Results 81 to 90 of about 467 (180)
The Effect of Guide Star Variability on PLATO Pointing Stability
The Astronomical JournalThe main science goal of the PLAnetary Transits and Oscillations of stars (PLATO) is to detect and characterize extrasolar planets, including terrestrial planets in the habitable zone (HZ) of their host stars.
Sam Bowling +8 more
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Unveiling the Interior Structure and Thermal Evolution of Super-Earth GJ 486b
The Astrophysical JournalRecent ground- and space-based surveys have shown that planets between Earth and Neptune in size, known as “super-Earths,” are among the most frequently found planets in the Galaxy. Although the JWST era has provided high-quality atmospheric data on many
Chandan K. Sahu +3 more
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Accelerating Giant-impact Simulations with Machine Learning
The Astrophysical JournalConstraining planet-formation models based on the observed exoplanet population requires generating large samples of synthetic planetary systems, which can be computationally prohibitive.
Caleb Lammers +5 more
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Formation of Giant Planets and Brown Dwarves [PDF]
, 2003 According to the prevailing core instability model, giant planets begin their growth by the accumulation of small solid bodies, as do terrestrial planets. However, unlike terrestrial planets, the growing giant planet cores become massive enough that they
Lissauer, Jack J.
core +1 more source
The Persistent Thermal Anomalies in Rocky Worlds
The Astrophysical JournalObserving the dayside thermal emissions of rocky exoplanets provides essential insights into their compositions and the presence of atmospheres. Even though no conclusive evidence has been found for atmospheres on small rocky exoplanets orbiting M dwarfs,
Zifan Lin, Tansu Daylan
doaj +1 more source
GEODYNAMICS AND RATE OF VOLCANISM ON MASSIVE EARTH-LIKE PLANETS [PDF]
, 2009 We provide estimates of volcanism versus time for planets with Earth-like composition and masses 0.25–25 M⊕, as a step toward predicting atmospheric mass on extrasolar rocky planets. Volcanism requires melting of the silicate mantle.
E. S. Kite, M. Manga, E. Gaidos
core
JWST TRAPPIST-1 e/b Program: Motivation and First Observations
The Astronomical JournalOne of the forefront goals in the field of exoplanets is the detection of an atmosphere on a temperate terrestrial exoplanet, and among the best suited systems to do so is TRAPPIST-1.
Natalie H. Allen +26 more
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No Thick Atmosphere on the Terrestrial Exoplanet Gl 486b
The Astrophysical Journal LettersA primary science goal for JWST is to detect and characterize the atmospheres of terrestrial planets orbiting M dwarfs (M-Earths). The existence of atmospheres on M-Earths is highly uncertain because their host stars’ extended history of high X-ray and ...
Megan Weiner Mansfield +10 more
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Interior structure models and fluid Love numbers of exoplanets in the super-Earth regime [PDF]
, 2018 Space missions such as CoRoT and Kepler have made the transit method the most successful technique in observing extrasolar planets. However, although the mean density of a planet can be derived from its measured mass and radius, no details about its ...
A. Becker, C. Kellermann, R. Redmer
core +1 more source
Validation of a Third Earth-sized Planet in the TOI-2267 Binary System
The Astronomical JournalWe report the validation of a third terrestrial exoplanet in the nearby (22 pc) TOI-2267 system. TOI-2267 is a binary system with stellar components TOI-2267A (M5, 3030 K) and TOI-2267B (M6, 2930 K), with an on-sky separation of 0 $\mathop{.}\limits ...
Michael Greklek-McKeon +15 more
doaj +1 more source