Results 111 to 120 of about 427,113 (273)
Volume measurement of microparticles using SEM photogrammetry and 3‐D reconstruction
Meteoritics &Planetary Science, Volume 60, Issue 5, Page 1227-1235, May 2025.Abstract In this paper, we introduce a method for volume measurement of microparticles that includes scanning electron microscope photogrammetry with 3‐D model construction. Our results show that our method limits the volume uncertainty to ±10%, which is a significant improvement compared to previous methods (which likely overestimated volume by 100 ...
Y. Zheng +4 more
wiley +1 more source
The distribution of interstellar dust in CALIFA edge-on galaxies via oligochromatic radiative transfer fitting [PDF]
, 2014 We investigate the amount and spatial distribution of interstellar dust in edge-on spiral galaxies, using detailed radiative transfer modelling of a homogeneous sample of 12 galaxies selected from the Calar Alto Legacy Integral Field Area survey.
G. D. Geyter +7 more
semanticscholar +1 more source
On the Submillimeter Opacity of Protoplanetary Disks
, 2005 Solid particles with the composition of interstellar dust and power-law size distribution dn/da propto a^{-p} for a 3 lambda and 3 < p < 4 will have submm opacity spectral index beta(lambda) = dln(kappa)/dln(nu) approx (p-3) beta_{ism}, where beta_{ism}
B. T. Draine +7 more
core +1 more source
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2005 Dust is an ubiquitous inhabitant of the interstellar medium, and leaves an unmistakable signature in its optical properties, and physico-chemical evolution.
Borghese, F +4 more
doaj +1 more source
SWIFT ULTRAVIOLET OBSERVATIONS OF SUPERNOVA 2014J IN M82: LARGE EXTINCTION FROM INTERSTELLAR DUST [PDF]
, 2014 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).
P. J. Brown +10 more
semanticscholar +1 more source
Advanced Science, Volume 12, Issue 11, March 20, 2025.Lunar soil samples from Chang'e 5 are characterized by high‐resolution time‐of‐flight secondary ion mass spectrometry, which revealed uncommon vesicle patterns that may not be observed via the conventional scanning electron microscope with energy dispersive X‐ray.
Tinglu Song +10 more
wiley +1 more source
Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)
Mass Spectrometry Reviews, Volume 44, Issue 2, Page 101-134, March/April 2025.Abstract Selected ion flow tube mass spectrometry (SIFT‐MS) is now recognized as the most versatile analytical technique for the identification and quantification of trace gases down to the parts‐per‐trillion by volume, pptv, range. This statement is supported by the wide reach of its applications, from real‐time analysis, obviating sample collection ...
David Smith +4 more
wiley +1 more source
The presence of dust in the general interstellar medium is inferred from the extinction, polarization, and scattering of starlight; the presence of dark nebulae; interstellar depletions; the observed infrared emission around certain stars and various ...
Dwek, E.
core +1 more source
The Flattest Infrared Extinction Curve in Four Isolated Dense Molecular Cloud Cores
The Astrophysical Journal LettersThe extinction curve of interstellar dust in the dense molecular cloud cores is crucial for understanding dust properties, particularly size distribution and composition.
Jun Li +5 more
doaj +1 more source
Dust-polarization Maps and Interstellar Turbulence [PDF]
, 2016 Perhaps the most intriguing result of Planck’s dust-polarization measurements is the observation that the power in the E-mode polarization is twice that in the B mode, as opposed to pre-Planck expectations of roughly equal dust powers in the E and B ...
R. Caldwell, C. Hirata, M. Kamionkowski
semanticscholar +1 more source