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Searching for calcium-aluminum-rich inclusions in cometary particles with Rosetta/COSIMA

Stenzel, Oliver; Kissel, Jochen; Hilchenbach, Martin +2 more

The calcium-aluminum-rich inclusions (CAIs) found in chondritic meteorites are probably the oldest solar system solids, dating back to 4567.30 ± 0.16 million years ago. They are thought to have formed in the protosolar nebula within a few astronomical units of the Sun, and at a temperature of around 1300 K. The Stardust mission found evidence of C…

A plausible link between the asteroid 21 Lutetia and CH carbonaceous chondrites

Fornasier, Sonia; Barucci, Maria A.; Trigo-Rodríguez, Josep M. +3 more

A crucial topic in planetology research is establishing links between primitive meteorites and their parent asteroids. In this study, we investigate the feasibility of a connection between asteroids similar to 21 Lutetia, encountered by the Rosetta mission in July 2010, and the CH3 carbonaceous chondrite Pecora Escarpment 91467 (PCA 91467). Severa…