Lifetimes of interstellar dust from cosmic ray exposure ages of presolar silicon carbide [PDF]
Proc Natl Acad Sci U S A, 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 +2 more sources
Express assessment of neurotoxicity of particles of planetary and interstellar dust [PDF]
NPJ Microgravity, 2019 Establishment of high-quality, consistent on-board assessment of the neurotoxicity of planetary, and interstellar dust particles will be required to predict their potential threat to human health during long-term space missions.
T. Borisova
semanticscholar +2 more sources
IRON: A KEY ELEMENT FOR UNDERSTANDING THE ORIGIN AND EVOLUTION OF INTERSTELLAR DUST [PDF]
Astrophys J, 2016 The origin and depletion of iron differ from all other abundant refractory elements that make up the composition of interstellar dust. Iron is primarily synthesized in Type Ia supernovae (SNe Ia) and in core collapse supernovae (CCSN), and is present in ...
E. Dwek
semanticscholar +2 more sources
Dust Emission in Galaxies at Millimeter Wavelengths: Cooling of star forming regions in NGC6946 [PDF]
EPJ Web of Conferences, 2022 Interstellar dust plays an important role in the formation of molecular gas and the heating and cooling of the interstellar medium. The spatial distribution of the mm-wavelength dust emission from galaxies is largely unexplored. The NIKA2 Guaranteed Time
Ejlali G. +56 more
doaj +1 more source
Updated Gaia-2MASS 3D maps of Galactic interstellar dust [PDF]
Astronomy & Astrophysics, 2022 Three-dimensional (3D) maps of Galactic interstellar dust are a tool for a wide range of uses. We aim to construct 3D maps of dust extinction in the Local Arm and surrounding regions.
R. Lallement +3 more
semanticscholar +1 more source
The Astrodust+PAH Model: A Unified Description of the Extinction, Emission, and Polarization from Dust in the Diffuse Interstellar Medium [PDF]
Astrophysical Journal, 2022 We present a new model of interstellar dust in which large grains are a single composite material, “astrodust,” and nanoparticle-sized grains come in distinct varieties including polycyclic aromatic hydrocarbons (PAHs). We argue that a single-composition
B. Hensley, B. Draine
semanticscholar +1 more source
Observational Constraints on the Physical Properties of Interstellar Dust in the Post-Planck Era [PDF]
Astrophysical Journal, 2020 We present a synthesis of the astronomical observations constraining the wavelength-dependent extinction, emission, and polarization from interstellar dust from UV to microwave wavelengths on diffuse Galactic sight lines.
B. Hensley, B. Draine
semanticscholar +1 more source
Magnesium and silicon in interstellar dust: X-ray overview [PDF]
Astronomy & Astrophysics, 2020 Context.The dense Galactic environment is a large reservoir of interstellar dust. Therefore, this region represents a perfect laboratory to study the properties of cosmic dust grains. X-rays are the most direct way to detect the interaction of light with
D. Rogantini +7 more
semanticscholar +1 more source
Dust evolution, a global view I. Nanoparticles, nascence, nitrogen and natural selection … joining the dots [PDF]
Royal Society Open Science, 2016 The role and importance of nanoparticles for interstellar chemistry and beyond is explored within the framework of The Heterogeneous dust Evolution Model for Interstellar Solids (THEMIS), focusing on their active surface chemistry, the effects of ...
A. P. Jones
doaj +1 more source
Gaia-2MASS 3D maps of Galactic interstellar dust within 3 kpc [PDF]
Astronomy & Astrophysics, 2019 Gaia stellar measurements are currently revolutionizing our knowledge of the evolutionary history of the Milky Way. 3D maps of the interstellar dust provide complementary information and are a tool for a wide range of uses.
R. Lallement +7 more
semanticscholar +1 more source