Results 71 to 80 of about 49,325 (179)

Absorption and scattering by interstellar dust in the silicon K-edge of GX 5-1 [PDF]

, 2016
Context. We study the absorption and scattering of X-ray radiation by interstellar dust particles, which allows us to access the physical and chemical properties of dust. The interstellar dust composition is not well understood, especially on the densest
S. Zeegers, E. Costantini, C. Vries, A. Tielens, H. Chihara, F. Groot, H. Mutschke, L. Waters, S. Sron, L. Observatory, O. University, Debye Institute for Nanomaterials Science, A. Jena, Uva, Naoj   +14 more
semanticscholar   +1 more source

Mapping the Milky Way bulge at high resolution: the 3D dust extinction, CO, and X factor maps

, 2014
Three dimensional interstellar extinction maps provide a powerful tool for stellar population analysis. We use data from the VISTA Variables in the Via Lactea survey together with the Besan\c{c}on stellar population synthesis model of the Galaxy to ...
Chen, B. Q., Enokiya, R., Fukui, Y., Gonzalez, O. A., Jiang, B. W., Minniti, D., Rejkuba, M., Schultheis, M., Torii, K.   +8 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, M. Koehler, N. Ysard, M. Bocchio, L. Verstraete   +4 more
semanticscholar   +1 more source

Properties and Alignment of Interstellar Dust Grains toward Type Ia Supernovae with Anomalous Polarization Curves [PDF]

Astrophysical Journal, 2015
Recent photometric and polarimetric observations of Type Ia supernovae (SNe Ia) show unusually low total-to-selective extinction ratios (RV < 2) and wavelengths of maximum polarization (λmax < 0.4 μm) for several SNe Ia, which indicates peculiar ...
Thiem C. Hoang
semanticscholar   +1 more source

Interstellar polarization and grain alignment: the role of iron and silicon

, 2012
We compiled the polarimetric data for a sample of lines of sight with known abundances of Mg, Si, and Fe. We correlated the degree of interstellar polarization $P$ and polarization efficiency (the ratio of $P$ to the colour excess $E(B-V)$ or extinction $
Abbas, Andersson, Andersson, Andersson, Andersson, Asplund, Belley, Das, Davis, Djouadi, Draine, Draine, Duley, Efimov, Elias, Fitzpatrick, Ghosh, H. K. Das, Harries, Heiles, Il’in, Jones, Kim, Kimura, Kimura, Kocifaj, Krauß, Larson, Lazarian, Lazarian, Leroy, M. S. Prokopjeva, Marraco, Martin, Mathis, Matsumura, McDavid, Michel, Min, Molster, N. V. Voshchinnikov, Niyogi, Oudmaijer, Patriarchi, Poeckert, Purcell, Roche, Serkowski, Sorrell, Sorrell, Sturm, Th. Henning, Valencic, van Breemen, Vega, Vink, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Wegner, Wegner, Weingartner, Weitenbeck, Whittet, Whittet   +65 more
core   +1 more source

Gas absorption and dust extinction towards the Orion Nebula Cluster [PDF]

, 2016
We characterise the relation between the gas and dust content of the interstellar medium towards young stellar objects in the Orion Nebula Cluster. X-ray observations provide estimates of the absorbing equivalent hydrogen column density N_H based on ...
B. Hasenberger, J. Forbrich, J. Alves, S. Wolk, S. Meingast, K. Getman, I. Pillitteri   +6 more
semanticscholar   +1 more source

The mid-infrared extinction law in the darkest cores of the Pipe Nebula

, 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. Aims.
Alves, J., Ascenso, J., Lada, C. J., Lombardi, M., Román-Zúñiga, C. G.   +4 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

A PRECISE DETERMINATION OF THE MID-INFRARED INTERSTELLAR EXTINCTION LAW BASED ON THE APOGEE SPECTROSCOPIC SURVEY [PDF]

, 2016
A precise measure of the mid-infrared interstellar extinction law is crucial for investigating the properties of interstellar dust, especially larger-sized grains.
M. Xue, B. Jiang, Jian Gao, Jiaming Liu, Shu Wang, Aigen Li Beijing Normal University, U. Missouri   +6 more
semanticscholar   +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, Bell, Calzetti, Calzetti, Calzetti, Cardelli, D. Burgarella, D. Kunth, Deharveng, Donas, Giavalisco, Gonzalez Delgado, Heckman, Heckman, Heckman, Helou, J. M. Deharveng, Kinney, Leitherer, Leitherer, Meurer, Meurer, Noeske, Sasseen, Schlegel, Shull, Stecher, Terlevich, Thuan, V. Buat, Vidal-Madjar, Witt   +31 more
core   +2 more sources