Results 31 to 40 of about 378,163 (279)
Advanced Materials, EarlyView.Remote catalytic dehydrogenation enables the direct growth of monolayer amorphous carbon on a 2‐inch sapphire wafer by thermal CVD. Spatial separation of the catalyst from the growth substrate eliminates metallic residue and post‐growth processing, yielding a wafer‐scale uniform film with a random polygonal sp2‐hybridized carbon network that exhibits ...
Muhammad Sabbtain Abbas +8 more
wiley +1 more source
The Astrophysical JournalWe investigate the escape of ionizing (Lyman-continuum (LyC)) photons from 49 star-forming galaxies at redshifts of ∼1–1.5, using far-UV imaging from the Ultra-Violet Imaging Telescope on board AstroSat. The sample spans a wide range of stellar masses ( $
Soumil Maulick, Kanak Saha
doaj +1 more source
Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization
Advanced Materials Interfaces, EarlyView.Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan +6 more
wiley +1 more source
The Astrophysical JournalExtreme ultraviolet (EUV; 100–912 Å) photons influence the formation and evolution of planets by ionizing hydrogen and other species, but the EUV radiation of most exoplanet host stars is poorly constrained.
Girish M. Duvvuri +10 more
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GalaxiesThe galaxy size–mass relation (SMR) is a key scaling relation used to constrain the physical processes that build galaxy structure, yet it is almost always measured in a single rest-frame optical band, where the light traces the bulk of the old stellar ...
Angelo George +2 more
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HAZMAT. IX. An Analysis of the UV and X-Ray Evolution of Low-mass Stars in the Era of Gaia
The Astrophysical Journal, 2023 Low-mass stars (≤1 M _⊙ ) are some of the best candidates for hosting planets with detectable life because of these stars’ long lifetimes and relative ratios of planet to star mass and radius.
Tyler Richey-Yowell +8 more
doaj +1 more source
Effect of Nitrogen Doping on the Proton‐Irradiation Stability of Carbon Nanowalls
Advanced Materials Interfaces, EarlyView.Proton irradiation effects in carbon nanowalls are systematically compared with nitrogen‐doped counterparts over a wide fluence range. While both systems maintain structural integrity, nitrogen incorporation alters the functional response under irradiation.
Baglan A. Kyrykbay +12 more
wiley +1 more source
Escaping Ionizing Photons from Massive Spiral Galaxies at z ∼ 1
The Astrophysical JournalWe report the detection of Lyman continuum (LyC) photons from three massive ( M _* > 10 ^10 M _⊙ ) spiral galaxies at a redshift of nearly 1 in the AstroSat UV Deep Field South.
Soumil Maulick, Kanak Saha
doaj +1 more source
Hot Stars, Young Stellar Populations and Dust with Swift/UVOT
UniverseIn this review, we highlight the contributions made by the Swift/UVOT instrument to the understanding of the ultraviolet (UV) attenuation and extinction properties of interstellar dust and provide insight into hot stars and young stellar populations. The
Michael H. Siegel, Caryl Gronwall
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The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters
The Astrophysical Journal Supplement Series, 2022 The origins of Lyman continuum (LyC) photons responsible for the reionization of the universe are as of yet unknown and highly contested. Detecting LyC photons from the Epoch of Reionization is not possible due to absorption by the intergalactic medium ...
Sophia R. Flury +46 more
doaj +1 more source