Results 61 to 70 of about 298 (156)
Warm Jupiter Tidal Migration Can Spare Inner Planets; Hot Jupiter Tidal Migration May Not
The Astrophysical JournalIn this work, we investigate the dynamical survival of short-period inner planets during the high-eccentricity tidal migration of companion exterior giant planets.
Juliette Becker
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Journal of Geophysical Research: Planets, Volume 129, Issue 3, March 2024.Abstract Toroidal atmospheres and exospheres characterized at exoplanets may be fueled by volcanically active exomoons, often referred to as exo‐Ios. We study the neutral outgassing and volatile evolution of a close‐orbiting, evaporating satellite at eight candidate exoplanet‐exomoon systems WASP‐49,‐96,‐69,‐17 b, XO‐2N b, HAT‐P‐1 b, HD‐189733 b, and ...
M. Meyer zu Westram, A. V. Oza, A. Galli
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Are WASP-107-like Systems Consistent with High-eccentricity Migration?
The Astrophysical JournalWASP-107 b seems to be a poster child of the long-suspected high-eccentricity migration scenario. It is on a 5.7 day, polar orbit. The planet is Jupiter-like in radius but Neptune-like in mass with exceptionally low density.
Hang Yu, Fei Dai
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Science Education, Volume 108, Issue 1, Page 332-364, January 2024.Abstract Scientific observation is a disciplinary‐informed way of looking at the world that requires the coordination of domain knowledge and perceptual skills with specialized tools and techniques to systematically identify objects, organisms, specimens, or phenomena of interest.
Marti Louw, Camellia W. Sanford‐Dolly
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The Astronomical JournalThe degree of alignment between a star’s spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution.
Nicholas Saunders +55 more
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The Astrophysical JournalPlanet formation models suggest that the small exoplanets that migrate from beyond the snowline of the protoplanetary disk likely contain water-ice-rich cores (∼50% by mass), also known as water worlds.
Aritra Chakrabarty, Gijs D. Mulders
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The Impact-driven Atmospheric Loss of Super-Earths around Different Spectral Types of Host Stars
The Astrophysical JournalA planet’s mass loss is important for the its formation and evolution. The radius valley (RV) is believed to be triggered by evaporation-induced mass loss.
Wei Zhong +3 more
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The Astrophysical JournalRecent observations have revealed the distribution of orbital period ratios of adjacent planets in multiple super-Earth systems and how these distributions change with time.
Masahiro Ogihara, Masanobu Kunitomo
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The Spin–Orbit Alignment of Eight Warm Gas Giant Systems
The Astronomical JournalEssential information about the formation and evolution of planetary systems can be found in their architectures—in particular, in stellar obliquity ( ψ )—as they serve as a signature of their dynamical evolution. Here we present ESPRESSO observations of
Juan I. Espinoza-Retamal +11 more
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On the Ordering of Exoplanet Systems
The Astrophysical JournalWe present a comprehensive analysis of planetary radius ordering within multiplanet systems, namely their ordinal position with respect to their size in a given system, utilizing data from the NASA Exoplanet Archive. In addition, we consider not only the
Michael Lozovsky, Hagai B. Perets
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