Results 71 to 80 of about 1,535 (206)
Luminosity Distance and Extinction by Submicrometer-sized Grains
The Astrophysical Journal LettersThe 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
Active Metasurfaces for Non‐Rigid Light Sail Interstellar Optical Communication
Advanced Theory and Simulations, Volume 7, Issue 1, January 2024.Non‐rigidity of the nanophotonic light sail deformation that leads to varying angles of incidence and polarization across the aperture, significantly impacting unit cells' performance. It proposes a reflective all‐dielectric, low‐power active metasurface that dynamically counteracts the deformations in the shape of the light sail caused by the non ...
Mohammadrasoul Taghavi +2 more
wiley +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 +1 more
openaire +1 more source
Measuring the star formation rate density from CNOC2 [PDF]
, 2006 This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
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GRB Host Galaxies: An Unbiased Sample [PDF]
, 2011 We describe the current status and recent results from our Swift/VLT legacy survey, a VLT Large Programme aimed at characterizing the host galaxies of a homogeneously selected sub-sample of Swift GRBs.
Milvang-Jensen, Bo +6 more
core +1 more source
The Optical Extinction Law Depends on Magnetic Field Orientation: The RV–ψ Relation
The Astrophysical JournalFor 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
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An All-sky 3D Dust Map Based on Gaia and LAMOST
The Astrophysical Journal Supplement SeriesWe present a comprehensive 3D dust-reddening map covering the entire Milky Way, constructed by combining reddening estimates based on Large Sky Area Multi-Object Fiber Spectroscopy Telescope (LAMOST) low-resolution spectra ( E ( B − V ) _LAMOST ) with ...
Tao Wang +8 more
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Interstellar and cometary dust [PDF]
, 1989 Aspects of interstellar dust which are known from direct observation will be discussed. Some specific difficulties that various theories have in explaining the observations will be presented.
Mathis, John S.
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The Astrophysical JournalThe 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 +9 more
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A Multi-Frequency Perspective on Galactic Magnetism and Dust Extinction [PDF]
, 2023 The interstellar medium (ISM) of our Galaxy is a complex environment that is filled with dust and permeated by magnetic fields. The multiphase nature of the ISM makes comparisons of magnetic field tracers notoriously difficult, significantly hampering ...
Campbell, Jessica Lynn
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