Infrared Array Camera (IRAC) Observations of Planetary Nebulae

  title={Infrared Array Camera (IRAC) Observations of Planetary Nebulae},
  author={Joseph L. Hora and William B. Latter and Lori E. Allen and Massimo Marengo and Lynne K. Deutsch and Judith L. Pipher},
  journal={The Astrophysical Journal Supplement Series},
  pages={296 - 301}
We present the initial results from the Infrared Array Camera (IRAC) imaging survey of planetary nebulae (PNs). The IRAC colors of PNs are red, especially in the 8.0 μm band. Emission in this band is likely due to contributions from two strong H2 lines and a [Ar III] line in that bandpass. IRAC is sensitive to the emission in the halos as well as in the ionized regions that are optically bright. In NGC 246, we have observed an unexpected ring of emission in the 5.8 and 8.0 μm IRAC bands not… 

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