Results 71 to 80 of about 430,768 (202)

Studying the spatial distribution of interstellar dust [PDF]

, 1989
The spacial distribution of interstellar dust reflects both interstellar dynamics and the processes which form and destroy dust in the interstellar medium (ISM).
Werner, Michael W., Allen, C., Murthy, Jayant, Walker, Helen J., Kimble, R., Henry, R. C., Wofford, J.   +6 more
core  

Parameterizing the interstellar dust temperature [PDF]

, 2017
The temperature of interstellar dust particles is of great importance to astronomers. It plays a crucial role in the thermodynamics of interstellar clouds, because of the gas-dust collisional coupling.
Caselli, P., Esplugues, G., Szűcs, L., G. B. Esplugues, P. Caselli, Hocuk, S., S. Hocuk, SzHucs, L., Esplugues, G. B., M. Spaans, Esplugues, G.B., Spaans, M., S. Cazaux, L. Szűcs, Cazaux, S., Cazaux, S.M.   +15 more
core   +2 more sources

Luminosity Distance and Extinction by Submicrometer-sized Grains

The Astrophysical Journal Letters
The distance to the stars is a fundamental parameter, which is determined via two primary methods—parallax and luminosity. While the parallax is a direct trigonometric method, the luminosity distance is usually influenced by interstellar extinction.
R. Siebenmorgen, Frank Heymann, R. Chini
doaj   +1 more source

Extinction Curves, Distances, and Clumpiness of Diffuse Interstellar Dust Clouds

The Astronomical Journal, 1999
22 pages, 13 figures (postscript, gif, jpg). Accepted for publication in the Astronomical Journal, scheduled for the May 1999 issue. Full resolution postscript versions of all figures are available at http://www.ucolick.org/~arpad/
Szomoru, Arpad, Guhathakurta, Puragra
openaire   +2 more sources

Limitations of the modified blackbody fit method for determining molecular cloud properties

Astronomische Nachrichten, Volume 345, Issue 4, May 2024.
Abstract Achieving a comprehensive understanding of the star and planet formation process is one of the fundamental tasks of astrophysics, requiring detailed knowledge of the physical conditions during the different phases of this process. During the earliest stages, that is, concerning physical processes in molecular clouds and filaments, the column ...
Niko Zielinski, Sebastian Wolf
wiley   +1 more source

No evidence for dust extinction in GRB 050904 at z ~ 6.3 [PDF]

, 2010
Context. Gamma-ray burst (GRB) afterglows are excellent and sensitive probes of gas and dust in star-forming galaxies at all epochs. It has been posited that dust in the early Universe must be different from dust at lower redshifts.
Michalowski, M. J., J. Levan, Zafar, T., Vreeswijk, P. M., Michał J. Michałowski, Darach J. Watson, Hjorth, Jens, Malesani, Daniele, Malesani, D., P. M. Vreeswijk, Fynbo, Johan Peter Uldall, Tayyaba Zafar, T. Zafar, J. Hjorth, Daniele Malesani, Watson, Darach Jafar, Fynbo, J. P. U., A. J. Levan, Johan P. U. Fynbo, J. P. U. Fynbo, Paul M. Vreeswijk, Vreeswijk, Paul Marijn, Jens Hjorth, Michalowski, Michal, D. Malesani, Levan, A. J., D. J. Watson, M. J. Michałowski, Michałowski, M. J., Zafar, Tayyaba, Hjorth, J. (Jens), Hjorth, J., Watson, D. J.   +32 more
core   +1 more source

The Optical Extinction Law Depends on Magnetic Field Orientation: The RV–ψ Relation

The Astrophysical Journal
For aspherical interstellar dust grains aligned with their short axes preferentially parallel to the local magnetic field, the amount of extinction per grain is larger when the magnetic field is along the line of sight and smaller when in the plane of ...
Brandon S. Hensley
doaj   +1 more source

Interstellar extinction toward the CAS OB6 association: Where is the dust?

The Astronomical Journal, 1993
We have completed a multiband (ultraviolet, optical, and near-infrared) study of the interstellar extinction properties of nine massive stars in IC 1805 and IC 1848, which are both part of Cas OB6 in the Perseus spiral arm. Our analysis includes determination of absolute extinction over the wavelength range from 3 micrometers to 1250 A.
Margaret Murray Hanson, Geoffrey C. Clayton   +1 more
openaire   +1 more source

Chiroptical properties of membrane glycerophospholipids and their chiral backbones

Chirality, Volume 36, Issue 3, March 2024.
Examination of the interaction of glycerophospholipids with circularly polarized light suggests that direct induction of symmetry breaking to membrane lipids by chiral photons is unlikely. However, anisotropy spectra of certain analogs indicate potential alternative mechanisms for the origins of membrane lipid homochirality, providing insights into the
Jana Bocková, Adrien D. Garcia, Nykola C. Jones, Søren V. Hoffmann, Cornelia Meinert   +4 more
wiley   +1 more source

A Face-on View of Interstellar Dust in the Galactic Plane

The Astronomical Journal
Interstellar dust is a fundamental component of the Milky Way, influencing star formation, galactic evolution, and observations across the electromagnetic spectrum.
Lin Zhang, Bingqiu Chen, Fei Qin, Guangxing Li, Haibo Yuan, Yi Ren   +5 more
doaj   +1 more source