New Observational Constraints and Modeling of the Infrared Background: Dust Obscured Star-Formation at z>1 and Dust in the Outer Solar System

Understand

We provide measurements of the integrated galaxy light at 70, 160, 250, 350 and 500 micron using deep far-infrared and submillimeter data from space (Spitzer) and balloon platform (BLAST) extragalactic surveys.

• We use the technique of stacking at the positions of 24 micron sources, to supplement the fraction of the integrated galaxy light that is directly resolved through direct detections.
• We demonstrate that the integrated galaxy light even through stacking, falls short by factors of 2-3 in resolving the extragalactic far-infrared background.
• We also show that previous estimates of the integrated galaxy light (IGL) through stacking, have been biased towards high values.