Results 151 to 160 of about 2,912,496 (265)
An Eccentric Sub-Neptune Moving Into the Evaporation Desert
The Astrophysical Journal LettersThough missions such as Kepler, K2, and TESS have discovered >2000 sub-Neptune and Neptunian planets, there is a dearth of such planets at close-in ( P ≲ 3 days) orbits. This feature, called the Neptune desert or the evaporation desert, is believed to be
Sydney A. Jenkins +33 more
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, 2012 Within the efforts to bring frontline interactive astrophysics and astronomy to the classroom, the Hands on Universe (HOU) developed a set of exercises and platform using real data obtained by some of the most advanced ground and space observatories. The
Almeida, Maria L. T. +11 more
core
The Astronomical JournalExoplanet systems are thought to evolve on secular timescales over billions of years. This evolution is impossible to directly observe on human timescales in most individual systems.
Stephen P. Schmidt +2 more
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Dynamics of exoplanets and exosatellites in binaries
, 2019 This dissertation is the result of the work made under the supervision of J.A. Docobo, Full Professor in Astronomy and Director of the Ramon María Aller Astronomical Observatory of the University of Santiago de Compostela. The core of the dissertation is a compendium of articles published in peer review publications indexed in the Journal Citation ...
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Earth-like exoplanets in spin-orbit resonances: climate dynamics, 3D atmospheric chemistry, and observational signatures [PDF]
Marrick Braam +5 more
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Hot Spot Offset Variability from Magnetohydrodynamical Thermoresistive Instability in Hot Jupiters
The Astrophysical JournalHot Jupiter (HJ) atmospheres are possibly subject to a thermoresistive instability (TRI). Such an instability may develop as the ohmic heating increases the electrical conductivity in a positive feedback loop, which ultimately leads to a runaway of the ...
Raphaël Hardy +2 more
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Planet Mass Function around M Stars at 1–10 au: A Plethora of Sub-Earth Mass Objects
The Astrophysical JournalSmall planets (≲1 M _⊕ ) at intermediate orbital distances (∼1 au) represent an uncharted territory in exoplanetary science. The upcoming microlensing survey by the Nancy Grace Roman Space Telescope will be sensitive to objects as light as Ganymede and ...
Yayaati Chachan, Eve J. Lee
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How Landmass Distribution Influences the Atmospheric Dynamics of Tidally Locked Terrestrial Exoplanets [PDF]
Félix Sainsbury-Martinez +3 more
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Hic Sunt Dracones: Uncovering Dynamical Perturbers within the Habitable Zone
The Astronomical JournalThe continuing exploration of neighboring planetary systems is providing deeper insights into the relative prevalence of various system architectures, particularly with respect to the solar system.
Stephen R. Kane, Jennifer A. Burt
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A Tale of Dynamical Instabilities and Giant Impacts in the Exoplanet Radius Valley
The Astrophysical Journal LettersAbstract The size distribution of planets with radii between 1R ⊕ and 4R ⊕ peaks near 1.4R ⊕ and 2.2R ⊕, with a dip around 1.8R ⊕—the so-called “radius valley.” Recent statistical analyses suggest that planets within this valley (1.5 < R < 2R
Sho Shibata, Andre Izidoro
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