The role of ice in planet formation
Author
Summary, in English
As stars form, they are surrounded by a disc composed of gas, dust and ice – the protoplanetary disc, where solids grow from micrometre-sized dust to planets. Small dust grows readily by collisions. However, it is challenging to reach high enough particle sizes and dust-to-gas-ratios for continued growth to planetesimals – kilometre-sized and larger planetary building blocks. In this thesis I explore the effect of ice on the growth towards pebbles, in order to investigate if the water ice line – the radial distance from the star where water undergoes a phase change from
vapour to solid form – can be a favourable location for the initiation of growth towards planetesimals. In a series of papers, I numerically and experimentally investigate condensation and sublimation at the water ice line. I find that micrometre-sized dust particles can grow quickly to icy pebbles through condensation. This confirms that the water ice line can be a favourable location for further growth towards planetesimals and planets.
vapour to solid form – can be a favourable location for the initiation of growth towards planetesimals. In a series of papers, I numerically and experimentally investigate condensation and sublimation at the water ice line. I find that micrometre-sized dust particles can grow quickly to icy pebbles through condensation. This confirms that the water ice line can be a favourable location for further growth towards planetesimals and planets.
Department/s
Publishing year
2024
Language
English
Full text
Document type
Dissertation
Publisher
Lund University
Topic
- Astronomy, Astrophysics and Cosmology
Keywords
- Planetbildning
- Protoplanetära skivor
- Planet formation
- Protoplanetary discs
Status
Published
Supervisor
ISBN/ISSN/Other
- ISBN: 978-91-8104-019-7
- ISBN: 978-91-8104-020-3
Defence date
26 April 2024
Defence time
13:00
Defence place
Lundmarksalen, Sölvegatan 27, Lund.
Opponent
- Sebastian Krijt (Dr.)