Results 141 to 150 of about 506,065 (397)
Combining high-dispersion spectroscopy with high contrast imaging : Probing rocky planets around our nearest neighbors [PDF]
, 2015 Context. Ground-based high-dispersion (R 100,000) spectroscopy (HDS) is proving to be a powerful technique with which to characterize extrasolar planets.
I. Snellen +8 more
semanticscholar +1 more source
The Intra-Mercurial Planet Or Planets [PDF]
Nature, 1876 THE question of the existence of one or more planetary bodies revolving within the orbit of Mercury is again revived by Weber's observation of a round black spot just within the sun's eastern limb, on the afternoon of April 4 in the present year which had not been visible on the same morning, and early on the following day had disappeared. The position
openaire +2 more sources
Stellar Flybys Interrupting Planet–Planet Scattering Generates Oort Planets [PDF]
The Astronomical Journal, 2019 Abstract Wide-orbit exoplanets are starting to be detected, and planetary formation models are under development to understand their properties. We propose a population of “Oort” planets around other stars, forming by means of a mechanism analogous to how the solar system’s Oort cloud of comets was populated.
Nora Bailey, Daniel Fabrycky
openaire +3 more sources
Advanced Functional Materials, EarlyView.This study demonstrates the use of a low‐cost 3D printing technique to prepare a large‐area PVDF‐FAPbI3 composite dielectric film for flexible TENG application. The δ→α phase transformation of the FAPbI3 nanofillers has significantly improved the β‐phase content, morphology, and dielectric properties of the PVDF film.
Nurfatin Hafizah Zain Karimy +7 more
wiley +1 more source
Evidence for the oxidation of Earth’s crust from the evolution of manganese minerals
Nature Communications, 2022 The co-evolution of oxygenation of the Earth’s atmosphere and lithosphere is still poorly constrained. However, the oxidation state of manganese minerals reveals that the redox state of Earth’s crust responds to changes in atmospheric oxygen following a ~
Daniel R. Hummer +9 more
doaj +1 more source
The Occurrence Rate of Small Planets around Small Stars [PDF]
, 2013 We use the optical and near-infrared photometry from the Kepler Input Catalog to provide improved estimates of the stellar characteristics of the smallest stars in the Kepler target list. We find 3897 dwarfs with temperatures below 4000K, including 64 planet candidate host stars orbited by 95 transiting planet candidates. We refit the transit events in
arxiv +1 more source
On the Survivability and Metamorphism of Tidally Disrupted Giant Planets: the Role of Dense Cores
, 2012 A large population of planetary candidates in short-period orbits have been found through transit searches. Radial velocity surveys have also revealed several Jupiter-mass planets with highly eccentric orbits.
Guillochon, James +3 more
core +1 more source
ZODIACAL EXOPLANETS IN TIME (ZEIT). IV. SEVEN TRANSITING PLANETS IN THE PRAESEPE CLUSTER [PDF]
, 2016 Open clusters and young stellar associations are attractive sites to search for planets and to test theories of planet formation, migration, and evolution. We present our search for, and characterization of, transiting planets in the 800 Myr old Praesepe
A. Mann +8 more
semanticscholar +1 more source
Active Learning‐Driven Discovery of Sub‐2 Nm High‐Entropy Nanocatalysts for Alkaline Water Splitting
Advanced Functional Materials, EarlyView.High‐entropy nanoparticles (HENPs) hold great promise for electrocatalysis, yet optimizing their compositions remains challenging. This study employs active learning and Bayesian Optimization to accelerate the discovery of octonary HENPs for hydrogen and oxygen evolution reactions.
Sakthivel Perumal +5 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Tracer methods are widespread in computational geodynamics for modeling the advection of chemical data. However, they present certain numerical challenges, especially when used over long periods of simulation time.
Nathan Sime +3 more
doaj +1 more source