Results 101 to 110 of about 218,608 (214)

VUV spectroscopy of carbon dust analogs: contribution to interstellar extinction

, 2016
Context. A full spectral characterization of carbonaceous dust analogs is necessary to understand their potential as carriers of observed astronomical spectral signatures such as the ubiquitous UV bump at 217.5 nm and the far-ultraviolet (FUV) rise ...
Le, K. C., L. Gavilan, A. Giuliani, T. Pino, Gavilan, L., E. Dartois, Alata, I., K. C. Le, Giuliani, A., Dartois, E., Pino, T., I. Alata   +11 more
core   +1 more source

Correlations between Dust Extinction Features across All Wavelength Scales: From Diffuse Interstellar Bands to R(V)

The Astrophysical Journal
Understanding variations in the dust extinction curve is imperative for using dust as a tracer of local structure in the interstellar medium, understanding dust chemistry, and performing extinction corrections.
Andrew K. Saydjari, Gregory M. Green
doaj   +1 more source

Extinction Distributions in Nearby Star-resolved Galaxies. I. M31

The Astronomical Journal
An extinction distribution of the Andromeda galaxy (M31) is constructed with member stars as tracers by fitting multiband photometric data from UKIRT/WFCAM, Panoramic Survey Telescope and Rapid Response System 1, and Gaia DR3.
Yuxi Wang, Jian Gao, Yi Ren, Bingqiu Chen   +3 more
doaj   +1 more source

Quantifying interstellar extinction at high Galactic latitudes

Monthly Notices of the Royal Astronomical Society
ABSTRACT A detailed map of the distribution of dust at high Galactic latitudes is essential for future cosmic microwave background polarization experiments because the dust, while diffuse, remains a significant foreground in these regions.
Matthew O’Callaghan, Gerry Gilmore, Kaisey S Mandel   +2 more
openaire   +2 more sources

Extinction by stratified interstellar dust grains

, 2010
We compute the optical properties of spherical dust grains composed of hollow silicate cores coated with two carbonaceous layers, the inner layer of mostly graphitic sp2 carbon and the outer layer of sp3 polymeric amorphous carbon, and explore the ...
SAIJA, Rosalba, 1, C. Cecchi Pestellini, CACCIOLA, ADRIANO, DENTI, Paolo, BORGHESE, Ferdinando, M. A. Iatì   +6 more
core  

A Detailed Analysis of Intermediate-scale Structure in Optical Extinction Curves: Expanded Census and Two-family Classification

The Astrophysical Journal
The features of interstellar extinction curves serve as powerful diagnostics for interstellar dust, revealing information about its composition, size distribution, and the physical and chemical processes that shape it. D. Massa et al.
Chamani M. Gunasekera, Marjorie Decleir, Karl D. Gordon, Geoffrey C. Clayton, Burcu Günay, Dries Van De Putte, Petia Yanchulova   +6 more
doaj   +1 more source

On the Variation of Interstellar Dust Extinction [PDF]

Dust obscures astronomical observations and plays a important role in the evolution of galaxies. Mapping dust in three dimensions not only allows accurate correction of observations but also constrains the evolution of the interstellar medium (ISM ...
Zhang, Xiangyu
core   +1 more source

A Computerized Model of Large-Scale Visual Interstellar Extinction [PDF]

, 1997
A numerical algorithm has been developed for calculating three-dimensional visual interstellar extinction and its error from inputs of Galactic longitude, Galactic latitude, and distance.
Stidham, Brett J., Hartmann, Dieter H., Hakkila, Jon, Myers, Jeannette M.   +3 more
core   +1 more source

Expanded Sample of Small Magellanic Cloud Ultraviolet Dust Extinction Curves: Correlations between the 2175 Å Bump, q PAH, Ultraviolet Extinction Shape, and N(H i)/A(V)

The Astrophysical Journal
The Small Magellanic Cloud (SMC) shows a large variation in ultraviolet (UV) dust extinction curves, ranging from Milky Way (MW) like to significantly steeper curves with no detectable 2175 Å bump.
Karl D. Gordon, E. L. Fitzpatrick, Derck Massa, Ralph Bohlin, Jérémy Chastenet, Claire E. Murray, Geoffrey C. Clayton, Daniel J. Lennon, Karl A. Misselt, Karin Sandstrom   +9 more
doaj   +1 more source

Spatial Variations of the Interstellar Polarization and Interstellar Extinction

, 2017
For more than 5000 stars with accurate parallaxes from the Hipparcos and Gaia DR1 Tycho-Gaia astrometric solution (TGAS), Tycho-2 photometry, interstellar polarization from eight catalogues and interstellar extinction from eight 3D maps the largest up to date comparison of the polarization and extinction is provided.
openaire   +2 more sources