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from Part II - Possible Chondrule-Forming Mechanisms

Edited by Sara S. Russell, Natural History Museum, London, Harold C. Connolly Jr., Rowan University, New Jersey, Alexander N. Krot, University of Hawaii, Manoa
Book: Chondrules
Published online: 30 June 2018
Print publication: 19 July 2018, pp 375-399
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Summary

Nebular shock heating is one of the most fully developed and rigorous models for chondrule formation, and is also the most consistent with the meteoritic record. In this review, we compare the results of current shock modeling to the wealth of meteoritic observations, to highlight where there is agreement and where there is potential failure of the models. The discussion is focused on gravitational disk instability-driven, large-scale shocks and on local bow shocks, with attention to the astrophysical setting for both. We suggest that more than one shock driver may be physically motivated and necessary to explain the variety of chondrules.

On the possibility of enrichment and differentiation in gas giants during birth by disk instability
Aaron C. Boley, Richard H. Durisen
Journal: Proceedings of the International Astronomical Union / Volume 6 / Issue S276 / October 2010
Published online by Cambridge University Press: 10 November 2011, pp. 401-402
Print publication: October 2010
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We investigate the coupling between solids and gas during the formation of gas giant planets by disk fragmentation in the outer regions of massive disks. We find that fragments can become differentiated at birth. Even if an entire clump does not survive, differentiation could create solids cores that survive to accrete gaseous envelopes later.