Other
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20432m&link_type=abstract
Spitzer Proposal ID #20432
Other
Scientific paper
Low surface brightness (LSB) spiral galaxies are one of the most common classes of disk galaxy in the local universe, yet little is known about the detailed structure and composition of their interstellar medium (ISM). This has implications for our understanding of star formation in a wide range of low-density, low-metallicity galactic environments. We propose IRAC and MIPS imaging of a sample of three edge-on, LSB spirals, two of which have been recently detected in CO. Our study will explore how the distributions of warm and cold dust are correlated with other ISM and star formation tracers, including HI, H alpha, CO, and dark clouds seen in optical images. Additional goals include searching for a radially or vertically extended component of cold dust in LSB spirals that may trace an underlying dark baryonic component, and obtaining robust measurements of the stellar mass of LSB disks. With the aid of 3-D Monte Carlo radiative transfer models, we will use our data to assess the structure and energy balance of the ISM of LSB spirals and to constrain the nature of their past and present star formation.
Matthews Lynn
Wood Kenneth
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