Results 61 to 70 of about 427,113 (273)

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

Recent progress in theory and observational study of dust grain alignment and rotational disruption in star-forming regions

Frontiers in Astronomy and Space Sciences, 2022
Modern understanding of dust astrophysics reveals that radiative torques (RATs) arising from the radiation–dust interaction can induce two fundamental effects: grain alignment and rotational disruption.
Le Ngoc Tram, Thiem Hoang, Thiem Hoang
doaj   +1 more source

Investigating the interstellar dust through the Fe K-edge [PDF]

, 2017
Context. The chemical and physical properties of interstellar dust in the densest regions of the Galaxy are still not well understood. X-rays provide a powerful probe since they can penetrate gas and dust over a wide range of column densities (up to 1024
D. Rogantini, E. Costantini, S. Zeegers, C. Vries, W. Bras, F. Groot, H. Mutschke, L. W. Sron, Api, U. Amsterdam, L. Observatory, Nwo, Dubble at Esrf Debye Institute, U. University, Aiu, Jena   +15 more
semanticscholar   +1 more source

Mapping Dust Attenuation and the 2175 Å Bump at Kiloparsec Scales in Nearby Galaxies

The Astrophysical Journal, 2023
We develop a novel approach to measure the dust attenuation properties of galaxies, including the dust opacity, the shape of the attenuation curve, and the strength of the 2175 Å absorption feature.
Shuang Zhou, Cheng Li, Niu Li, Houjun Mo, Renbin Yan, Michael Eracleous, Mallory Molina, Caryl Gronwall, Nikhil Ajgaonkar, Zhuo Cheng, Ruonan Guo   +10 more
doaj   +1 more source

Interstellar Dust

, 2011
15 pages, 5 figures, "The Dynamic ISM: A Celebration of the Canadian Galactic Plane Survey", ASP Conference Series, Vol.438, from a conference held in Naramata, BC in June ...
openaire   +3 more sources

Aspects of the Mass Distribution of Interstellar Dust Grains in the Solar System from In-Situ Measurements [PDF]

, 1999
The in-situ detection of interstellar dust grains in the Solar System by the dust instruments on-board the Ulysses and Galileo spacecraft as well as the recent measurements of hyperbolic radar meteors give information on the properties of the ...
Baggaley, Baguhl, Baguhl, E. Grün, Frisch, G. Linkert, Grün, Grün, Grün, Grün, Grün, Gustafson, H. Krüger, Hamilton, Jones, Jones, Kim, Krüger, Krüger, Lallement, Landgraf, Landgraf, Li, M. Landgraf, Mathis, Mathis, Morfill, Oort, Taylor, W. J. Baggaley, Witte   +30 more
core   +2 more sources

More than 30 000 volunteers involved in identification of tiny rare interstellar dust particle candidates collected by the Stardust mission

Heidelberger Jahrbücher Online, 2017
The NASA Stardust mission returned the first tiny samples of interstellar dust from beyond the borders of our solar system. This region is almost devoid of matter and the interstellar dust particles floating through our solar system are extremely rare ...
Andrew J. Westphal, Mario Trieloff
doaj   +1 more source

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

Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?

Angewandte Chemie International Edition, EarlyView.
A new formation pathway for polycyclic aromatic nitrogen heterocycles (PANHs) has been found. The reaction of phenylnitrene and the propargyl radical leads to quinoline, proving that nitrenes are suitable precursors for nitrogen incorporation mechanisms.
Rahel Arns, Rory McClish, Patrick Hemberger, Andras Bodi, Jordy Bouwman, Tina Kasper, Domenik Schleier   +6 more
wiley   +1 more source

Orbital evolution under the action of fast interstellar gas flow with non-constant drag coefficient

, 2012
The acceleration of a spherical dust particle caused by an interstellar gas flow depends on the drag coefficient which is, for the given particle and flow of interstellar gas, a specific function of the relative speed of the dust particle with respect to
Alouani-Bibi, Bahcall, Baines, Belyaev, Burns, Danby, Debes, Frisch, Gustafson, Hines, Klačka, Klačka, Klačka, Lallement, Maness, Marzari, Marzari, Murray, P. Pástor, Poynting, Pástor, Pástor, Robertson, Scherer, Whipple, Wyatt   +25 more
core   +1 more source