Results 41 to 50 of about 657,244 (303)
AGB Winds with Gas-Dust Drift in Stellar Evolution Codes
Universe, 2021 A significant fraction of new metals produced in stars enter the interstellar medium in the form of dust grains. Including dust and wind formation in stellar evolution models of late-stage low- and intermediate-mass stars provides a way to quantify their
Lars Mattsson, Christer Sandin
doaj +1 more source
Evidence of Surface Catalytic Effect on Cosmic Dust Grain Analogs: The Ammonia and Carbon Dioxide Surface Reaction [PDF]
Astrophysical Journal, 2019 Surface chemistry on cosmic dust grains plays an important role in the formation of molecules at low temperatures in the interstellar and circumstellar environments.
A. Potapov +3 more
semanticscholar +1 more source
Astrophysical Journal Supplement Series, 2020 We present laboratory measurements of the phase functions and degree of linear polarization (DLP) curves of a selection of millimeter-sized cosmic dust analog particles.
O. Muñoz +24 more
semanticscholar +1 more source
Salted Identities: Biocultural Heritage for a Rehumanized Ocean Management in South Africa
Anthropology and Humanism, Volume 47, Issue 2, Page 363-380, December 2022., 2022 SUMMARY In this article, I discuss coastal and oceanic biocultural heritage and its relevance to a transformed perception of the ocean and coast in South Africa. An anthropology of biocultural heritage at the coast reveals the multidimensional nature of personhoods—specifically transspecies, trans‐material forms of personhood—and the rich dialogical ...
Rosabelle Boswell
wiley +1 more source
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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Supernova Dust Evolution Probed by Deep-sea 60Fe Time History
The Astrophysical Journal, 2023 There is a wealth of data on live, undecayed ^60 Fe ( t _1/2 = 2.6 Myr) in deep-sea deposits, the lunar regolith, cosmic rays, and Antarctic snow, which is interpreted as originating from the recent explosions of at least two near-Earth supernovae.
Adrienne F. Ertel +3 more
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Experimentally Derived Luminous Efficiencies for Aluminum and Iron at Meteoric Speeds
Geophysical Research Letters, 2023 Calculating meteoroid masses from photometric observations relies on prior knowledge of the luminous efficiency, a parameter that is not well characterized; reported values vary by several orders of magnitude.
L. K. Tarnecki +4 more
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Lifetimes of interstellar dust from cosmic ray exposure ages of presolar silicon carbide
Proceedings of the National Academy of Sciences of the United States of America, 2020 Significance Dating of interstellar dust directly with astronomical methods is not possible. Neither is dating based on the decay of long-lived radioactive nuclides, due to current analytical limitations and unknown initial isotopic compositions. Here we
P. Heck +9 more
semanticscholar +1 more source
Cosmic rays and space weather: effects on global climate change [PDF]
Annales Geophysicae, 2012 We consider possible effects of cosmic rays and some other space factors on the Earth's climate change. It is well known that the system of internal and external factors formatting the climate is very unstable; decreasing planetary temperature leads ...
L. I. Dorman, L. I. Dorman
doaj +1 more source
The Astrophysical Journal, 2023 We study the morphological properties of mid-infrared selected galaxies at 1.0 < z < 1.7 in the SMACS J0723.3-7327 cluster field to investigate the mechanisms of galaxy mass assembly and structural formation at cosmic noon.
Zhaoran Liu +2 more
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