EPoS Contribution
EPoS Contribution
A Spitzer Survey of Class 0 Sources- What Is the Mid-Infrared SED Telling Us?

Erick Young
Steward Observatory, University of Arizona, Arizona, USA
Under the Spitzer guaranteed time young disks program, we have survey a number of the important nearby star formation regions using both the IRAC and MIPS instruments. In the youngest regions, a significant number of all the known Class 0 objects have been observed. With the unprecedented sensitivity of IRAC and MIPS, we have been able to obtain Spectral Energy Distributions spanning 3.6 to 24 microns for many of these objects. We address the implications of these relatively short wavelength observations on models of the Class 0 envelopes.