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The IRAC instrument on the Spitzer Space Telescope has imaged two dozen nearby galaxies. The images reveal the reddening-free spatial distributions of the stellar photospheric emission and of the warm dust in the ISM. These two components provide a new framework for galaxy morphological classification, in which the presence of spiral arms and their emission strength relative to the starlight can be...
We present high‐resolution 345‐GHz interferometric observations of two extremely luminous (Lir≳ 1013 L⊙), submillimetre‐selected galaxies (SMGs) in the Cosmic Evolution Survey (COSMOS) field with the Submillimeter Array (SMA). Both targets were previously detected as unresolved point sources by the SMA in its compact configuration, also at 345 GHz. These new data, which provide a factor of ≳3 improvement...
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