2018/03/27 by Alexander Hubbard, Mordecai-Mark Mac Low, Mordecai‐Mark Mac Low +1 · 4 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Chondrule #Context (archaeology) #Cosmic dust #Formation and evolution of the Solar System #Interplanetary dust cloud #Nebula #Solar System #astro-ph.EP
paper · pdf · doi:10.1111/maps.13101
published in Meteoritics and Planetary Science 53(7), 1507-1515 (Wiley) · 7 pages, 3 figures, accepted, Meteoritics & Planetary Sciences
arxiv created 2018/03/27 · openalex created_date 2018/04/06 · openalex publication_date 2018/04/17 · arxiv updated 2019/02/13 · openalex updated_date 2026/08/05
Abstract Meteoritical and astrophysical models of planet formation make contradictory predictions for dust concentration factors in chondrule‐forming regions of the solar nebula. Meteoritical and cosmochemical models strongly suggest that chondrules, a key component of the meteoritical record, formed in regions with solids‐to‐gas mass ratios orders above the solar nebula average. However, models of dust grain dynamics in protoplanetary disks struggle to surpass concentration factors of a few except during very short‐lived stages in a dust grain's life. Worse, those models do not predict significant concentration factors for dust grains the size of chondrule precursors. We briefly develop the difficulty in concentrating dust particles in the context of nebular chondrule formation and show that the disagreement is sufficiently stark that cosmochemists should explore ideas that might revise the concentration factor requirements downward.