Dies ist eine Übersichtsseite mit Metadaten zu dieser wissenschaftlichen Arbeit. Der vollständige Artikel ist beim Verlag verfügbar.
Optical properties of interstellar graphite and silicate grains
3.294
Zitationen
2
Autoren
1984
Jahr
Abstract
The dielectric functions for graphite and astronomical silicate material are computed using available laboratory and astronomical data. It is noted that the magnetic dipole contribution to absorption in the infrared wavelengths can be important for conducting particles such as graphite. Formulas are given for evaluating electric and magnetic dipole cross-sections for small particles. Absorption cross-sections are evaluated for graphite and silicate particles with sizes between 0.003 and 1.0 microns, and wavelengths from 300 A to 1000 microns. On the basis of polarization profiles computed for both prolate and oblate graphite-silicate spheroids, it is concluded that interstellar silicate grain are predominantly oblate. Extinction curves are calculated for Mathis-Rumpl-Nordsieck graphite-silicate grain mixtures and are compared to observations. The model is found to be in good agreement with available infrared observations.
Ähnliche Arbeiten
A New Approach to Linear Filtering and Prediction Problems
1960 · 30.752 Zit.
Particle mesh Ewald: An <i>N</i>⋅log(<i>N</i>) method for Ewald sums in large systems
1993 · 30.282 Zit.
A Simplex Method for Function Minimization
1965 · 28.736 Zit.
Numerical integration of the cartesian equations of motion of a system with constraints: molecular dynamics of n-alkanes
1977 · 21.337 Zit.
Numerical recipes in C: the art of scientific computing
1993 · 18.116 Zit.