Mapping the Aromatic Emissions in the Nearby Spiral Galaxies IC 342 and Maffei 2

Details Mapping the Aromatic Emissions in the Nearby Spiral Galaxies IC 342 and Maffei 2 Mapping the Aromatic Emissions in the Nearby Spiral Galaxies IC 342 and Maffei 2

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20607t&link_type=abstract

Spitzer Proposal ID #20607

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Scientific paper

We propose to map the nearby spiral galaxies IC 342 and Maffei 2 with IRAC, and their nuclear regions with IRS, to map out the spatial distribution of mid-infrared aromatic emission features for comparison with molecular line and HI maps. Our principal component analysis of the molecular line emission has revealed a complicated chemistry in the nucleus, dominated in some parts by shocks and in others by radiation fields. With IRAC maps we can extend the principal component analysis to mid-IR features. With IRS we can study the lines in the nucleus in greater detail but still with sufficient resolution to distinguish the regions of different chemistries. We also propose to do a large scale mapping of the disks of both galaxies with IRAC for comparison with our total neutral gas density maps from HI and CO.

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