Results 41 to 50 of about 224,941 (332)

$Spitzer$ Parallax of OGLE-2018-BLG-0596: A Low-mass-ratio Planet around an M-dwarf

open access: yes, 2019
We report the discovery of a $Spitzer$ microlensing planet OGLE-2018-BLG-0596Lb, with preferred planet-host mass ratio $q \sim 2\times10^{-4}$. The planetary signal, which is characterized by a short $(\sim 1~{\rm day})$ "bump" on the rising side of the ...
Abe, Fumio   +68 more
core   +2 more sources

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach   +6 more
wiley   +1 more source

FindPOTATOs: Minor Planet Observation Linking Software

open access: yesThe Planetary Science Journal
For minor planet observations to be archived and used by the scientific community, observations of individual objects must be linked together into groups called tracklets.
C. R. Nugent   +2 more
doaj   +1 more source

Constraints on Evolutionary Timescales for M Dwarf Planets from Dynamical Stability Arguments

open access: yesThe Astrophysical Journal, 2023
The diversity of dynamical conditions among exoplanets is now well established. Yet, the relevance of orbital dynamical timescales to biological evolutionary timescales is poorly understood.
Katie Teixeira, Sarah Ballard
doaj   +1 more source

In Situ Formation of a Melt‐Solid Interface Toward Stable Oxygen Reduction in Protonic Ceramic Fuel Cells

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng   +14 more
wiley   +1 more source

Tracing Planets in Circumstellar Discs

open access: yesEPJ Web of Conferences, 2013
Planets are assumed to form in circumstellar discs around young stellar objects. The additional gravitational potential of a planet perturbs the disc and leads to characteristic structures, i.e. spiral waves and gaps, in the disc density profile.
Uribe Ana L.   +3 more
doaj   +1 more source

Determination of Orbital Elements and Ephemerides using the Geocentric Laplace’s Method

open access: yesJournal of Astronomy and Space Sciences, 2020
This paper presents a methodology for Initial Orbit Determination (IOD) based on a modification of the Laplace’s geocentric method. The orbital elements for Near-Earth asteroids (1864) Daedalus, 2003 GW, 2019 JA8, a Hungaria-type asteroid (4690 ...
Daniela Espitia   +2 more
doaj   +1 more source

Minor Planet 2008 ED69 and the Kappa Cygnid Meteor Shower [PDF]

open access: yes, 2008
Until recently, the kappa Cygnids (IAU#12) were considered an old shower, because the meteors were significantly dispersed in node, radiant, and speed, despite being 28-38° inclined.
Jenniskens, P., Vaubaillon, J.
core   +2 more sources

Highly Efficient 3D‐Printed PVDF‐Based Triboelectric Nanogenerators Featuring Polymorphic Perovskite Nanofillers

open access: yesAdvanced 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

Circularizing Planet Nine through dynamical friction with an extended, cold planetesimal belt

open access: yes, 2018
Unexpected clustering in the orbital elements of minor bodies beyond the Kuiper belt has led to speculations that our solar system actually hosts nine planets, the eight established plus a hypothetical "Planet Nine".
Eriksson, Linn E. J.   +2 more
core   +1 more source

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