Other
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50128f&link_type=abstract
Spitzer Proposal ID #50128
Other
Scientific paper
We propose a statistically robust study of 380 nearby, bright star-forming galaxies of all types to better understand the nature of star formation. The goal of this IRAC reference survey will be to measure total star formation rates via 8.0 micron PAH emission, with an emphasis on quantitative comparisons of multiple global star formation indicators including ultraviolet emission, H-alpha, and radio continuum measurements. The sample is selected to be fully representative of the entire ranges of infrared luminosity, dust temperature, and stellar mass exhibited by star-forming galaxies in the local universe: the sample galaxies exhibit all existing combinations of these properties with the minimum overall number, selected in a manner that allows results to be applied to the entire local galaxy population. Here we propose four-band Spitzer/IRAC photometry for the 275 out of 380 objects which lack suitable observations in the Spitzer archive. All sample galaxies already have extensive complementary data available including global ugrizJHK photometry plus radio continuum intensities. Most also have GALEX imaging; in addition we have already begun a ground-based campaign to acquire global H-alpha imaging for the complete sample. We are submitting this IRAC proposal in the context of a larger campaign that includes a GTO proposal to complete the MIPS 24 micron imaging, and a GO proposal to acquire the IRS low-resolution spectroscopy. Although these companion proposals will significantly increase the scientific return of our survey program, the success of this proposal is not contingent in any way on any other Spitzer proposal. Our international team is dedicated, experienced, and has adequate manpower and institutional resources, with expertise in all the relevant disciplines to ensure the success of this undertaking. PI Fazio believes this proposal to be the most important element of his extragalactic GTO program, and requests that it be assigned first priority.
Ashby Matthew L. N.
Ashby Matthew
Barmby Pauline
Chakrabarti Sukanya
Fazio Giovanni
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