218 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Tokyo Institute of TechnologyJP129 papers
- The University of TokyoJP34 papers
- National Astronomical Observatory of JapanJP24 papers
- Japan Aerospace Exploration AgencyJP11 papers
- Centre National de la Recherche ScientifiqueFR10 papers
- RIKEN Center for Computational ScienceJP10 papers
- Institute of Space and Astronautical ScienceJP8 papers
- Life Science InstituteJP8 papers
- California Institute of TechnologyUS7 papers
- Hungarian Academy of SciencesHU7 papers
- Kyoto UniversityJP7 papers
- Nagoya UniversityJP7 papers
43 papers · 1 filter
Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets
Anthony D. Del Genio, Nancy Y. Kiang, Michael J. Way +8
The potential habitability of known exoplanets is often categorized by a nominal equilibrium temperature assuming a Bond albedo of either 0.3, similar to Earth, or 0. As an indicat…
On the potential for open-endedness in neural networks
Nicholas Guttenberg, Nathaniel Virgo, Alexandra Penn
Natural evolution gives the impression of leading to an open-ended process of increasing diversity and complexity. If our goal is to produce such open-endedness artificially, this…
Direct imaging of molten protoplanets in nearby young stellar associations
Irene Bonati, Tim Lichtenberg, Dan J Bower +2
During their formation and early evolution, rocky planets undergo multiple global melting events due to accretionary collisions with other protoplanets. The detection and character…
Impact bombardment on the regular satellites of Jupiter and Uranus during an episode of giant planet migration
E. W. Wong, R. Brasser, S. C. Werner
The intensity and effects of early impact bombardment on the major satellites of the giant planets during an episode of giant planet migration is still poorly known. We use a combi…
Property of Young Massive Clusters in a Galaxy-Galaxy Merger Remnant
Hidenori Matsui, Ataru Tanikawa, Takayuki R Saitoh
We investigate the properties of young massive clusters (YMCs) in a galaxy-galaxy merger remnant by analyzing the data obtained by a gas rich major merger simulations in Matsui et…
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…
The geological and climatological case for a warmer and wetter early Mars
Ramses M. Ramirez, Robert A. Craddock
The climate of early Mars remains a topic of intense debate. Ancient terrains preserve landscapes consistent with stream channels, lake basins, and possibly even oceans, and thus t…
Enhanced constraints on the interior composition and structure of terrestrial exoplanets
Haiyang S. Wang, Fan Liu, Trevor R. Ireland +3
Exoplanet interior modelling usually makes the assumption that the elemental abundances of a planet are identical to those of its host star. Host stellar abundances are good proxie…
Plausible home stars of the interstellar object 'Oumuamua found in Gaia DR2
C. A. L. Bailer-Jones, D. Farnocchia, K. J. Meech +5
The first detected interstellar object 'Oumuamua that passed within 0.25au of the Sun on 2017 September 9 was presumably ejected from a stellar system. We use its newly determined…
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…
TESS Discovery of a Transiting Super-Earth in the Mensae System
Chelsea X. Huang, Jennifer Burt, Andrew Vanderburg +45
We report the detection of a transiting planet around Mensae (HD 39091), using data from the Transiting Exoplanet Survey Satellite (TESS). The solar-type host star is unusually…
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…
ALMA CO (J=1--0) imaging of the nearby galaxy M83: Variations in the efficiency of star formation in giant molecular clouds
Akihiko Hirota, Fumi Egusa, Junichi Baba +6
We present results of the CO (1--0) mosaic observations of the nearby barred-spiral galaxy M83 obtained with the Atacama Large Millimeter/submillimeter Array (ALMA). The tot…
A more comprehensive habitable zone for finding life on other planets
Ramses M. Ramirez
The habitable zone (HZ) is the circular region around a star(s) where standing bodies of water could exist on the surface of a rocky planet. Space missions employ the HZ to select…
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…
Abundances of ordinary chondrites in thermally evolving planetesimals
S. Wakita, Y. Hasegawa, T. Nozawa
Chondrites are one of the most primitive objects in the solar system, and keep the record of the degree of thermal metamorphism experienced in their parent bodies. This thermal his…
The curious case of Mars formation
Jason Man Yin Woo, Ramon Brasser, Soko Matsumura +2
Dynamical models of planet formation coupled with cosmochemical data from martian meteorites show that Mars' isotopic composition is distinct from that of Earth. Reconciliation of…
Subduction and atmospheric escape of Earth's seawater constrained by hydrogen isotopes
Hiroyuki Kurokawa, Julien Foriel, Matthieu Laneuville +2
The hydrogen isotopic (D/H) ratio reflects the global cycling and evolution of water on Earth as it fractionates through planetary processes. We model the water cycle taking seaflo…
Suppression of atmospheric recycling of planets embedded in a protoplanetary disc by buoyancy barrier
Hiroyuki Kurokawa, Takayuki Tanigawa
The ubiquity of super-Earths poses a problem for planet formation theory to explain how they avoided becoming gas giants. Rapid recycling of the envelope gas of planets embedded in…
Lowest Earth's atmosphere layers probed during a lunar eclipse
Kiyoe Kawauchi, Norio Narita, Bun'ei Sato +5
We report the results of detailed investigation of the Earth's transmission spectra during the lunar eclipse on UT 2011 December 10. The spectra were taken by using the High Disper…
Classification of volcanic ash particles using a convolutional neural network and probability
Daigo Shoji, Rina Noguchi, Shizuka Otsuki +1
Analyses of volcanic ash are typically performed either by qualitatively classifying ash particles by eye or by quantitatively parameterizing its shape and texture. While complex s…
Collisional Disruption of Planetesimals in the Gravity Regime with iSALE Code: Comparison with SPH code for Purely Hydrodynamic Bodies
Ryo Suetsugu, Hidekazu Tanaka, Hiroshi Kobayashi +1
In most of the previous studies related to collisional disruption of planetesimals in the gravity regime, Smoothed Particle Hydrodynamics (SPH) simulations have been used. On the o…
Discovery of a Molecular Collision Front in Interacting Galaxies NGC 4567/4568 with ALMA
Hiroyuki Kaneko, Nario Kuno, Takayuki R. Saitoh
We present results of CO(J = 1-0) imaging observations of NGC 4567/4568, a galaxy pair in a close encounter, with Atacama Large Millimetre/submillimetre Array. For the first…