Spatial Power Spectra of the Background Light from Dusty Star-forming Galaxies

Details Spatial Power Spectra of the Background Light from Dusty Star-forming Galaxies Spatial Power Spectra of the Background Light from Dusty Star-forming Galaxies

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21560214h&link_type=abstract

American Astronomical Society, AAS Meeting #215, #602.14; Bulletin of the American Astronomical Society, Vol. 36, p.1123

Astronomy and Astrophysics

Astronomy

Scientific paper

We use observations made with the South Pole Telescope (SPT) to determine contributions to the auto and cross angular power spectra of 2.0 and 1.4 mm maps due to unresolved galaxies with brightnesses below our threshold for point-source detection. We find both Poisson and, for the first time at mm wavelengths, clustering components. The Poisson and clustering amplitudes are roughly consistent with expectations from models, and favor those that have a steeper dependence on wavelength. The clustering power detected in SPT, BLAST (250, 350 and 500 um) and Spitzer (160 um) data can be understood in the context of a simple model that has half of the 2.0 mm light coming from redshifts greater than 3.2. We also set an upper limit on the amplitude of the kinetic SZ power spectrum.

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