The QUaD Galactic Plane Survey. I. Maps and Analysis of Diffuse Emission

19 pages, 21 figures, accepted for publication in ApJ; new revision includes tests of spectral line contribution. The maps analyzed in this paper are available for public download at http://find.spa.umn.edu/quad/quad_galactic/; International audience; We present a survey of ~800 deg2 of the galactic plane observed with the QUaD telescope. The primary products of the survey are maps of Stokes I, Q, and U parameters at 100 and 150 GHz, with spatial resolution of 5' and 3farcm5, respectively. Two regions are covered, spanning approximately 245°-295° and 315°-5° in the galactic longitude l and -4° < b < +4° in the galactic latitude b. At 0fdg02 square pixel size, the median sensitivity is 74 and 107 kJy sr-1 at 100 GHz and 150 GHz respectively in I, and 98 and 120 kJy sr-1 for Q and U. In total intensity, we find an average spectral index of α = 2.35 ± 0.01(stat) ± 0.02(sys) for |b