Monday, March 27, 2023 1:30pm to 2:30pm
About this Event
Short-lived radionuclides in meteorites as a record of the astrophysical environment of solar system formation.
Short-lived radionuclides (SLRs) in meteorites are those for which the original inventory inherited from the interstellar medium has completely decayed away. SLRs are also referred to as extinct radionuclides. SLRs are important tools for constraining the timescales of early Solar System processes linked to the origin and evolution of planetesimals, the building blocks of planets. Iron-60 (t1/2=2.6 Ma), a SLR that decays to 60Ni, is of interest for constraining early solar system chronology, identifying the stellar source of short-lived radionuclides, and understanding the astrophysical environment of the Sun’s formation. Previous efforts to constrain the initial solar system (60Fe/56Fe)SS via in situ microanalytical techniques have primarily focused on chondrules from unequilibrated ordinary chondrites (UOCs). In this study, we compare 60Fe-60Ni systematics of chondrules from UOCs and those from CO3 chondrites, potentially more pristine samples.
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Meeting ID: 956 3938 3090