The relations among 8, 24, and 160 micron dust emission within nearby spiral galaxies

G. J. Bendo,B. T. Draine,C. W. Engelbracht,G. Helou,M. D. Thornley,C. Bot,B. A. Buckalew,D. Calzetti,D. A. Dale,D. J. Hollenbach,J. Moustakas

Monthly Notices of the Royal Astronomical Society（2008）

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摘要

We investigate the relations among the stellar continuum-subtracted 8 μm polycyclic aromatic hydrocarbon (PAH 8 μ m) emission, 24 μm hot dust emission and 160 μm cold dust emission in 15 nearby face-on spiral galaxies in the Spitzer Infrared Nearby Galaxies Survey sample. The relation between PAH 8 and 24 μm emission measured in ∼2 kpc regions is found to exhibit a significant amount of scatter, a...

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galaxies: ISM,infrared: galaxies

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