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Boersma, C., Bregman, J.D. and Allamandola, L.J. (2013) Properties of Polycyclic Aromatic Hydrocarbons in the Northwest Photon Dominated Region of NGC 7023. I. PAH Size, Charge, Composition, and Structure Distribution. Astrophysical Journal, 769, Article ID: 117.
https://doi.org/10.1088/0004-637X/769/2/117

has been cited by the following article:

• TITLE: Spitzer IRAC Colors of Nebulae Associated with Star-Forming Regions

  AUTHORS: Yoichi Itoh, Yumiko Oasa

  KEYWORDS: Interstellar Medium, Dust, Extinction, HII Regions

  JOURNAL NAME: International Journal of Astronomy and Astrophysics, Vol.9 No.1, March 7, 2019

  ABSTRACT: Star-forming regions are often associated with nebulosity. In this study, we investigated infrared diffuse emission in Spitzer IRAC images. The infrared nebula L1527 traces outflows emanating from a low-mass protostar. The nebular color is consistent with the color of a stellar photosphere with large extinction. Nebulae around the HII region W5-East are bright in the infrared. These colors are consistent with the model color of dust containing polycyclic aromatic hydrocarbon (PAH). The strength of ultraviolet irradiation of the nebulae and the small dust fraction were deduced from the infrared colors of the nebulae. We found that the edges of the nebulae are irradiated by strong ultraviolet radiation and have abundant small dust. Dust at the surface of the molecular cloud is thought to be destroyed by ultraviolet radiation from an early-type star.