Fingerprints of the protosolar cloud collapse in the Solar System: Refractory inclusions distribution and isotopic anomalies in meteorites

Francesco C. Pignatale (1, 2) , Emmanuel Jacquet (1) , Marc Chaussidon (2) , Sébastien Charnoz (2)

1 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
2 IPGP (UMR_7154) - Institut de Physique du Globe de Paris

Increasing evidences suggest that the building blocks of Ca-Al-rich inclusions (CAIs) could have formed with the Sun, during the collapse of the parent cloud. However, determination of the relative age of CAIs relies on the homogeneous distribution of their short-lived radionuclide ²⁶Al that is used as a chronometer. Some CAIs show evidence of ²⁶Al/²⁷ Al variation that is independent of decay.

Keywords: astrochemistry; solar system: formation; meteor meteoroids

Domains: Sciences of the Universe [physics]

Francesco C. Pignatale, Emmanuel Jacquet, Marc Chaussidon, Sébastien Charnoz. Fingerprints of the protosolar cloud collapse in the Solar System: Refractory inclusions distribution and isotopic anomalies in meteorites. Laboratory Astrophysics: From Observations to Interpretation, 0000, à renseigner, Unknown Region. pp.100-102, ⟨10.1017/S1743921319007543⟩. ⟨insu-03584814⟩