Other
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30134f&link_type=abstract
Spitzer Proposal ID #30134
Other
Scientific paper
We propose to carry the first large, statistically complete study of star-forming dwarf galaxies at 3.0, 4.5, 5.8, and 8.0 um with Spitzer. Contrary to our expectations, our small, preliminary study of 15 objects in the Bootes field has shown that these objects contain significant amounts of dust emission in the mid-infrared. These observations, in combination with the low line-of-sight absorption and the low luminosities of these galaxies indicate that their properties are significantly different from those observed in spiral galaxies. A larger, statistically complete sample of dwarf star-forming galaxies will allow us to probe the full range of dust/mid-infrared properties found in the dwarf star-forming galaxies in order to evaluate the cosmic scatter in these populations. We will also use this sample to: (1) compare 8 um star-formation rate estimates with those determined from [O II] and H-alpha, (2) determine the contribution of dwarf galaxies to the star-formation rate density in the local universe, (3) determine the luminosity- metallicity relation and other measurements of the stellar and dust properties in these galaxies, and (4) determine the mid-infrared spectral energy distributions of these local systems which can be used as a template for comparisons with high-redshift, low metallicity, star-forming systems.
Ashby Matthew
Fazio Giovanni
Gronwall Caryl
Huang Jiasheng
Rosenberg Jessica
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