Results 21 to 30 of about 22,321,491 (359)
Earth, Planets and Space, 2023 We report the first experiments, where simultaneous electrical resistivity and elastic wave velocity measurements are acquired during the triaxial deformation of granite under brine-saturated conditions.
Ikuo Katayama +4 more
doaj +1 more source
Universe, 2021 The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang +4 more
doaj +1 more source
Machines, 2023 Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such ...
Bingwei Gao, Yongkang Wang, Guangbin Yu
doaj +1 more source
Planetary Systems Biology [PDF]
Molecular Cell, 2005 Combining paleogenetics, protein engineering, synthetic biology, and metabolic modeling, a planetary biology perspective is brought to bear on adaptive evolutionary events in ancient bacteria.
Department of Chemistry, University of Florida, Gainesville, FL 32611 USA ( host institution ) +2 more
openaire +4 more sources
About 30% of Sun-like Stars Have Kepler-like Planetary Systems: A Study of Their Intrinsic Architecture [PDF]
Astrophysical Journal, 2018 We constrain the intrinsic architecture of Kepler planetary systems by modeling the observed multiplicities of the transiting planets (tranets) and their transit timing variations (TTVs).
W. Zhu 祝 +4 more
semanticscholar +1 more source
The (In)stability of Planetary Systems [PDF]
The Astrophysical Journal, 2004 37 pages, 49 figures, 13 tables, submitted to ...
Rory Barnes, Thomas R. Quinn
openaire +3 more sources
The path to instability in compact multi-planetary systems
Astronomy & Astrophysics, 2020 The dynamical stability of tightly packed exoplanetary systems remains poorly understood. While a sharp stability boundary exists for a two-planet system, numerical simulations of three-planet systems and higher show that they can experience instability ...
A. Petit +3 more
semanticscholar +1 more source
The Exoplanet Population Observation Simulator. I. The Inner Edges of Planetary Systems [PDF]
Astronomical Journal, 2018 The Kepler survey provides a statistical census of planetary systems out to the habitable zone. Because most planets are non-transiting, orbital architectures are best estimated using simulated observations of ensemble populations.
G. Mulders +3 more
semanticscholar +1 more source
Formation of planetary systems by pebble accretion and migration [PDF]
Astronomy & Astrophysics, 2018 At least 30% of main sequence stars host planets with sizes of between 1 and 4 Earth radii and orbital periods of less than 100 days. We use N-body simulations including a model for gas-assisted pebble accretion and disk–planet tidal interaction to study
B. Bitsch +6 more
semanticscholar +1 more source
Universe, 2018 The microlensing technique is a unique method to hunt for cold planets over a range of mass and separation, orbiting all varieties of host stars in the disk of our galaxy.
Jean-Philippe Beaulieu
doaj +1 more source