646 citations · 2.4k across the 29 of their papers we have counts for
8 papers · 1 filter
Microlensing Results Challenge the Core Accretion Runaway Growth Scenario for Gas Giants
Daisuke Suzuki, David P. Bennett, Shigeru Ida +14
We compare the planet-to-star mass-ratio distribution measured by gravitational microlensing to core accretion theory predictions from population synthesis models. The core accreti…
How planetary growth outperforms migration
Anders Johansen, Shigeru Ida, Ramon Brasser
Planetary migration is a major challenge for planet formation theories. The speed of Type I migration is proportional to the mass of a protoplanet, while the final decade of growth…
Orbital evolution of Saturn's mid-sized moons and the tidal heating of Enceladus
Ayano Nakajima, Shigeru Ida, Jun Kimura +1
The formation and orbital evolution of Saturn's inner mid-sized moons are still debated. The most puzzling aspects are 1) how the Tethys-Dione pair and the Mimas-Enceladus pair pas…
Revisiting the pre-main-sequence evolution of stars II. Consequences of planet formation on stellar surface composition
Masanobu Kunitomo, Tristan Guillot, Shigeru Ida +1
We want to investigate how planet formation is imprinted on stellar surface composition using up-to-date stellar evolution models. We simulate the evolution of pre-main-sequence st…
Trapping low-mass planets at the inner edge of the protostellar disc
R. Brasser, S. Matsumura, T. Muto +1
The formation of multiple close-in low-mass exoplanets is still a mystery. The challenge is to build a system wherein the outermost planet is beyond 0.2 AU from the star. Here we i…
Slowing Down Type II Migration of Gas Giants to Match Observational Data
Shigeru Ida, Hidekazu Tanaka, Anders Johansen +2
The mass and semimajor axis distribution of gas giants in exoplanetary systems obtained by radial velocity surveys shows that super-jupiter-mass planets are piled up at > 1 au, whi…