Forbidden planetesimals

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 d...

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Bibliographic Details
Published inarXiv.org
Main Authors Schönau, Laurent, Teiser, Jens, Demirci, Tunahan, Joeris, Kolja, Bila, Tetyana, Onyeagusi, F Chioma, Fritscher, Miriam, Wurm, Gerhard
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 05.05.2023
Subjects
Microgravity
Physics - Earth and Planetary Astrophysics
Physics - Instrumentation and Methods for Astrophysics
Planet formation
Pressure
Protoplanetary disks
Shear stress
Solar nebula
Wind erosion
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Summary: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.
Bibliography:SourceType-Working Papers-1
ObjectType-Working Paper/Pre-Print-1
content type line 50
ISSN:2331-8422
DOI:10.48550/arxiv.2305.03562