2014/02/06 by Daniel A. Dale, George Helou, Georgios E. Magdis +3 · 1 citation
Physics and Astronomy · #astro-ph.CO #astro-ph.GA
paper · pdf · doi:10.1088/0004-637x/784/1/83
Accepted for publication in ApJ
arxiv created 2014/02/06 · arxiv updated 2015/06/18
A two-parameter semi-empirical model is presented for the spectral energy distributions of galaxies with contributions to their infrared-submillimeter-radio emission from both star formation and accretion disk-powered activity. This model builds upon a previous one-parameter family of models for star-forming galaxies, and includes an update to the mid-infrared emission using an average template obtained from Spitzer Space Telescope observations of normal galaxies. Star-forming/AGN diagnostics based on PAH equivalent widths and broadband infrared colors are presented, and example mid-infrared AGN fractional contributions are estimated from model fits to the GOALS sample of nearby U/LIRGS and the 5MUSES sample of 24um-selected sources at redshifts 0 < z < 2.