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Recent observations of extrasolar gas giants suggest super-stellar C/O ratios in planetary atmospheres, while interior models of observed extrasolar giant planets additionally suggest high heavy element contents. Furthermore, recent…

地球与行星天体物理 · 物理学 2021-10-13 Aaron David Schneider , Bertram Bitsch

Planet formation is directly linked to the birthing environment that protoplanetary disks provide. The disk properties determine whether a giant planet will form and how it evolves. The number of exoplanet and disk observations is…

地球与行星天体物理 · 物理学 2023-11-08 Sofia Savvidou , Bertram Bitsch

Direct observations of gaseous exoplanets reveals that their gas envelope is commonly enriched in C/O ratio compared to that of the host star. This has been explained by considering that the gas phase of the disc could be inhomogeneous,…

地球与行星天体物理 · 物理学 2015-02-11 Thiabaud Amaury , Marboeuf Ulysse , Alibert Yann , Leya Ingo , Mezger Klaus

Protoplanetary discs are dynamic environments where the interplay between chemical processes and mass transport shapes the composition of gas and dust available for planet formation. We investigate the combined effects of volatile chemistry…

Upcoming studies of extrasolar gas giants will give precise insights into the composition of planetary atmospheres with the ultimate goal to link it to the formation history of the planet. Here, we investigate how drifting and evaporating…

地球与行星天体物理 · 物理学 2021-10-13 Aaron David Schneider , Bertram Bitsch

Giant planets can interact with multiple and chemically diverse environments in protoplanetary discs while they form and migrate to their final orbits. The way this interaction affects the accretion of gas and solids shapes the chemical…

One of the current challenges of planet formation theory is to explain the enrichment of observed exoplanetary atmospheres. Past studies have focused on scenarios where either pebbles or planetesimals were the heavy element enrichment's…

地球与行星天体物理 · 物理学 2023-11-08 Claudia Danti , Bertram Bitsch , Jingyi Mah

Atmospheric abundances are thought to constrain the planet formation pathway, because different species evaporate at different temperatures leaving distinct signatures in the accreted atmosphere. The planetary C/O ratio is thought to…

地球与行星天体物理 · 物理学 2022-09-21 Bertram Bitsch , Aaron David Schneider , Laura Kreidberg

The compositions of nascent planets depend on the compositions of their birth disks. In particular, the elemental compositions of Gas Giant gaseous envelopes depend on the elemental composition of the disk gas from which the envelope is…

星系天体物理 · 物理学 2016-11-15 Karin I. Oberg , Edwin A. Bergin

The gas and solid-state C/O ratios provide context to potentially link the atmospheric composition of planets to that of the natal disk. We provide a synthesis of extant estimates of the gaseous C/O and C/H ratios in planet-forming disks…

地球与行星天体物理 · 物理学 2024-06-19 Edwin A. Bergin , Richard A. Booth , Maria Jose Colmenares , John D. Ilee

The formation of planetesimals is a necessary step in the formation of planets. While several mechanisms have been proposed, a local dust-to-gas ratio above unity is a strong requirement to trigger the collapse of pebble clouds into…

地球与行星天体物理 · 物理学 2025-09-03 Konstantinos Odysseas Xenos , Bertram Bitsch , Geoffrey Andama

In protoplanetary disks, small mm-cm-sized pebbles drift inwards which can aid planetary growth and influence the chemical composition of their natal disks. Gaps in protoplanetary disks can hinder the effective inward transport of pebbles…

地球与行星天体物理 · 物理学 2024-10-30 Mark Eberlein , Bertram Bitsch , Ravit Helled

Chemical compositions of giant planets provide a means to constrain how and where they form. Traditionally, super-stellar elemental abundances in giant planets were thought to be possible due to accretion of metal-rich solids. Such…

地球与行星天体物理 · 物理学 2017-05-10 Richard A. Booth , Cathie J. Clarke , Nikku Madhusudhan , John D. Ilee

The composition of gas and solids in protoplanetary discs sets the composition of planets that form out of them. Recent chemical models have shown that the composition of gas and dust in discs evolves on Myr time-scales, with volatile…

地球与行星天体物理 · 物理学 2019-05-31 Richard A. Booth , John D. Ilee

The heavy element content of giant exoplanets, inferred from structure models based on their radius and mass, often exceeds predictions based on classical core accretion. Pebble drift, coupled with volatile evaporation, has been proposed as…

地球与行星天体物理 · 物理学 2026-01-28 Barry O'Donovan , Bertram Bitsch

The formation history of Jupiter has been of interest due to its ability to shape the solar system's history. Yet little attention has been paid to the formation and growth of Saturn and the other giant planets. Here, we explore the…

地球与行星天体物理 · 物理学 2024-07-31 Anuja Raorane , Ramon Brasser , Soko Matsumura , Tommy Chi Ho Lau , Man Hoi Lee , Audrey Bouvier

The formation of planets depends on the underlying protoplanetary disc structure, which influences both the accretion and migration rates of embedded planets. The disc itself evolves on time-scales of several Myr during which both…

地球与行星天体物理 · 物理学 2018-02-07 Bertram Bitsch , Michiel Lambrechts , Anders Johansen

Recent observations started revealing the compositions of protostellar discs and planets beyond the Solar System. In this paper, we explore how the compositions of terrestrial planets are affected by dynamical evolution of giant planets. We…

地球与行星天体物理 · 物理学 2016-02-17 Soko Matsumura , Ramon Brasser , Shigeru Ida

Observations of protoplanetary discs have revealed dust rings which are likely due to the presence of pressure bumps in the disc. Because these structures tend to trap drifting pebbles, it has been proposed that pressure bumps may play an…

地球与行星天体物理 · 物理学 2024-02-09 Arnaud Pierens , Sean N. Raymond

Gas-giant exoplanets are test cases for theories of planet formation as their atmospheres are proposed to carry signatures of their formation within the protoplanetary disk. The metallicity and C/O are key diagnostics, allowing to…

地球与行星天体物理 · 物理学 2025-08-14 Catherine Walsh
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