118 citations · 545 across the 10 of their papers we have counts for
10 papers
Presolar O- and C-anomalous grains in unequilibrated ordinary chondrite matrices
Jens Barosch, Larry Nittler, Jianhua Wang +4
Presolar grains are trace components in chondrite matrices. Their abundances and compositions have been systematically studied in carbonaceous chondrites but rarely in situ in othe…
Presolar stardust in asteroid Ryugu
Jens Barosch, Larry R. Nittler, Jianhua Wang +121
We have conducted a NanoSIMS-based search for presolar material in samples recently returned from C-type asteroid Ryugu as part of JAXA's Hayabusa2 mission. We report the detection…
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…
Extremely Cr- and Ti-rich presolar oxide grains in a primitive meteorite: Formation in rare types of supernovae and implications for the astrophysical context of solar system birth
Larry R. Nittler, Conel M. O'D. Alexander, Nan Liu +1
We report the identification of 19 presolar oxide grains from the Orgueil CI meteorite with substantial enrichments in Cr, with Cr/Cr ratios ranging from 1.2 t…
High Abundances of Presolar Grains and N-rich Organic Matter in CO3.0 Chondrite Dominion Range 08006
Larry R. Nittler, Conel M. O'D. Alexander, Jemma Davidson +3
NanoSIMS C-, N-, and O-isotopic mapping of matrix in CO3.0 chondrite Dominion Range (DOM) 08006 revealed it to have in its matrix the highest abundance of presolar O-rich grains (2…
Late formation of silicon carbide in type II supernovae
Nan Liu, Larry R. Nittler, Conel O'M. D. Alexander +1
We have found that individual presolar silicon carbide (SiC) dust grains from supernovae show a positive correlation between 49Ti and 28Si excesses, which is attributed to the radi…