Results 61 to 70 of about 282,229 (301)
Mass loss from central stars of planetary nebulae [PDF]
International Astronomical Union Colloquium, 1981 AbstractFrom a high resolution spectrum taken with IUE, the central star of the planetary nebula IC 2149 is found to exibit a wind with edge velocity of 1440 ± 100 km s-1. Our preliminary evaluation of the associated mass loss rate gives 10-8 M0 yr-1. Other planetary nebulae nuclei are studied with low resolution IUE spectra and indications are found ...
M. Perinotto +2 more
openaire +2 more sources
3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries
Advanced Functional Materials, EarlyView.Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling +7 more
wiley +1 more source
The Astrophysical JournalAge-benchmark brown dwarf and planetary-mass-object spectroscopy is key to characterizing substellar evolution. In this paper, we present the JHK medium-resolution ( R ∼ 3000) spectra of 25 7–76 M _Jup (spectral types L3.0–M6.0) brown dwarfs and ...
Elena Manjavacas +5 more
doaj +1 more source
Disruption of Planetary System Architectures by Stellar Flybys
UniverseWe investigate the survivability of solar system-like planetary systems during close encounters in stellar associations using a suite of 1980 N-body simulations.
Robert Przyłuski +9 more
doaj +1 more source
Formation and composition of planets around very low mass stars
, 2016 The recent detection of planets around very low mass stars raises the question of the formation, composition and potential habitability of these objects.
Alibert, Yann, Benz, Willy
core +1 more source
Multiscale Structuring of Hydroxyapatite via Two‐Photon Lithography of Nanocomposites
Advanced Functional Materials, EarlyView.Hydroxyapatite scaffolds are of great interest in bone tissue engineering applications, ranging from 3D cell culture to regenerative medicine. Using two‐photon lithography of a transparent nanocomposite, hydroxyapatite microstructures with features ranging from submicron to centimeter‐scale are fabricated. This allows to mimic the natural bone geometry,
Leonhard Hambitzer +6 more
wiley +1 more source
Metallicity Regulates Planet Formation across All Masses
The Astronomical JournalThe role of stellar metallicity in shaping planetary systems is central to our understanding of planet formation. While the core accretion paradigm is widely accepted as the dominant mechanism for forming low- and intermediate-mass planets, the origin of
Max Nguyen, Vardan Adibekyan
doaj +1 more source
Quantifying the Key Factors Affecting the Escape of Planetary Atmospheres
The Astrophysical Journal, 2023 The habitability of Earth-like planets is an increasingly important subject in astrophysics and in planetary sciences. Atmospheric escape plays a vital role in the evolution of the habitability of Earth-like planets.
J. Luo, H.-Q. He, G.-S. Tong, Jiao Li
doaj +1 more source
Two Wide Planetary-mass Companions to Solar-type Stars in Upper Scorpius [PDF]
, 2011 At wide separations, planetary-mass and brown dwarf companions to solar-type stars occupy a curious region of parameter space not obviously linked to binary star formation or solar system scale planet formation.
Hillenbrand, L. A. +4 more
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