The Spectral Energy Distributions of Gas-Rich Galaxies: Confronting Models with Data; International Workshop, held 4-8 October, 2004 in Heidelberg, Germany. Edited by Cristina C. Popescu and Richard J. Tuffs. AIP Conference Proceedings, Vol. 761, 2005., p.965
astro-ph/0503567

For a PDF version of the article, click here.

ON THE ABSORPTION AND EMISSION PROPERTIES OF INTERSTELLAR GRAINS

Aigen Li


Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA


Abstract. Our current understanding of the absorption and emission properties of interstellar grains are reviewed. The constraints placed by the Kramers-Kronig relation on the wavelength-dependence and the maximum allowable quantity of the dust absorption are discussed. Comparisons of the opacities (mass absorption coefficients) derived from interstellar dust models with those directly estimated from observations are presented.


Table of Contents

INTRODUCTION

CONSTRAINTS FROM THE KRAMERS-KRONIG RELATION

OPACITY: WAVELENGTH-DEPENDENCE EXPONENT INDEX

OPACITY: ABSOLUTE VALUES

SUMMARY

REFERENCES

Next