Results 11 to 20 of about 1,107,843 (394)
Science, 1998 A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals remove angular momentum from the planetesimals, increasing their ...
Hansen, Brad +3 more
core +7 more sources
Planet--planet scattering in circumstellar gas disks [PDF]
Astronomy and Astrophysics, 2010 Hydrodynamical simulations of two giant planets embedded in a gaseous disk have shown that in case of a smooth convergent migration they end up trapped into a mean motion resonance.
Baruteau, C., Marzari, F., Scholl, H.
core +6 more sources
Spin Dynamics of Extrasolar Giant Planets in Planet–Planet Scattering [PDF]
The Astrophysical Journal, 2021 Abstract Planet–planet scattering best explains the eccentricity distribution of extrasolar giant planets, and past literature showed that the orbits of planets evolve due to planet–planet scattering. This work studies the spin evolution of planets in planet–planet scattering in two-planet systems.
Yu-Cian Hong +3 more
openaire +3 more sources
Atmosphere loss in planet–planet collisions [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT Many of the planets discovered by the Kepler satellite are close orbiting super-Earths or mini-Neptunes. Such objects exhibit a wide spread of densities for similar masses. One possible explanation for this density spread is giant collisions stripping planets of their atmospheres.
Thomas R Denman +3 more
openaire +4 more sources
Scientific American, 2006 A planet is an end product of disk accretion around a primary star or substar. I quantify this definition by the degree to which a body dominates the other masses that share its orbital zone. Theoretical and observational measures of dynamical dominance reveal a gap of four to five orders of magnitude separating the eight planets of our solar system ...
Steven Soter, Steven Soter
openaire +5 more sources
A terrestrial planet candidate in a temperate orbit around Proxima Centauri [PDF]
Nature, 2016 At a distance of 1.295 parsecs, the red dwarf Proxima Centauri (α Centauri C, GL 551, HIP 70890 or simply Proxima) is the Sun’s closest stellar neighbour and one of the best-studied low-mass stars.
G. Anglada-Escudé +30 more
semanticscholar +1 more source
The Gaia–Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age [PDF]
Astronomical Journal, 2020 Studies of exoplanet demographics require large samples and precise constraints on exoplanet host stars. Using the homogeneous Kepler stellar properties derived using the Gaia Data Release 2 by Berger et al., we recompute Kepler planet radii and incident
T. Berger +4 more
semanticscholar +1 more source
A new family of planets? “Ocean-Planets” [PDF]
Icarus, 2004 A new family of planets is considered which is between rochy terrestrial planets and gaseous giant ones: "Ocean-Planets". We present the possible formation, composition and internal models of these putative planets, including that of their ocean, as well as their possible Exobiology interest.
Leger, A. +11 more
openaire +4 more sources
The California-Kepler Survey. VII. Precise Planet Radii Leveraging Gaia DR2 Reveal the Stellar Mass Dependence of the Planet Radius Gap [PDF]
Astronomical Journal, 2018 The distribution of planet sizes encodes details of planet formation and evolution. We present the most precise planet size distribution to date based on Gaia parallaxes, Kepler photometry, and spectroscopic temperatures from the California-Kepler Survey.
B. Fulton, E. Petigura
semanticscholar +1 more source
A planet within the debris disk around the pre-main sequence star AU Mic [PDF]
Nature, 2020 AU Microscopii (AU Mic) is the second closest pre-main-sequence star, at a distance of 9.79 parsecs and with an age of 22 million years 1 . AU Mic possesses a relatively rare 2 and spatially resolved 3 edge-on debris disk extending from about 35 to 210 ...
P. Plavchan +86 more
semanticscholar +1 more source