Results 81 to 90 of about 41,478 (242)

Variations of the Ratio of Total-To-selective Extinction in the Galaxy

Open Astronomy, 2003
The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
doaj   +1 more source

Facing Apocalypse: Climate Mobilities and the Cinematic Child

Sociology Lens, Volume 37, Issue 1, Page 105-115, March 2024.
Abstract This article engages with the representations and meanings of child figures within US films about environmentally induced displacement. At the intersection between film studies, childhood studies, and the emerging scholarship on climate mobilities (Boas et al., 2022), it explores the ways in which three contemporary apocalyptic films—The Road (
Andrés Buesa
wiley   +1 more source

An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST

The Astrophysical Journal
We present a direct measurement of extinction curves using corrected Gaia XP spectra of the common sources in Gaia DR3 and LAMOST DR7. Our analysis of approximately 370,000 high-quality samples yielded a high-precision average extinction curve for the ...
Ruoyi Zhang, Haibo Yuan, Bowen Huang, Tao Wang, Lin Yang, Gregory M. Green, Xiangyu Zhang   +6 more
doaj   +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

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, Raana Sabri, Hossein Mosallaei   +2 more
wiley   +1 more source

The Near-Infrared Extinction Law in Regions of High Av

, 2005
We present a spectroscopic study of the shape of the dust-extinction law between 1.0 and 2.2um towards a set of nine ultracompact HII regions with Av > 15 mag.
Lumsden, S. L., Moore, T. J. T., Puxley, P. J., Ridge, N. A.   +3 more
core   +1 more source

Overlapping Open Clusters NGC 1750 and NGC 1758 behind the Taurus Dark Clouds. II. CCD Photometry in the Vilnius System

Open Astronomy, 2003
Seven-color photometry in the Vilnius system has been obtained for 420 stars down to V = 16 mag in the area containing the overlapping open clusters NGC 1750 and NGC 1758 in Taurus.
Straižys V., Kazlauskas A., Černiauskas A., Boyle R. P., Vrba F. J., Philip A. G. Davis, Laugalys V., Černis K., Smriglio F.   +8 more
doaj   +1 more source

IR emission and UV extinction in two open clusters [PDF]

Recent models of interstellar extinction have shown the importance of understanding both the UV and IR properties of interstellar dust grains. IRAS data have shown variations in 60 and 100 micron emissions presumably due to the presence of IR cirrus ...
Hackwell, James A., Hecht, James H.
core   +1 more source

The interstellar oxygen-K absorption edge as observed by XMM-Newton

, 2003
High resolution X-ray spectra of the Reflection Grating Spectrometer (RGS) on board the XMM satellite are used to resolve the oxygen K absorption edge. By combining spectra of low and high extinction sources, the observed absorption edge can be split in ...
A. J. den Boggende, A. P. Rasmussen, Bradshaw, Brandt, C. P. de Vries, Dame, Den Herder, F. B. Paerels, Henke, J. S. Kaastra, J. W. den Herder, Jansen, Kaastra, Kaastra, Lockman, McLaughlin, Morrison, Nicastro, Paerels, Samson, Sevier   +20 more
core   +1 more source

Extinction Law at a Distance up to 25 kpc toward the Galactic Poles

, 2016
Photometry from the Tycho-2, 2MASS, and WISE catalogues for clump and branch giants at a distance up to 25 kpc toward the Galactic poles has allowed the variations of various characteristics of the infrared interstellar extinction law with distance to be
Gontcharov, George
core   +1 more source