Results 31 to 40 of about 372,210 (210)
Odessa Astronomical Publications, 2020 Cosmic-ray induced γ-ray emission in active galactic nuclei (AGN) has been examined in this study for the first time. Cross-sections for the formation of γ-quanta in such cosmic-ray collisions were selected in the 1-150 MeV energy range.
D. N. Doikov
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Aliphatic hydrocarbon content of interstellar dust [PDF]
Proceedings of the International Astronomical Union, 2018 The mid-IR spectrum of the interstellar medium contains both aromatic and aliphatic hydrocarbon features. These are generally attributed to carbonaceous dust.
B. Günay +8 more
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Interstellar dust within the life cycle of the interstellar medium
EPJ Web of Conferences, 2012 Cosmic dust is omnipresent in the Universe. Its presence influences the evolution of the astronomical objects which in turn modify its physical and chemical properties.
Demyk K.
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dustmaps: A Python interface for maps of interstellar dust
Journal of Open Source Software, 2018 The dustmaps package provides a uniform Python interface for several commonly used maps of interstellar dust, including two-dimensional maps such as Schlegel, Finkbeiner, and Davis (1998), Planck Collaboration et al.
G. Green
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The formation of peptide-like molecules on interstellar dust grains [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Molecules with an amide functional group resemble peptide bonds, the molecular bridges that connect amino acids, and may thus be relevant in processes that lead to the formation of life.
N. Ligterink +6 more
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The Astrophysical Journal, 2023 Dust extinction is one of the fundamental measurements of dust grain sizes, compositions, and shapes. Most of the wavelength-dependent variations seen in Milky Way extinction are strongly correlated with the single parameter R ( V ) = A ( V )/ E ( B − V )
Karl D. Gordon +6 more
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Low temperature MIR to submillimeter mass absorption coefficient of interstellar dust analogues [PDF]
Astronomy & Astrophysics, 2017 A wealth of data from the Herschel and Planck satellites and now from ALMA, revealing cold dust thermal emission, is available for astronomical environments ranging from interstellar clouds, cold clumps, circumstellar envelops, and protoplanetary disks ...
K. Demyk +13 more
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Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? [PDF]
Angew Chem Int Ed EnglA new formation pathway for polycyclic aromatic nitrogen heterocycles (PANHs) has been found. The reaction of phenylnitrene and the propargyl radical leads to quinoline, proving that nitrenes are suitable precursors for nitrogen incorporation mechanisms.
Arns R +6 more
europepmc +2 more sources
Dust in protoplanetary disks: observations*
EPJ Web of Conferences, 2015 Solid particles, usually referred to as dust, are a crucial component of interstellar matter and of planet forming disks surrounding young stars. Despite the relatively small mass fraction of ≈1% (in the solar neighborhood of our galaxy; this number may ...
Waters L.B.F.M.
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Mapping Dust Attenuation and the 2175 Å Bump at Kiloparsec Scales in Nearby Galaxies
The Astrophysical Journal, 2023 We develop a novel approach to measure the dust attenuation properties of galaxies, including the dust opacity, the shape of the attenuation curve, and the strength of the 2175 Å absorption feature.
Shuang Zhou +10 more
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