Invited review in "Hunting for the dark: the hidden side of galaxy formation", eds. Victor P. Debattista and Cristina C. Popescu, AIP Conf. Ser. 1240, p. 35.
astro-ph/1006.4606

For a PDF version of the article, click here.

THE EVOLUTION OF GALAXIES: AN INFRARED PERSPECTIVE

Cristina C. Popescu 1 and Richard J. Tuffs 2


1 Jeremiah Horrocks Institute, University of Central Lancashire, UK
2 Max Planck Institut für Kernphysik, Germany


Abstract. Understanding the infrared emission of galaxies is critical to observational and theoretical investigations of the condensation of galaxies out of the intergalactic medium and the conversion of gas into stars over cosmic time. From an observational perspective, about half of all photons emitted within galaxies are locally absorbed by dust grains, necessitating a self-consistent analysis of the panchromatic emission of galaxies to quantify star-formation and AGN activity as a function of epoch and environment. From a theoretical perspective, physical processes involving dust are expected to play a major role in regulating the accumulation of baryons in galaxies and their condensation into stars on scales ranging from Mpc down to sub-pc. All this requires a quantitative analysis of the interaction between dust, gas and radiation. Here we review progress in the modelling of some of these processes.


Table of Contents

INTRODUCTION

DUST REGULATING THE THERMODYNAMIC STATE OF THE GAS

MODELLING THE SEDS OF GALAXIES
Decoding panchromatic SEDs
Encoding predicted physical quantities

OUTLOOK

REFERENCES

Next