Results 41 to 50 of about 22,321,491 (359)

Survival of non-coplanar, closely packed planetary systems after a close encounter [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Planetary systems with more than two bodies will experience orbital crossings at a time related to the initial orbital separations of the planets. After a crossing, the system enters a period of chaotic evolution ending in the reshaping of the system's ...
D. Rice, F. Rasio, J. Steffen
semanticscholar   +1 more source

Microlensing Searches for Exoplanets

open access: yesGeosciences, 2018
Gravitational microlensing finds planets through their gravitational influence on the light coming from a more distant background star. The presence of the planet is then inferred from the tell-tale brightness variations of the background star during the
Yiannis Tsapras
doaj   +1 more source

Paleo‐Permeability Structure of the Crustal Section of the Samail Ophiolite Based on Automated Detection of Veins in X‐Ray CT Core Images From the Oman Drilling Project

open access: yesGeochemistry, Geophysics, Geosystems, 2023
To assess the paleo‐permeability structure of oceanic crust, we used 3‐D X‐ray Computed Tomography (XCT) images to quantify the distribution and geometry of mineral veins in core samples from Oman Drilling Project Holes GT1A, GT2A, and GT3A, which ...
Y. Akamatsu   +3 more
doaj   +1 more source

How Do Disks and Planetary Systems in High-mass Open Clusters Differ from Those around Field Stars? [PDF]

open access: yesAstrophysical Journal, 2018
Only star clusters that are sufficiently compact and massive survive largely unharmed beyond 10 . However, their compactness means a high stellar density, which can lead to strong gravitational interactions between the stars.
K. Vincke, S. Pfalzner
semanticscholar   +1 more source

Planetary mass function and planetary systems [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2010
7 pages, MNRAS ...
openaire   +4 more sources

Exoplanet Predictions Based on Harmonic Orbit Resonances

open access: yesGalaxies, 2017
The current exoplanet database includes 5454 confirmed and candidate planets observed with the Kepler mission. We find 932 planet pairs from which we extract distance and orbital period ratios.
Markus J. Aschwanden, Felix Scholkmann
doaj   +1 more source

The Deuterium Isotopic Ratio of Water Released From the Martian Caps as Measured With TGO/NOMAD

open access: yesGeophysical Research Letters, 2022
We report vertical profiles of water and D/H for one Martian year as measured with the TGO/NOMAD instrument. The observations were performed via solar occultation, providing water profiles up to ∼100 km and D/H up to ∼60 km, with a vertical resolution of
Geronimo L. Villanueva   +20 more
doaj   +1 more source

Planetary systems in star clusters [PDF]

open access: yesProceedings 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
openaire   +6 more sources

Carbonate clumped isotope thermometry of fault rocks and its possibilities: tectonic implications from calcites within Himalayan Frontal Fold-Thrust Belt

open access: yesProgress in Earth and Planetary Science, 2021
Disentangling the temperature and depth of formation of fault rocks is critical for understanding their rheology, exhumation, and the evolution of fault zones.
Dyuti Prakash Sarkar   +5 more
doaj   +1 more source

THE IMPACT OF STELLAR MULTIPLICITY ON PLANETARY SYSTEMS. I. THE RUINOUS INFLUENCE OF CLOSE BINARY COMPANIONS [PDF]

open access: yes, 2016
The dynamical influence of binary companions is expected to profoundly influence planetary systems. However, the difficulty of identifying planets in binary systems has left the magnitude of this effect uncertain; despite numerous theoretical hurdles to ...
A. Kraus   +4 more
semanticscholar   +1 more source

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