Cold Dust Halos in Nearby Galaxies

Details Cold Dust Halos in Nearby Galaxies Cold Dust Halos in Nearby Galaxies

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30310r&link_type=abstract

Spitzer Proposal ID #30310

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Scientific paper

We propose to obtain deep MIPS images of a small sample of nearby spiral galaxies and star-bursting dwarf galaxies to measure their spectral energy distributions (SEDs), determine the frequency with which significant amounts of cold (T=15-20K) dust appear in galaxies, assess the spatial distribution, mass, and temperature for this cold dust, and explore the temperature and mass distributions across the galactic disks. We will test how each individual galactic component contributes to the heating and structure of the cold dust emission. The proposed observations will address crucial question in galaxy evolution and formation, including how galaxies typically form, retain, and accumulate reserves of cold dust and in what quantities, and, historically, how galactic dust has interacted with its surrounding environment. These will be combined with existing GTO data on nearby galaxies to analyze these properties over a wide range of morphological types. This is part of a coordinated study of cold dust in galaxies conducted by members of the MIPS GTO team.

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