Forbidden planetesimals
Earth and Planetary Astrophysics
2023-05-08 v1 Instrumentation and Methods for Astrophysics
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.
Keywords
Cite
@article{arxiv.2305.03562,
title = {Forbidden planetesimals},
author = {Laurent Schönau and Jens Teiser and Tunahan Demirci and Kolja Joeris and Tetyana Bila and F. Chioma Onyeagusi and Miriam Fritscher and Gerhard Wurm},
journal= {arXiv preprint arXiv:2305.03562},
year = {2023}
}