Results 11 to 20 of about 893,483 (290)
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
Planet-Planet Scattering Alone Cannot Explain the Free-Floating Planet Population [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2012 Recent gravitational microlensing observations predict a vast population of free-floating giant planets that outnumbers main sequence stars almost twofold.
Adams +62 more
core +5 more sources
Tilting Planets during Planet Scattering [PDF]
The Astrophysical Journal Letters, 2021 Abstract Observational constraints on planetary spin axis have recently become possible, and they have revealed a system that favors large spin-axis misalignment, low stellar spin–orbit misalignment, and high eccentricity. To explain the origin of such systems, we propose a mechanism that could tilt the planetary spin axis during planet ...
openaire +2 more sources
Stellar Flybys Interrupting Planet–Planet Scattering Generates Oort Planets [PDF]
The Astronomical Journal, 2019 Abstract Wide-orbit exoplanets are starting to be detected, and planetary formation models are under development to understand their properties. We propose a population of “Oort” planets around other stars, forming by means of a mechanism analogous to how the solar system’s Oort cloud of comets was populated.
Nora Bailey, Daniel Fabrycky
openaire +2 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 +2 more sources
Proceedings of the National Academy of Sciences, 2000 The first known extrasolar planet in orbit around a Sun-like star was discovered in 1995. This object, as well as over two dozen subsequently detected extrasolar planets, were all identified by observing periodic variations of the Doppler shift of light emitted by the stars to which they are bound.
J J, Lissauer, G W, Marcy, S, Ida
openaire +2 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
Specific Analysis of Web Camera and High Resolution Planetary Imaging [PDF]
Journal of Astronomy and Space Sciences, 2006 Web camera is usually used for video communication between PC, it has small sensing area, cannot using long exposure application, so that is insufficient for astronomical application.
Youngsik Park +3 more
doaj +1 more source
Remote Sensing, 2021 We analyzed the Corine Land Cover 2018 (CLC2018) dataset to reveal the correspondence between land cover categories of the CLC and the spectral information of Landsat-8, Sentinel-2 and PlanetScope images.
Orsolya Gyöngyi Varga +7 more
doaj +1 more source
Remote Sensing, 2021 Severe forest disturbance events are becoming more common due to climate change and many forest managers rely heavily upon airborne surveys to map damage.
Sarah A. Wegmueller, Philip A. Townsend
doaj +1 more source