355 citations · 1.4k across the 15 of their papers we have counts for
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New NanoSIMS Multielement Isotope Data Reveal CO Novae As Key Sources Of 13C-rich Presolar Silicon Carbide Grains
Jordi José, Nan Liu, Conel M. O'D. Alexander +1
We present new multielement NanoSIMS isotopic measurements (C, N, Si, Mg-Al, Ti, and Ni) for four putative nova SiC grains and 79 AB SiC grains from the Murchison meteorite to reas…
Explosive Nucleosynthesis in Core-Collapse Type II Supernovae: Insights from new C, N, Si, and Al-Mg isotopic compositions of presolar grains
Nan Liu, Conel M. O'D. Alexander, Bradley S. Meyer +3
We report C, N, Si, and Al-Mg isotope data for 39 presolar X silicon carbide (SiC) and four silicon nitride grains - a group of presolar grains that condensed in the remnants of co…
New Multielement Isotopic Compositions of Presolar SiC Grains: Implications for Their Stellar Origins
Nan Liu, Jens Barosch, Larry R. Nittler +5
We report NanoSIMS Si and Mg-Al isotopic data (and C, N, and Ti isotopic data when available) for 85 submicron- to micron-sized presolar SiC grains from the CM2 Murchison meteorite…
Common Occurrence of Explosive Hydrogen Burning in Type II Supernovae
Nan Liu, Thomas Stephan, Patrick Boehnke +6
We report Mo isotopic data for 16 15N-rich presolar SiC grains of type AB (14N/15N<solar, AB1) and their correlated Sr and Ba isotope ratios when available. Eight of the 16 AB1 gra…
Exploring the Origins of Deuterium Enrichments in Solar Nebular Organics
L. Ilsedore Cleeves, Edwin A. Bergin, Conel M. O'D. Alexander +4
Deuterium-to-hydrogen (D/H) enrichments in molecular species provide clues about their original formation environment. The organic materials in primitive solar system bodies have g…
The ancient heritage of water ice in the solar system
L. Ilsedore Cleeves, Edwin A. Bergin, Conel M. O'D. Alexander +4
Identifying the source of Earth's water is central to understanding the origins of life-fostering environments and to assessing the prevalence of such environments in space. Water…
A transmission electron microscopy study of presolar hibonite
Thomas J. Zega, Conel M. O'D. Alexander, Larry R. Nittler +1
We report isotopic and microstructural data on five presolar hibonite grains identified in an acid residue of the Krymka LL3.1 ordinary chondrite. Isotopic measurements by secondar…
Coordinated Analyses of Presolar Grains in the Allan Hills 77307 and Queen Elizabeth Range 99177 Meteorites
Ann N. Nguyen, Larry R. Nittler, Frank J. Stadermann +2
We report the identification of presolar silicates (~177 ppm), presolar oxides (~11 ppm), and one presolar SiO2 grain in the Allan Hills (ALHA) 77307 chondrite. Three grains having…