Results 41 to 50 of about 20,710 (214)

Laboratory exploration of mineral precipitates from Europa's subsurface ocean

Journal of Applied Crystallography, Volume 54, Issue 5, Page 1455-1479, October 2021., 2021
Precipitation experiments from a model Europan ocean solution subjected to fast and slow freezing suggest that the highly hydrated Na–Mg sulfate phase Na2Mg(SO4)2·16H2O is one of the lowest‐temperature mineral phases likely to be stable on Europa's surface and may therefore be astrobiologically significant.The precipitation of hydrated phases from a ...
Stephen P. Thompson, Hilary Kennedy, Benjamin M. Butler, Sarah J. Day, Emmal Safi, Aneurin Evans   +5 more
wiley   +1 more source

The Ultraviolet to Mid-infrared Extinction Law of the Taurus Molecular Cloud Based on the Gaia DR3, GALEX, APASS, Pan-STARRS1, 2MASS, and WISE Surveys

The Astrophysical Journal, 2023
Interstellar-dust extinction law is essential for interpreting observations. In this work, we investigate the ultraviolet (UV)–mid-infrared (IR) extinction law of the Taurus molecular cloud and its possible variations. We select 504,988 dwarf stars (4200
Ling Li, Shu Wang, Xiaodian Chen, QingQuan Jiang   +3 more
doaj   +1 more source

Modeling galactic extinction

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
We present a model for interstellar extinction dust, in which we assume a bimodal distribution of extinction carriers, a dispersion of core-mantle grains, supplemented by a collection of PAHs in free molecular form.
C. Cecchi-Pestellini, G. Mulas, S. Casu, M.A. Iati', R. Saija, A. Cacciola, F. Borghese, P. Denti   +7 more
doaj   +1 more source

The nature of interstellar dust as revealed by light scattering

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
Interstellar dust was first identified through the extinction that it causes of optical starlight. Initially, observational and theoretical studies of extinction were made to identify simple ways of removing the effect of extinction.
D. A. Williams
doaj   +1 more source

Detection of PAH Absorption and Determination of the Mid-infrared Diffuse Interstellar Extinction Curve from the Sight Line toward Cyg OB2-12 [PDF]

Astrophysical Journal, 2020
The sight line toward the luminous blue hypergiant Cyg OB2-12 is widely used to study interstellar dust on account of its large extinction (AV ≃ 10 mag) and the fact that this extinction appears to be dominated by dust typical of the diffuse interstellar
B. Hensley, B. Draine
semanticscholar   +1 more source

An imaging polarimetry survey of Type Ia supernovae: are peculiar extinction and polarization properties produced by circumstellar or interstellar matter? [PDF]

, 2021
Some highly reddened Type Ia supernovae (SNe Ia) display low total-to-selective extinction ratios ($R_V \lesssim 2$) in comparison to that of typical Milky Way dust ($R_V \approx 3.3$), and polarization curves that rise steeply to blue wavelengths, with ...
Matthew R. Chu, A. Cikota, D. Baade, F. Patat, A. Filippenko, J. Wheeler, J. Maund, M. Bulla, Yi Yang, P. Hoflich, Lifan Wang   +10 more
semanticscholar   +1 more source

Three-dimensional Distribution of the Interstellar Dust in the Milky Way [PDF]

, 2020
We present a three-dimensional (3D) extinction map of the southern sky. The map covers the SkyMapper Southern Survey (SMSS) area of ∼14,000 deg2 and has spatial resolutions between 6.′9 and 27′.
H.-L. Guo, B.-Q. Chen, H.-B. Yuan, Y. Huang, D. Liu, Y. Yang, X.-Y. Li, W.-X. Sun, X.-W. Liu   +8 more
semanticscholar   +1 more source

All-sky three-dimensional dust density and extinction Maps of the Milky Way out to 2.8 kpc [PDF]

Monthly notices of the Royal Astronomical Society
Three-dimensional dust density maps are crucial for understanding the structure of the interstellar medium of the Milky Way and the processes that shape it.
T. Dharmawardena, C. Bailer-Jones, M. Fouesneau, D. Foreman-Mackey, P. Coronica, T. Colnaghi, T. Muller, A. G. Wilson   +7 more
semanticscholar   +1 more source

The Power of the Rings: The GRB 221009A Soft X-Ray Emission from Its Dust-scattering Halo

The Astrophysical Journal Letters, 2023
GRB 221009A is the brightest gamma-ray burst (GRB) ever detected that has occurred at low Galactic latitude. Owing to this exceptional combination, its prompt X-ray emission could be detected for weeks in the form of expanding X-ray rings produced by ...
Andrea Tiengo, Fabio Pintore, Beatrice Vaia, Simone Filippi, Andrea Sacchi, Paolo Esposito, Michela Rigoselli, Sandro Mereghetti, Ruben Salvaterra, Barbara Šiljeg, Andrea Bracco, Željka Bošnjak, Vibor Jelić, Sergio Campana   +13 more
doaj   +1 more source

Galaxies with grains: unraveling dust evolution and extinction curves with hydrodynamical simulations [PDF]

Astronomy & Astrophysics
Dust in galaxies is an important tracer of galaxy properties and their evolution over time. The physical origin of the grain size distribution, the dust chemical composition, and, hence, the associated ultraviolet-to-optical extinctions in diverse ...
Y. Dubois, Francisco Rodr'iguez Montero, Corentin Guerra, M. Trebitsch, San Han, R. Beckmann, S. K. Yi, Joseph S. W. Lewis, J. K. Jang   +8 more
semanticscholar   +1 more source