Results 1 to 10 of about 24,597,739 (247)
Planetesimal Compositions in Exoplanet Systems [PDF]
The Astrophysical Journal, 2012 We have used recent surveys of the composition of exoplanet host stars to investigate the expected composition of condensed material in planetesimals formed beyond the snow line in the circumstellar nebulae of these systems.
Bockelée-Morvan +26 more
core +8 more sources
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
doaj +4 more sources
Evidence for Low-level Dynamical Excitation in Near-resonant Exoplanet Systems [PDF]
The Astronomical Journal, 2023 The geometries of near-resonant planetary systems offer a relatively pristine window into the initial conditions of exoplanet systems. Given that near-resonant systems have likely experienced minimal dynamical disruptions, the spin–orbit orientations of ...
Malena Rice +20 more
doaj +2 more sources
Testing exoplanet evaporation with multitransiting systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 The photoevaporation model is one of the leading explanations for the evolution of small, close-in planets and the origin of the radius-valley. However, without planet mass measurements, it is challenging to test the photoevaporation scenario.
J. Owen, B. C. Estrada
semanticscholar +7 more sources
Alkaline exospheres of exoplanet systems: evaporative transmission spectra [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 Hydrostatic equilibrium is an excellent approximation for the dense layers of planetary atmospheres where it has been canonically used to interpret transmission spectra of exoplanets.
A. Gebek, A. Oza
semanticscholar +5 more sources
Stability analysis of three exoplanet systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 The orbital solutions of published multiplanet systems are not necessarily dynamically stable on time-scales comparable to the lifetime of the system as a whole. For this reason, dynamical tests of the architectures of proposed exoplanetary systems are a
J. Marshall +4 more
semanticscholar +5 more sources
DEBRIS DISKS IN KEPLER EXOPLANET SYSTEMS [PDF]
The Astrophysical Journal, 2011 The Kepler mission recently identified 997 systems hosting candidate extrasolar planets, many of which are super-Earths. Realizing these planetary systems are candidates to host extrasolar asteroid belts, we use mid-infrared data from the Wide-field ...
S. Lawler, B. Gladman
semanticscholar +4 more sources
The Orbital Geometries and Stellar Obliquities of Exoplanet-hosting Multistar Systems
The Astronomical JournalThe current orbital geometries of exoplanet systems offer a fossilized record of the systems’ dynamical histories. A particularly rich set of dynamical mechanisms is available to exoplanets residing in multistar systems, which may have their evolution ...
Malena Rice +2 more
doaj +2 more sources
Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems [PDF]
, 2006 We present results of a reconnaissance for stellar companions to all 131 radial-velocity-detected candidate extrasolar planetary systems known as of July 1, 2005.
Beaulieu, Thom D. +6 more
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Spectroscopic Follow-up of Gaia Exoplanet Candidates: Impostor Binary Stars Invade the Gaia DR3 Astrometric Exoplanet Candidates [PDF]
The Astronomical Journal, 2023 In this paper, we report on the follow-up of six potential exoplanets detected with Gaia astrometry and provide an overview of what is currently known about the nature of the entire Gaia astrometric exoplanet candidate sample, 72 systems in total.
Marcus L. Marcussen, Simon H. Albrecht
doaj +2 more sources