NOAO >   Observing Info >   Approved Programs >   2004A-0222

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Proposal Information for 2004A-0222


PI: Glenn E. Morrison, Caltech, morrison@ipac.caltech.edu
Address: IPAC, M/S 100-22; 770 South Wilson Ave., Pasadena, CA 91125, USA

CoI: Sebastian Oliver, Dept. of Physics & Astronomy, U. of Sussex
CoI: Duncan Farrah, Caltech-IPAC
CoI: Frazer N. Owen, NRAO-AOC
CoI: Carol Lonsdale, Caltech-IPAC
CoI: Harding E. Smith, Univ. Calif. San Diego
CoI: Cong Xu, Caltech-IPAC
CoI: Brian Siana, Univ. Calif. San Diego
CoI: Natalie Onyett, Dept. of Physics& Astronomy, U. of Sussex
CoI: SWIRE Team, Caltech-IPAC

Title: The SWIRE Bright Galaxy Infrared Luminosity Function Survey

Abstract: We propose a spectroscopic redshift survey of bright (r' \le 21 & z \lesssim 0.4) galaxies in the SWIRE Lockman region, to derive multi- (lambda) local luminosity functions (LF) from the SWIRE SIRTF legacy survey database. SWIRE will trace the evolution of star-forming galaxies, passively evolving galaxies, and AGNs as a function of environment to z \lesssim 3, where the bulk of cosmological evolution has occurred. Our goals for this proposal are to quantify the local LF's of different galaxy populations, thereby providing the benchmark against which we will assess the evolution of fainter SIRTF samples. Since high luminosity galaxies dominate the local 60(micron) luminosity density and are visible at higher-z, understanding their LF at other (lambda)'s is critical for determining all high-z near-IR(NIR)/MIR/FIR LF's, and their subsequent evolution. For spiral galaxies, an accurate LF will improve our understanding of the relative contribution of ambient starlight and active star-formation with respect to FIR emission, and the fraction of bolometric power in obscured star- formation sites. For spheroids, local NIR/MIR LF's will give a local benchmark, which will be used to discriminate between different high-z spheroidal formation paradigms. Our project will constrain local LF's to \lesssim 10%, thereby allowing accurate measures of evolution to be ascertained from high-z LF's.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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