Spitzer Observations of Extraplanar PAH Emission from Several Edge-On Galaxies

Details Spitzer Observations of Extraplanar PAH Emission from Several Edge-On Galaxies Spitzer Observations of Extraplanar PAH Emission from Several Edge-On Galaxies

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.1504l&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #15.04; Bulletin of the American Astronomical Society, V

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We present Spitzer/IRAC observations of polycylic aromatic hydrocarbon (PAH) emission from interstellar material in the thick disks of several edge-on spiral galaxies. Our Spitzer 8 micron images reveal many dust structures with various morphologies far above the planes of these galaxies. There are round and irregular clouds, smoother clouds, vertical clouds and loop-like structures. Emission from PAHs can be seen to at least 2-4 kpc above the midplanes of the galaxies in our sample. PAHs appear to be a common constituent of extraplanar material in spiral galaxies, and the processes that circulate material from the thin interstellar disks of galaxies do not destroy these very small grains.

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