Results 111 to 120 of about 50,798 (260)
Chiroptical properties of membrane glycerophospholipids and their chiral backbones
Chirality, Volume 36, Issue 3, March 2024.Examination of the interaction of glycerophospholipids with circularly polarized light suggests that direct induction of symmetry breaking to membrane lipids by chiral photons is unlikely. However, anisotropy spectra of certain analogs indicate potential alternative mechanisms for the origins of membrane lipid homochirality, providing insights into the
Jana Bocková +4 more
wiley +1 more source
Estimating dust distances to Type Ia supernovae from colour excess time-evolution
, 2017 We present a new technique to infer dust locations towards reddened Type Ia supernovae and to help discriminate between an interstellar and a circumstellar origin for the observed extinction. Using Monte Carlo simulations, we show that the time-evolution
Amanullah, R. +4 more
core +1 more source
Active Metasurfaces for Non‐Rigid Light Sail Interstellar Optical Communication
Advanced Theory and Simulations, Volume 7, Issue 1, January 2024.Non‐rigidity of the nanophotonic light sail deformation that leads to varying angles of incidence and polarization across the aperture, significantly impacting unit cells' performance. It proposes a reflective all‐dielectric, low‐power active metasurface that dynamically counteracts the deformations in the shape of the light sail caused by the non ...
Mohammadrasoul Taghavi +2 more
wiley +1 more source
The Astrophysical Journal Letters, 2023 PHANGS–JWST mid-infrared (MIR) imaging of nearby spiral galaxies has revealed ubiquitous filaments of dust emission in intricate detail. We present a pilot study to systematically map the dust filament network (DFN) at multiple scales between 25 and 400 ...
David A. Thilker +38 more
doaj +1 more source
Perspectives on Interstellar Dust Inside and Outside of the Heliosphere
, 2008 Measurements by dust detectors on interplanetary spacecraft appear to indicate a substantial flux of interstellar particles with masses exceeding 10^{-12}gram.
B. Fuchs +24 more
core +1 more source
The global dust modelling framework THEMIS (The Heterogeneous dust Evolution Model for Interstellar Solids) [PDF]
, 2017 Here we introduce the interstellar dust modelling framework THEMIS (The Heterogeneous dust Evolution Model for Interstellar Solids), which takes a global view of dust and its evolution in response to the local conditions in interstellar media.
A. Jones +4 more
semanticscholar +1 more source
The Global Structure of Molecular Clouds. I. Trends with Mass and Star Formation Rate
The Astrophysical Journal, 2023 We introduce a model for the large-scale, global 3D structure of molecular clouds. Motivated by the morphological appearance of clouds in surface density maps, we model clouds as cylinders, with the aim of backing out information about the volume density
Nia Imara, John C. Forbes
doaj +1 more source
The extinction law from photometric data: linear regression methods
, 2012 Context. The properties of dust grains, in particular their size distribution, are expected to differ from the interstellar medium to the high-density regions within molecular clouds.
Akritas +29 more
core +1 more source
Luminosity Distance and Extinction by Submicrometer-sized Grains
The Astrophysical Journal LettersThe distance to the stars is a fundamental parameter, which is determined via two primary methods—parallax and luminosity. While the parallax is a direct trigonometric method, the luminosity distance is usually influenced by interstellar extinction.
R. Siebenmorgen, Frank Heymann, R. Chini
doaj +1 more source
Spectral Energy Distributions of starburst galaxies in the 900-1200 A range
, 2002 We present the 970-1175 A spectral energy distributions (SEDs) of 12 starburst galaxies observed with the Far Ultraviolet Spectroscopic Explorer FUSE.
Barnstedt +31 more
core +2 more sources