Results 11 to 20 of about 50,798 (260)
Far-ultraviolet Dust Extinction and Molecular Hydrogen in the Diffuse Milky Way Interstellar Medium [PDF]
The Astrophysical Journal, 2023 Abstract We aim to compare variations in the full-UV dust extinction curve (912–3000 Å), with the H i/H2/total H content along diffuse Milky Way sightlines, to investigate possible connections between ISM conditions and dust properties. We combine an existing sample of 75 UV extinction curves based on IUE and FUSE data, with atomic and ...
Dries Van De Putte +4 more
semanticscholar +7 more sources
X-ray extinction from interstellar dust [PDF]
Astronomy & 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.
E. Costantini +5 more
semanticscholar +6 more sources
Properties of interstellar dust responsible for extinction laws with unusually low total-to-selective extinction ratios of R=1−2 [PDF]
Planetary and Space Science, 2016 It is well known that the extinction properties along lines of sight to Type Ia supernovae are described by steep extinction curves with unusually low total-to-selective extinction ratios of Rv = 1.0-2.0. In order to reveal the properties of interstellar dust that causes such peculiar extinction laws, we perform the fitting calculations to the measured
Takaya Nozawa
semanticscholar +6 more sources
The Astrophysical Journal LettersThe first all-sky, high-resolution, 3D map of the optical extinction curve of the Milky Way revealed an unexpected steepening of the extinction curve in the moderate-density, “translucent” interstellar medium (ISM).
Xiangyu Zhang +2 more
doaj +3 more sources
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
R. Siebenmorgen +3 more
semanticscholar +6 more sources
SWIFTULTRAVIOLET OBSERVATIONS OF SUPERNOVA 2014J IN M82: LARGE EXTINCTION FROM INTERSTELLAR DUST [PDF]
The Astrophysical Journal, 2015 We present optical and ultraviolet (UV) photometry and spectra of the very nearby and highly reddened supernova (SN) 2014J in M82 obtained with the Swift Ultra-Violet/Optical Telescope (UVOT). Comparison of the UVOT grism spectra of SN~2014J with Hubble Space Telescope observations of SN2011fe or UVOT grism spectra of SN~2012fr are consistent with an ...
Peter J. Brown +10 more
semanticscholar +8 more sources
Dust in the diffuse interstellar medium: Extinction, emission, linear and circular polarisation [PDF]
Astronomy & Astrophysics, 2013 We present a model for the diffuse interstellar dust that explains the observed wavelength-dependence of extinction, emission, linear and circular polarisation of light. The model is set-up with a small number of parameters. It consists of a mixture of amorphous carbon and silicate grains with sizes from the molecular domain of 0.5 up to about 500nm ...
R. Siebenmorgen +2 more
semanticscholar +6 more sources
The Astrophysical Journal LettersThe interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate the 0.6–5.3 μ m ...
Shu Wang, Xiaodian Chen
doaj +2 more sources
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 $A( )/A_{\rm V}$ and the polarizing ...
H. K. Das +2 more
openalex +3 more sources
Interstellar Dust Grains: Ultraviolet and Mid-IR Extinction Curves [PDF]
, 2019 7 pages, 3 figures, submitted to the Astro2020 Decadal ...
Karl D. Gordon +9 more
openalex +3 more sources