible source of discrete organic compounds under hydrothermal conditions

scholarly article

The nature, origin and modification of insoluble organic matter in chondrites, the possibly interstellar source of Earth's C and N

scientific article published on 26 January 2017

The old, unique C1 chondrite Flensburg – Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies

scientific article

The origin of chondritic macromolecular organic matter: A carbon and nitrogen isotope study

scholarly article

The origin of inner Solar System water.

scientific article

The provenances of asteroids, and their contributions to the volatile inventories of the terrestrial planets.

scientific article published on 12 July 2012

Titanium isotopic compositions of rare presolar SiC grain types from the Murchison meteorite

article

Unraveling the chemical history of the Solar System as recorded in extraterrestrial organic matter

Vapor–Melt Exchange

Water Reservoirs in Small Planetary Bodies: Meteorites, Asteroids, and Comets.

scientific article

Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample

scientific article published on 10 November 2023

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