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Chondritic Planetary Bodies and the Protoplanetary Disk

Thursday, March 16, 2023, 8:20 AM
Waterway Ballroom 6

Jangmi Han
Larry Nittler
Michael Zolensky
8:20 AM
Session Introduction
8:25 AM
Spitzer F.* Burkhardt C. Kleine T. Hayabusa2 Initial Analysis Chem. Team  Hayabusa2-Initial-Analysis core 
Ni Isotopic Composition of Ryugu Samples Returned by the Hayabusa2 Mission [#2488]
The Ni isotopic composition of Ryugu is identical to that of CIs and different from all other CC and NC meteorites indicating a distinct formation region.
8:35 AM
Kita N. T.* Kitajima K. Kawasaki N. Nagashima K. Sakamoto N. et al.
High Precision SIMS Oxygen Isotope Analyses of Carbonates in Ryugu [#1669]
We report high-precision SIMS oxygen three-isotope analyses of dolomite and breunnerite in Ryugu and address the evolution of aqueous fluid in the parent asteroid.
8:45 AM
Nittler L. R.* Barosch J. Wang J. Alexander C. M. O'D.
Water in Asteroid Ryugu is Deuterium-Rich Compared to Earth and CI Chondrites [#1411]
Use oxygen ions / Measure Ryugu water / Deuterium-rich!
8:55 AM
Aléon J.* Mostefaoui S. Bureau H. Vangu D. Khodja H. et al.
An Exploration of Hydrogen Content in Magnetite from Asteroid Ryugu [#1974]
H content of magnetite from asteroid Ryugu has been measured by NanoSIMS and was found to be correlated with Si content, morphology, and O isotopes.
9:05 AM
Panel Q&A
9:25 AM
Bose M.* Root R. A.
Ryugu Particles Contain Sulfur in Multiple Oxidation States [#2205]
Sulfur chemistry in Ryugu — rich.
9:35 AM
Verchovsky A. B.* Feargus F. A. J. Anand M. Franch I. A. Grady M. M. et al.
Ryugu's Volalatiles Investigated Using Stepped Combustion and EGA Methods [#2471]
The Hayabusa2 A0219 sample has been anlysed using stepped combustion and evoled gas analyses for C, N, and other common volatiles (H2O, H2, S and noble gases).
9:45 AM
Cody G. D.* Alexander C. M. O'D. Foustoukos D. I. Kebukawa Y.
The Evolution of Hydrogen Isotopes in Chondritic Insoluble Organic Solids [#1506]
Reduction in D/H with molecular evolution of insoluble organic matter in CCs results from loss of aliphatic hydrogen and D-H exchange with D depleted water.
9:55 AM
Burton A. S.* Berger E. L.
Investigating Amino Acid Heterogeneity in Milligram-Scale Samples of the Murchison CM2 Carbonaceous Chondrite [#2484]
The extent of amino acid heterogeneity in multiple samples of the Murchison meteorite, all collected from the same 250-mg chip, were investigated.
10:05 AM
Panel Q&A
10:25 AM
Caplan C. E.* Dominguez G. Gillis-Davis J. J. McKeegan K. D. Liu M. C.
Detection of Oxygen Implantation via Electron Irradiation of Water Ice on Silicon Using AFM-IR Techniques [#2430]
Water-ice-covered silicon wafers were electron irradiated to understand the heterogenous nature of oxygen implantation using AFM-IR to improve SIMS measurements.
10:35 AM
Yang X.* Ciesla F. J. Heck P. R.
Quantification of the High Early Solar Activity Using Cosmogenic Neon Nuclides in Meteoritic Minerals [#1344]
The protosun has been thought to be highly active but not well-constrained. Here we provide an improved estimate of the young Sun’s activity with a new model.
10:45 AM
Asphaug E.*
Hysteretic Evolution of Accreting Planetary Interiors [#1686]
Why meteorites / Are so weird may be due to / Hysteretic growth.
10:55 AM
Estrada P. R.* Umurhan O. M.
Can the Streaming Instability Form the First Planetesimals in Globally Turbulent Protoplanetary Disks? [#2950]
We explore whether conditions for the SI can realistically be achieved within the first million years of a globally turbulent protoplanetary disk.
11:05 AM
Panel Q&A
11:25 AM
Session Closure