Results 31 to 40 of about 304,444 (325)
Exoplanets: Past, Present, and Future
Galaxies, 2018 Our understanding of extra-solar planet systems is highly driven by advances in observations in the past decade. Thanks to high precision spectrographs, we are able to reveal unseen companions to stars with the radial velocity method.
Chien-Hsiu Lee
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Planetary systems in star clusters [PDF]
Proceedings of the International Astronomical Union, 2014 AbstractIn the solar neighborhood, where the typical relaxation timescale is larger than the cosmic age, at least 10% to 15% of Sun-like stars have planetary systems with Jupiter-mass planets. In contrast, dense star clusters, characterized by frequent close encounters, have been found to host very few planets.
Kouwenhoven, M.B.N. +3 more
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Heavy Metal Rules. I. Exoplanet Incidence and Metallicity
Geosciences, 2019 The discovery of only a handful of exoplanets required establishing a correlation between giant planet occurrence and metallicity of their host stars.
Vardan Adibekyan
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Widespread reworking of Hadean-to-Eoarchean continents during Earth’s thermal peak
Nature Communications, 2021 The nature and evolution of Earth’s crust during the Hadean and Eoarchean is largely unknown due to the lack of preserved material from this period. Here, the authors document a period of crustal rejuvenation between 3.2 and 3.0 Ga, coincident with peak ...
C. L. Kirkland +5 more
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A natural formation scenario for misaligned and short-period eccentric extrasolar planets [PDF]
, 2011 Recent discoveries of strongly misaligned transiting exoplanets pose a challenge to the established planet formation theory which assumes planetary systems to form and evolve in isolation.
A. P. Whitworth +39 more
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Planets, Planetary Nebulae, and Intermediate Luminosity Optical Transients (ILOTs)
Galaxies, 2018 I review some aspects related to the influence of planets on the evolution of stars before and beyond the main sequence. Some processes include the tidal destruction of a planet on to a very young main sequence star, on to a low-mass main sequence star ...
Noam Soker
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The Detection and Characterization of Extrasolar Planets
Challenges, 2014 We have now confirmed the existence of > 1800 planets orbiting stars other thanthe Sun; known as extrasolar planets or exoplanets. The different methods for detectingsuch planets are sensitive to different regions of parameter space, and so, we are ...
Ken Rice
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The Gaia Astrometric Survey [PDF]
, 2009 In its all-sky survey, the ESA global astrometry mission Gaia will perform high-precision astrometry and photometry for 1 billion stars down to $V = 20$ mag.
Alessandro Sozzetti, Casertano, Perryman
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Machines, 2023 Mesh phasing has a dramatic impact on the static and dynamic behaviours of planetary gear systems. This research investigates the coupled phase-tuning mechanism of two-stage planetary gear systems and the corresponding relationship with the coupled ...
Pengfei Yan +4 more
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Does Zircon Shape Retain Petrogenetic Information?
Geochemistry, Geophysics, Geosystems, 2023 Zircon shape is commonly reported during geochronology and geochemistry analyses of igneous, metamorphic, and sedimentary rocks, but the relationship of zircon shape to primary growth environmental conditions remains poorly constrained.
T. Scharf +4 more
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