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arXiv · 2305.03562

Forbidden planetesimals

Laurent Schönau·Jens Teiser·Tunahan Demirci·Kolja Joeris·Tetyana Bila·F. Chioma Onyeagusi·Miriam Fritscher·Gerhard Wurm
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Abstract

Planetesimals are born fragile and are subject to destruction by wind erosion as they move through the gas of a protoplanetary disk. In microgravity experiments, we determined the shear stress necessary for erosion of a surface consisting of 1 mm dust pebbles down to 1 Pa ambient pressure. This is directly applicable to protoplanetary disks. Even pebble pile planetesimals with low eccentricities of 0.1 cannot survive inside of 1 au in a minimum-mass solar nebula, and safe zones for planetesimals with higher eccentricities are located even farther out.

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Laurent Schönau, Jens Teiser, Tunahan Demirci, Kolja Joeris, Tetyana Bila, F. Chioma Onyeagusi, Miriam Fritscher, Gerhard Wurm. 2023-05-05. Forbidden planetesimals. https://doi.org/10.1051/0004-6361%2F202245499

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