Results 71 to 80 of about 2,793 (219)
A Unified Model of Interstellar Extinction and Polarization. I [PDF]
The Astrophysical Journal, 1965 The Most Completely Observed Characteristics of Interstellar Grains are their ability to dim and polarize the light of distant stars in our own galaxy. The principal limitation in previous theoretical models of interstellar dust clouds has been the fact that the extinction and polarization have been calculated for different particles, the connection ...
J. Mayo Greenberg, G. Shah
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Chirality, Volume 36, Issue 11, November 2024.The photoreaction induced by Lyman‐α circularly polarized light (CPL) irradiation in racemic alanine film is more complex than simple preferential photolysis of enantiopure alanine molecules, and formation of larger molecules is observed. Circular networks of order of 100 nm scale are introduced in the alanine film surface by the irradiation.
Masahiro Kobayashi +10 more
wiley +1 more source
The interstellar extinction to V4334 Sgr (Sakurai's object)
, 2002 We present an 8–13$~\mu$m spectrum of V4334 Sgr (Sakurai's object), which shows clear evidence for the presence of a silicate absorption feature at 9.7$~\mu$m.
T. R. Geballe +4 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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Plasma Processes and Polymers, Volume 21, Issue 8, August 2024.A comparison is presented between Kinetic Mie Polarimetry and Scanning Electron Microscopy of plasma‐grown amorphous hydrogenated carbon (a‐C:H) particles. The analysis includes particle size distributions, which show that the standard deviation grows linearly, resulting in a constant shape.
Andreas Petersen +5 more
wiley +1 more source
Influence of the gould belt on interstellar extinction [PDF]
Astronomy Letters, 2009 8 figures, 1 ...
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An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST
The Astrophysical JournalWe present a direct measurement of extinction curves using corrected Gaia XP spectra of the common sources in Gaia DR3 and LAMOST DR7. Our analysis of approximately 370,000 high-quality samples yielded a high-precision average extinction curve for the ...
Ruoyi Zhang +6 more
doaj +1 more source
Variations of the Ratio of Total-To-selective Extinction in the Galaxy
Open Astronomy, 2003 The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
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VUV spectroscopy of carbon dust analogs: contribution to interstellar extinction
, 2016 Context. A full spectral characterization of carbonaceous dust analogs is necessary to understand their potential as carriers of observed astronomical spectral signatures such as the ubiquitous UV bump at 217.5 nm and the far-ultraviolet (FUV) rise ...
Le, K. C. +11 more
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Estimation of Host Galaxy Extinction for SNe Ia
GalaxiesType Ia supernovae are used as fundamental probes of the cosmological parameters, based on a tight empirical relation between their peak luminosity and the width of their light curve. However, it has been recognized that SNe Ia are not “standard” candles,
Oleg Malkov +3 more
doaj +1 more source