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Recent high-resolution observations show that protoplanetary disks have various kinds of structural properties or inhomogeneities. These are the consequence of a mixture of a number of physical and chemical processes taking place in the…

Earth and Planetary Astrophysics · Physics 2015-06-16 Yasuhiro Hasegawa , Ralph E. Pudritz

Aims. We track the time evolution of planet traps and snowlines in a viscously evolving protoplanetary disk using an opacity table that accounts for the composition of the dust material. Methods. We coupled a dynamical and thermodynamical…

Earth and Planetary Astrophysics · Physics 2015-05-06 Kévin Baillié , Sébastien Charnoz , Éric Pantin

(Exo-)planets inherit their budget of chemical elements from a protoplanetary disk. The disk temperature determines the phase of each chemical species, which sets the composition of solids and gas available for planet formation. We…

Earth and Planetary Astrophysics · Physics 2023-10-23 Kan Chen , Mihkel Kama , Paola Pinilla , Luke Keyte

It has been suggested that circumstellar disks evolve from dense, actively accreting structures to low-mass, replenished remnants. During this transition, grains may assemble into planetesimals, or the disk may be cleared by newborn…

Astrophysics · Physics 2007-05-23 Ray Jayawardhana

We know little about the outermost exoplanets in planetary systems, because our detection methods are insensitive to moderate-mass planets on wide orbits. However, debris discs can probe the outer-planet population, because dynamical…

Protoplanetary discs are now routinely observed and exoplanets, after the numerous indirect discoveries, are starting to be directly imaged. To better understand the planet formation process, the next step is the detection of forming…

Earth and Planetary Astrophysics · Physics 2015-09-30 Jean-François Gonzalez , Guillaume Laibe , Sarah T. Maddison , Christophe Pinte , François Ménard

A key challenge for protoplanetary disks and planet formation models is to be able to make a reliable connection between observed structures in the disks emission, like bright and dark rings or asymmetries, and the supposed existence of…

Earth and Planetary Astrophysics · Physics 2020-02-19 Gaylor Wafflard-Fernandez , Clément Baruteau

We extend the models presented in Mordasini et al. (2009) to the formation of planets orbiting stars of different masses. We discuss the properties of the resulting synthetic planet population in terms of mass, orbit, and metallicity…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yann Alibert , Christoph Mordasini , Willy Benz

Protoplanetary disks are the sites of planet formation, and the evolution and eventual dispersal of these disks strongly influences the formation of planetary systems. Disk evolution during the planet-forming epoch is driven by accretion…

Earth and Planetary Astrophysics · Physics 2015-06-17 Richard Alexander , Ilaria Pascucci , Sean Andrews , Philip Armitage , Lucas Cieza

Combining hydrodynamic planet-disk interaction simulations with dust evolution models, we show that protoplanetary disks having a giant planet can reveal diverse morphology in (sub-)millimeter continuum, including a full disk without…

Earth and Planetary Astrophysics · Physics 2018-09-19 Jaehan Bae , Paola Pinilla , Tilman Birnstiel

Circumstantial evidence suggests that most known extra-solar planetary systems are survivors of violent dynamical instabilities. Here we explore how giant planet instabilities affect the formation and survival of terrestrial planets. We…

Planets are born from disks of gas and dust, and observations of protoplanetary disks are used to constrain the initial conditions of planet formation. However, dust mass measurements of Class II disks with ALMA have called into question…

Earth and Planetary Astrophysics · Physics 2021-10-27 Gijs D. Mulders , Ilaria Pascucci , Fred J. Ciesla , Rachel B. Fernandes

We present models for the formation of terrestrial planets, and the collisional evolution of debris disks, in planetary systems that contain multiple unstable gas giants. We previously showed that the dynamics of the giant planets…

Discs of gas and dust around Myr-old stars are a by-product of the star formation process and provide the raw material to form planets. Hence, their evolution and dispersal directly impact what type of planets can form and affect the final…

Earth and Planetary Astrophysics · Physics 2017-04-05 Barbara Ercolano , Ilaria Pascucci

The tidal perturbation of embedded protoplanets on their natal disks has been widely attributed to be the cause of gap-ring structures in sub-mm images of protoplanetary disks around T Tauri stars. Numerical simulations of this process have…

Earth and Planetary Astrophysics · Physics 2021-12-08 Yi-Xian Chen , Zhuoxiao Wang , Ya-Ping Li , Clément Baruteau , Douglas N. C. Lin

Debris disks are the dust disks found around ~20% of nearby main sequence stars in far-IR surveys. They can be considered as descendants of protoplanetary disks or components of planetary systems, providing valuable information on…

Earth and Planetary Astrophysics · Physics 2018-12-05 Mark C. Wyatt

Recent detailed observations of protoplanetary discs revealed a lot of sub-structures which are mostly ring-like. One interpretation is that these rings are caused by growing planets. These potential planets are not yet opening very deep…

Earth and Planetary Astrophysics · Physics 2019-07-17 Nelson Ndugu , Bertram Bitsch , Edward Jurua

Recent discoveries of strongly misaligned transiting exoplanets pose a challenge to the established planet formation theory which assumes planetary systems to form and evolve in isolation. However, the fact that the majority of stars…

Earth and Planetary Astrophysics · Physics 2012-02-01 Ingo Thies , Pavel Kroupa , Simon P. Goodwin , Dimitris Stamatellos , Anthony P. Whitworth

Recent surveys show that protoplanetary disks have lower levels of turbulence than expected based on their observed accretion rates. A viable solution to this is that magnetized disk winds dominate angular momentum transport. This has…

Earth and Planetary Astrophysics · Physics 2022-08-17 Matthew Alessi , Ralph E. Pudritz

The ubiquity of planets and diversity of planetary systems reveal planet formation encompass many complex and competing processes. In this series of papers, we develop and upgrade a population synthesis model as a tool to identify the…

Earth and Planetary Astrophysics · Physics 2015-06-16 S. Ida , D. N. C. Lin , M. Nagasawa