Figure 10 from Spitzer-IRS Study of the Antennae Galaxies NGC 4038/39

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Spitzer-IRS Study of the Antennae Galaxies NGC 4038/39

Authors: B. R. Brandl, L. Snijders, M. den Brok, D. G. Whelan, B. Groves, P. van der Werf, V. Charmandaris, J. D. Smith, L. Armus, R. C. Kennicutt, Jr., and J. R. Houck

BRANDL et al. 2009 The Astrophysical Journal 699 1982.

Provider: AAS Journals

Caption: Figure 10.

IRS spectral map of the 8.6 μm/11.3 μm PAH ratio. The median ratio has been normalized to unity, which is colored in mean gray, and the range extends over a factor of 2 to both sides. Brighter regions represent relatively stronger 8.6 μm emission, darker regions weaker 8.6 μm emission. Field size and orientation are as in Figure 4 but the resolution has been reduced by rebinning by a factor of 2 to suppress the noise.

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