Results 121 to 130 of about 8,194 (235)

A Comprehensive Analysis of Spitzer 4.5 μm Phase Curves of Hot Jupiters

open access: yesThe Astronomical Journal
Although exoplanetary science was not initially projected to be a substantial part of the Spitzer mission, its exoplanet observations set the stage for current and future surveys with JWST and Ariel.
Lisa Dang   +21 more
doaj   +1 more source

Astro2020 Project White Paper: The Cosmic Accelerometer [PDF]

open access: yes, 2019
We propose an experiment, the Cosmic Accelerometer, designed to yield velocity precision of $\leq 1$ cm/s with measurement stability over years to decades.
Bentz, Misty   +17 more
core   +1 more source

Resonant and Ultra-short-period Planet Systems Are at Opposite Ends of the Exoplanet Age Distribution

open access: yesThe Astronomical Journal
Exoplanet 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
doaj   +1 more source

Dependence of Planet Populations on Stellar Mass and Metallicity: A Pebble-accretion-based Planet Population Synthesis Model

open access: yesThe Astrophysical Journal
The formation and evolution of planetary systems are linked to their host stellar environment. In this study, we employ a pebble-accretion-based planet population synthesis model to explore the correlation between planetary properties and stellar mass ...
Mengrui Pan   +5 more
doaj   +1 more source

Hot Spot Offset Variability from Magnetohydrodynamical Thermoresistive Instability in Hot Jupiters

open access: yesThe Astrophysical Journal
Hot 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
doaj   +1 more source

Hic Sunt Dracones: Uncovering Dynamical Perturbers within the Habitable Zone

open access: yesThe Astronomical Journal
The 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
doaj   +1 more source

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