197 citations · 2k across the 53 of their papers we have counts for
11 papers · 1 filter
Cluster analysis of presolar silicon carbide grains: evaluation of their classification and astrophysical implications
Asmaa Boujibar, Samantha Howell, Shuang Zhang +9
Cluster analysis of presolar silicon carbide grains based on literature data for 12C/13C, 14N/15N, δ30Si/28Si, and δ29Si/28Si including or not inferred initial 26Al/27Al data, reve…
Presolar Stardust in Highly Pristine CM Chondrites Asuka 12169 and Asuka 12236
Larry R. Nittler, Conel M. O'D. Alexander, Andrea Patzer +1
We report a NanoSIMS search for presolar grains in the CM chondrites Asuka (A) 12169 and A12236. We found 90 presolar O-rich grains and 25 SiC grains in A12169, giving matrix-norma…
The Case for Non-Cryogenic Comet Nucleus Sample Return
Keiko Nakamura-Messenger, Alexander G. Hayes, Scott Sandford +22
Comets hold answers to mysteries of the Solar System by recording presolar history, the initial states of planet formation and prebiotic organics and volatiles to the early Earth.…
Cryogenic Cometary Sample Return
Andrew J. Westphal, Larry R. Nittler, Rhonda Stroud +11
Comets likely formed in the outer regions of the protosolar nebula where they incorporated and preserved primitive presolar materials, volatiles resident in the outer disk, and mor…
X-ray Studies of Planetary Systems: A 2020 Decadal Survey White Paper
Jaesub Hong, Suzanne Romaine, Larry Nittler +5
Whether it is fluorescence emission from asteroids and moons, solar wind charge exchange from comets, exospheric escape from Mars, pion reactions on Venus, sprite lighting on Satur…
Volatile Sample Return in the Solar System
Stefanie N. Milam, Jason P. Dworkin, Jamie E. Elsila +17
We advocate for the realization of volatile sample return from various destinations including: small bodies, the Moon, Mars, ocean worlds/satellites, and plumes. As part of recent…