Results 181 to 190 of about 1,535 (206)
X-ray extinction from interstellar dust [PDF]
Astronomy and Astrophysics, 2019 Aims. We present a study on the prospects of observing carbon, sulfur, and other lower abundance elements (namely Al, Ca, Ti, and Ni) present in the interstellar medium using future X-ray instruments. We focus in particular on the detection and characterization of interstellar dust along the lines of sight. Methods.
Elisa Costantini +2 more
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Astrofizika, 1986
A model of two-layer cylindrical interstellar dust grains is used to calculate the interstellar extinction curves in the visible and near infrared regions of the spectrum and the ratio R /sub V/ of the total to the selective extinction. It is assumed that the core of the two-layer grains consists of ''astronomical silicate'' and the mantle of dirty ice
V B Il'In
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A model of two-layer cylindrical interstellar dust grains is used to calculate the interstellar extinction curves in the visible and near infrared regions of the spectrum and the ratio R /sub V/ of the total to the selective extinction. It is assumed that the core of the two-layer grains consists of ''astronomical silicate'' and the mantle of dirty ice
V B Il'In
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dust_extinction: Interstellar Dust Extinction Models
Journal of Open Source SoftwareKarl Gordon
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Interstellar extinction and polarization - a spheroidal dust grain approach perspective [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We extend and investigate the spheroidal model of interstellar dust grains used to simultaneously interpret the observed interstellar extinction and polarization curves. We compare our model with similar models recently suggested by other authors, study its properties and apply it to fit the normalized extinction $A(λ)/A_{\rm V}$ and the polarizing ...
Nikolai Voshchinnikov +2 more
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Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraints [PDF]
Astrophysical Journal, Supplement Series, 2004 70 pages, 23 figures, accepted for publication in the Astrophysical Journal ...
Eli Dwek, Richard Arendt
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Constraints on interstellar dust models from extinction and spectro-polarimetry [PDF]
Planetary and Space Science, 2017 We present polarisation spectra of seven stars in the lines-of-sight towards the Sco OB1 association. Our spectra were obtained within the framework of the Large Interstellar Polarization Survey carried out with the FORS instrument of the ESO VLT. We have modelled the wavelength-dependence of extinction and linear polarisation with a dust model for the
Stefano Bagnulo +2 more
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Modeling of interstellar extinction with composite dust grains
Astronomical and Astrophysical Transactions, 2002A model of interstellar dust must satisfy two conditions: dust grains have to be of the reasonable structure and chemical composition and explain basic observations. The latter are the interstellar extinction law and the depletion of interstellar elements. In this work, a new model of composite dust grains is considered.
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Three-component dust models for interstellar extinction
Journal of Astrophysics and Astronomy, 2010Interstellar extinction curves obtained from the ‘extinction without standard’ method were used to constrain the dust characteristics in the mean ISM (R V = 3.1), along the lines of sight through a high latitude diffuse molecular cloud towards HD 210121 (R
C Muthumariappan
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Dust in the Small Magellanic Cloud: Interstellar Polarization and Extinction [PDF]
Astrophysical Journal, 1997 To appear in the ApJ, 50 pages, latex ...
Claudia Rodrigues
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Stratified dust grains in the interstellar medium - II. Time-dependent interstellar extinction [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We consider a model of diffuse cloud dust in which carbon is deposited slowly on the surfaces of silicate cores. The solid carbon is also processed by the interstellar radiation so that its optical properties change with time. The computed interstellar extinction curves (ISECs) for this model evolve in time, lie close to the observed mean ISEC for ...
Cesare Cecchi-Pestellini +2 more
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