Results 51 to 60 of about 49,325 (179)

Interstellar Extinction and Elemental Abundances [PDF]

, 2020
Elements in the interstellar medium (ISM) exist in the form of gas or dust. The interstellar extinction and elemental abundances provide crucial constraints on the composition, size, and quantity of interstellar dust.
W. Zuo, Aigen Li, Gang Zhao
semanticscholar   +1 more source

Dust models post-Planck: constraining the far-infrared opacity of dust in the diffuse interstellar medium

, 2015
We compare the performance of several dust models in reproducing the dust spectral energy distribution (SED) per unit extinction in the diffuse interstellar medium (ISM).
Aniano, G., Boulanger, F., Fanciullo, L., Guillet, V., Jones, A. P., Köhler, M., Miville-Deschênes, A., Miville-Deschênes, M.-A., Ysard, N.   +8 more
core   +2 more sources

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., Bulla, M., Feindt, U., Ferretti, R., Goobar, A.   +4 more
core   +1 more source

Emergence of Optical Activity and Surface Morphology Changes in Racemic Amino Acid Films Under Circularly Polarized Lyman‐α Light Irradiation

Chirality, Volume 36, Issue 11, November 2024.
The photoreaction induced by Lyman‐α circularly polarized light (CPL) irradiation in racemic alanine film is more complex than simple preferential photolysis of enantiopure alanine molecules, and formation of larger molecules is observed. Circular networks of order of 100 nm scale are introduced in the alanine film surface by the irradiation.
Masahiro Kobayashi, Jun‐ichi Takahashi, Hiroshi Ota, Koichi Matsuo, Mohamed I. A. Ibrahim, Taketoshi Minato, Gen Fujimori, Masahiro Katoh, Kensei Kobayashi, Yoko Kebukawa, Hiroaki Nakamura   +10 more
wiley   +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, B. T. Draine, B.D. Savage, B.T. Draine, B.T. Draine, B.T. Draine, B.T. Draine, D.C. Martin, E. Grun, E. Möbius, E.L. Fitzpatrick, H. Krüger, J.A. Cardelli, J.C. Weingartner, J.C. Weingartner, J.D. Slavin, J.S. Mathis, J.S. Mathis, M. Asplund, M. Landgraf, M. Landgraf, N. Grevesse, R. Lallement, S. Redfield, V. Zubko   +24 more
core   +1 more source

Analyzing dust particle size and size distribution on extracted particles by SEM and comparing with light scattering techniques

Plasma Processes and Polymers, Volume 21, Issue 8, August 2024.
A comparison is presented between Kinetic Mie Polarimetry and Scanning Electron Microscopy of plasma‐grown amorphous hydrogenated carbon (a‐C:H) particles. The analysis includes particle size distributions, which show that the standard deviation grows linearly, resulting in a constant shape.
Andreas Petersen, Jakob Wötzel, Christiane Zamponi, Julia Kobus, Sebastian Wolf, Franko Greiner   +5 more
wiley   +1 more source

The Optical to Infrared 0.6–5.3 μm Dust Extinction Law of the Milky Way with JWST NIRSpec: Westerlund 2

Astrophysical Journal Letters
The interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate the 0.6–5.3 μm ...
Shu Wang, Xiaodian Chen
semanticscholar   +1 more source

Dust in the Local Group

, 2015
How dust absorbs and scatters starlight as a function of wavelength (known as the interstellar extinction curve) is crucial for correcting for the effects of dust extinction in inferring the true luminosity and colors of reddened astrophysical objects ...
Gao, Jian, Jiang, B. W., Li, Aigen, Wang, Shu   +3 more
core   +1 more source

Life Cycle of Dust in the Magellanic Clouds and the Milky Way

, 2014
To a great extent, our understanding of the life cycle of dust is based on the observational and theoretical studies of the Milky Way and the Magellanic Clouds, which will be the topic of this contribution. Over past years, a large volume of observations
Henning, Thomas, Zhukovska, Svitlana
core   +1 more source

The deep eclipses of RW Aur revisited by long‐term photometric and spectroscopic monitoring

Astronomische Nachrichten, Volume 345, Issue 4, May 2024.
Abstract RW Aurigae is a young stellar system containing a classical T Tauri star as the primary component. It shows deep, irregular dimmings, first detected in 2010. At the University Observatory Jena, we carried out optical follow‐up observations. We performed multiband (BVRI) photometry of the system with the Cassegrain‐Teleskop‐Kamera II and the ...
Oliver Lux, Markus Mugrauer, Richard Bischoff   +2 more
wiley   +1 more source