| Issue |
A&A
Volume 672, April 2023
|
|
|---|---|---|
| Article Number | A169 | |
| Number of page(s) | 6 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361/202245499 | |
| Published online | 17 April 2023 | |
Forbidden planetesimals
University of Duisburg-Essen, Faculty of Physics,
Lotharstr. 1,
47057
Duisburg, Germany
e-mail: laurent.schoenau@uni-due.de
Received:
18
November
2022
Accepted:
20
February
2023
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.
Key words: planets and satellites: dynamical evolution and stability / planets and satellites: formation / planets and satellites: physical evolution / protoplanetary disks / planet-disk interactions
© The Authors 2023
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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