Ejection of Chondrules from Fluffy MatricesOPEN ACCESS 

Sota Arakawa

Accepted for publication in ApJ
Draft version


update (8 September 2017): LINK
The Astrophysical Journal
Volume 846, Number 2

“Chondritic meteorites primarily contain millimeter-sized spherical objects, the so-called chondrules; however, the co-accretion process of chondrules and matrix grains is not yet understood. In this study, we investigate the ejection process of chondrules via collisions of fluffy aggregates composed of chondrules and matrices. We reveal that fluffy aggregates cannot grow into planetesimals without losing chondrules if we assume that the chondrite parent bodies are formed via direct aggregation of similar-sized aggregates. Therefore, an examination of other growth pathways is necessary to explain the formation of rocky planetesimals in our solar system. “