Retrieving planet formation parameters of WASP-77Ab using SimAb
Astronomy and Astrophysics, vol. 675, pp. A95
Abstract
Context. The atmospheric compositions of planets offer a unique view into their respective formation processes. State-of-the-art observatories and techniques are finally able to provide high-precision data on atmospheric composition that can be used to constrain planet formation. Aims. In this context, we focus on the formation of WASP-77Ab based on previous observations of its atmosphere, which have provided precise C/O and metallicity measurements. Methods. We use the SimAb planet formation simulation to model the formation of WASP-77Ab. We assume two compositions for the disk WASP-77Ab was formed within: one of a solar composition and one that represents the composition of WASP-77A. In addition, we consider two different scenarios regarding the migration of the planet and we study the possible planet formation paths that reproduce the composition of WASP-77Ab. Results. This work shows that the planet is expected to have formed in a disk where not many planetesimals could be accreted. Moreover, we demonstrate that the most likely migration scenario is disk-free migration, whereby the planet initiates its Type II migration within the CO ice line and ends it beyond the water ice line.
Authors 3
-
University of Amsterdam · Chalmers University of Technology · Space Research Organisation Netherlands
Affiliation as printed
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904,, Amsterdam 1098XH, The Netherlands
Department of Space, Earth and Environment, Chalmers University of Technology, , Gothenburg 412 96, Sweden
SRON Leiden, Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098XH Amsterdam
Department of Space, Earth and Environment, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
SRON Leiden, Niels Bohrweg 4, 2333 CA Leiden, the Netherlands
-
University of Amsterdam · Space Research Organisation Netherlands
Affiliation as printed
SRON Leiden, Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098XH Amsterdam
SRON Leiden, Niels Bohrweg 4, 2333 CA Leiden, the Netherlands
-
Affiliation as printed
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904,, Amsterdam 1098XH, The Netherlands
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098XH Amsterdam
Cited by 7 stored of 7
7 results
No patents citing this paper on Lens.org (checked 2026-10-11).