Influence of growth on dust settling and migration in protoplanetary discs

Crespe, Elisabeth; Gonzalez, Jean-Francois; Laibe, Guillaume; Maddison, Sarah T.; Fouchet, Laure (2010). Influence of growth on dust settling and migration in protoplanetary discs. Proceedings of the International Astronomical Union, 6(S276), pp. 405-406. Cambridge University Press 10.1017/S1743921311020540

[img]
Preview
Text
S1743921311020540.pdf - Published Version
Available under License Publisher holds Copyright.

Download (190kB) | Preview

To form meter-sized pre-planetesimals in protoplanetary discs, dust aggregates have to decouple from the gas at a distance far enough from the central star so they are not accreted. Dust grains are affected by gas drag, which results in a vertical settling towards the mid-plane, followed by radial migration. To have a better understanding of the influence of growth on the dust dynamics, we use a simple grain growth model to determine the dust distribution in observed discs. We implement a constant growth rate into a gas+dust hydrodynamics SPH code and vary the growh rate to study the resulting effect on dust distribution. The growth rate allows us to determine the relative importance between friction and growth.We show that depending on the growth rate, a range of dust distribution can result. For large enough growth rates, grains can decouple from the gas before being accreted onto the central star, thus contributing as planetary building rocks.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

08 Faculty of Science > Physics Institute
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences

UniBE Contributor:

Fouchet, Laure

Subjects:

500 Science > 530 Physics
500 Science > 520 Astronomy
600 Technology > 620 Engineering

ISSN:

1743-9213

Publisher:

Cambridge University Press

Language:

English

Submitter:

Marceline Brodmann

Date Deposited:

17 Jul 2020 11:16

Last Modified:

28 Jul 2020 15:25

Publisher DOI:

10.1017/S1743921311020540

BORIS DOI:

10.7892/boris.115361

URI:

https://boris.unibe.ch/id/eprint/115361

Actions (login required)

Edit item Edit item
Provide Feedback