Back to the Abstract

	1 Introduction
	2 Observations
	3 IRAC colors of the diffuse emission
	4 3.3 m feature and continuum
	5 Spectral diagnostics of PAH size and ionization state
	6 PAH size and ionization state across the diffuse ISM
	7 The origin of the NIR continuum
	8 Conclusion
	Appendix A: Determination of neutral and cation PAH cross-sections
	References

	List of tables
	List of figures