Forbidden planetesimals

doi:10.1051/0004-6361/202245499

2023-04-17

Florence Chioma Onyeagusi

Miriam Fritscher

Gerhard Wurm

DOI：10.1051/0004-6361/202245499

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摘要

En 中文

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.

Keyword:

planets and satellites: dynamical evolution and stability

planets and satellites: formation

planets and satellites: physical evolution

protoplanetary disks

planet-disk interactions

期刊

Astronomy and Astrophysics

IF:

5.8

论文数:

5.0W

被引数:

18.3W

机构

University of Duisburg Essen

学者数:

2.2W

论文数: 1.7W

被引数: 22

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