| Autor: |
Schönau, Laurent, Teiser, Jens, Demirci, Tunahan, Joeris, Kolja, Bila, Tetyana, Onyeagusi, F. Chioma, Fritscher, Miriam, Wurm, Gerhard |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
A6A 672, A169 (2023) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1051/0004-6361/202245499 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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