Results 1 to 10 of about 37,732 (195)
Meteorites and cosmic dust: Interstellar heritage and nebular processes in the early solar system [PDF]
EPJ Web of Conferences, 2012 Small solar system bodies like asteroids and comets have escaped planetary accretion. They are the oldest and best preserved witnesses of the formation of the solar system.
Engrand C.
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Supernova induced processing of interstellar dust: impact of interstellar medium gas density and gas turbulence [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Quantifying the efficiency of dust destruction in the interstellar medium (ISM) due to supernovae (SNe) is crucial for the understanding of galactic dust evolution. We present 3D hydrodynamic simulations of an SN blast wave propagating through the ISM.
Florian Kirchschlager +2 more
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Mapping interstellar dust with Gaussian processes
The Annals of Applied Statistics, 2022 Interstellar dust corrupts nearly every stellar observation, and accounting for it is crucial to measuring physical properties of stars. We model the dust distribution as a spatially varying latent field with a Gaussian process (GP) and develop a likelihood model and inference method that scales to millions of astronomical observations.
Miller, Andrew C. +5 more
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Frontiers in Astronomy and Space Sciences, 2022 Modern understanding of dust astrophysics reveals that radiative torques (RATs) arising from the radiation–dust interaction can induce two fundamental effects: grain alignment and rotational disruption.
Le Ngoc Tram, Thiem Hoang, Thiem Hoang
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Dust evolution, a global view: III. Core/mantle grains, organic nano-globules, comets and surface chemistry [PDF]
Royal Society Open Science, 2016 Within the framework of The Heterogeneous dust Evolution Model for Interstellar Solids (THEMIS), this work explores the surface processes and chemistry relating to core/mantle interstellar and cometary grain structures and their influence on the nature ...
A. P. Jones
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Dust as interstellar catalyst [PDF]
Astronomy & Astrophysics, 2015 Context. The presence of dust in the interstellar medium has profound consequences on the chemical composition of regions where stars are forming. Recent observations show that many species formed onto dust are populating the gas phase, especially in cold environments where UV and CR induced photons do not account for such processes. Aims.
Minissale, M. +3 more
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PROCESSING OF INTERSTELLAR DUST GRAINS IN GALAXIES [PDF]
Publications of The Korean Astronomical Society, 2012 We have performed a systematic study of interstellar dust grains in various environments of galaxies. AKARI has revealed the detailed properties of dust grains not only in star-forming regions but also in regions not relevant to star formation, some of which are found not to follow our old empirical knowledge.
H. Kaneda +8 more
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Material Processing of Interstellar Dust in Comets [PDF]
Highlights of Astronomy, 2005 AbstractTo better understand the processing of pristine materials in comets, we compare the composition of cometary and interstellar dust. We suggest that the deficit of N in comet dust bears evidence for the processing of the organic refractory mantle of pre-solar interstellar dust, unless it arises from the protosolar disk chemistry.
Hiroshi Kimura, Ingrid Mann
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Determination of the Branching Ratio of CH3OH + OH Reaction on Water Ice Surface at 10 K
The Astrophysical Journal, 2023 The CH _3 O and CH _2 OH radicals can be important precursors of complex organic molecules (COMs) in interstellar dust. The COMs presumably originating from these radicals were abundantly found in various astronomical objects.
Atsuki Ishibashi +4 more
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Plasma generation and processing of interstellar carbonaceous dust analogs [PDF]
Plasma Sources Science and Technology, 2018 Interstellar (IS) dust analogs, based on amorphous hydrogenated carbon (a-C:H) were generated by plasma deposition in RF discharges of CH4 + He mixtures. The a-C:H samples were characterized by means of secondary electron microscopy (SEM), infrared (IR) spectroscopy and UV-visible reflectivity.
R J Peláez +7 more
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