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"SSGSS: The Spitzer SDSS GALEX Spectroscopic Survey"

Principal Investigator: David Schiminovich (Columbia University)

Total Observatory Time: 121.1 hours

We propose the Spitzer SDSS GALEX Spectroscopic Survey (SSGSS), a Spitzer/IRS Legacy Program to obtain mid-IR spectra of a representative sample of 100 galaxies that have been observed at other wavelengths. These galaxies are selected from the SDSS main spectroscopic survey in the Lockman Hole field, and have been observed by GALEX in the UV and SWIRE in the IR. This survey provides a crucial link between mid-IR studies of nearby galaxies, such as those performed by ISO and SINGS, and on-going and future mid-IR studies of high redshift galaxies. We will use the SSGSS data to study the global properties of SDSS galaxies using atomic and molecular nebular diagnostics measured from IR to UV. SSGSS galaxies are selected to be uniformly distributed over two orders of magnitude in stellar mass, present to past-averaged star formation rate and IR luminosity. The addition of low and high resolution mid-IR spectroscopy will allow the measurement molecular band features, fine structure lines and the stellar and thermal dust continuum components. We will combine these measurements with UV, optical, and broadband IR indicators of star formation, AGN activity, and stellar populations. This will allow us to derive global physical properties and new diagnostics for the study of the physical state of the ISM and the star formation history of each galaxy.

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This file was last modified on Thu Apr 24 16:46:44 2008.

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