Results 21 to 30 of about 26,344 (179)

Occurrence and core-envelope structure of 1--4x Earth-size planets around Sun-like stars [PDF]

, 2014
Small planets, 1-4x the size of Earth, are extremely common around Sun-like stars, and surprisingly so, as they are missing in our solar system. Recent detections have yielded enough information about this class of exoplanets to begin characterizing ...
Buchhave, Lars A., Howard, Andrew W., Isaacson, Howard, Marcy, Geoffrey W., Petigura, Erik A., Weiss, Lauren M.   +5 more
core   +2 more sources

Tidal Dissipation in Stably Stratified and Semiconvective Regions of Rotating Giant Planets: Incorporating Coriolis Forces

The Astrophysical Journal, 2023
We study how stably stratified or semiconvective layers alter tidal dissipation rates associated with the generation of inertial, gravito-inertial, interfacial, and surface gravity waves in rotating giant planets.
Christina M. Pontin, Adrian J. Barker, Rainer Hollerbach   +2 more
doaj   +1 more source

Constraining the presence of giant planets in two-belt debris disk systems with VLT/SPHERE direct imaging and dynamical arguments [PDF]

, 2018
Giant, wide-separation planets often lie in the gap between multiple, distinct rings of circumstellar debris: this is the case for the HR 8799 and HD 95086 systems, and even the solar system where the Asteroid and Kuiper belts enclose the four gas and ...
David, Trevor, Hinkley, Sasha, Kennedy, Grant M., Matthews, Elisabeth, Mawet, Dimitri, Meshkat, Tiffany, Morales, Farisa, Shannon, Andrew, Stapelfeldt, Karl, Sutlieff, Ben, Treves, Sam, Vigan, Arthur, Wickenden, Dawn   +12 more
core   +4 more sources

Ultracool Dwarfs Observed with the Spitzer Infrared Spectrograph: Equatorial Latitudes in L Dwarf Atmospheres Are Cloudier

The Astrophysical Journal Letters, 2023
We report direct observational evidence for a latitudinal dependence of dust cloud opacity in ultracool dwarfs, indicating that equatorial latitudes are cloudier than polar latitudes.
Genaro Suárez, Johanna M. Vos, Stanimir Metchev, Jacqueline K. Faherty, Kelle Cruz   +4 more
doaj   +1 more source

Experimental Design for the Gemini Planet Imager

, 2011
The Gemini Planet Imager (GPI) is a high performance adaptive optics system being designed and built for the Gemini Observatory. GPI is optimized for high contrast imaging, combining precise and accurate wavefront control, diffraction suppression, and a ...
Bruce Macintosh, Christian Marois, Graham J. R., Graham J. R., James McBride, James R. Graham, Lisa A. Poyneer, Liu M. C., Lynden-Bell D., Mayor M., Mihalas D., Sloane J. Wiktorowicz, Steven V. W. Beckwith   +12 more
core   +1 more source

CRIRES+ and ESPRESSO Reveal an Atmosphere Enriched in Volatiles Relative to Refractories on the Ultrahot Jupiter WASP-121b

The Astronomical Journal
One of the outstanding goals of the planetary science community is to measure the present-day atmospheric composition of planets and link this back to formation.
Stefan Pelletier, Björn Benneke, Yayaati Chachan, Luc Bazinet, Romain Allart, H. Jens Hoeijmakers, Alexis Lavail, Bibiana Prinoth, Louis-Philippe Coulombe, Joshua D. Lothringer, Vivien Parmentier, Peter Smith, Nicholas Borsato, Brian Thorsbro   +13 more
doaj   +1 more source

Beyond Climate Security: Reframing the Climate‐War Nexus Through Bataille's General Economy

Antipode, EarlyView.
Abstract The spectre of resource scarcity as a cause of war is dominant in discussions about potential links between climate change and armed conflict. Via engagement with Georges Bataille's theory of a general economy of the biosphere, this article conceptualises the relationship between climate change and war by focusing on resource excess as a ...
Gitte du Plessis
wiley   +1 more source

A Resonant Beginning for the Solar System’s Terrestrial Planets

The Astrophysical Journal
In the past two decades, transit surveys have revealed a class of planets with thick atmospheres—sub-Neptunes—that must have completed their accretion in protoplanet disks.
Shuo Huang, Chris W. Ormel, Simon Portegies Zwart, Eiichiro Kokubo, Tian Yi   +4 more
doaj   +1 more source

Tidal Dissipation in Stratified and Semi-convective Regions of Giant Planets

The Astrophysical Journal, 2023
We study how stably stratified or semi-convective layers alter the tidal dissipation rates associated with the generation of internal waves in planetary interiors.
Christina M. Pontin, Adrian J. Barker, Rainer Hollerbach   +2 more
doaj   +1 more source

Final Masses of Giant Planets II: Jupiter Formation in a Gas-Depleted Disk

, 2015
Firstly, we study the final masses of giant planets growing in protoplanetary disks through capture of disk gas, by employing an empirical formula for the gas capture rate and a shallow disk gap model, which are both based on hydrodynamical simulations ...
Tanaka, Hidekazu, Tanigawa, Takayuki
core   +1 more source