Galactic contamination in the QMAP experiment

We quantify the level of foreground contamination in the QMAP cosmic microw ave background data with two objectives: (1) to measure the level to which the QMAP power spectrum measurements need to be corrected for foregrounds a nd (2) to use this data set to further refine current foreground models. We cross-correlate the QMAP data with a variety of foreground templates. The 30 GHz Ka-band data are found to be significantly correlated with the Hasla m 408 MHz and Reich & Reich 1420 MHz synchrotron maps but not with the Diff use Infrared Background Experiment 240, 140, and 100 mum maps or the Wiscon sin H-Alpha Mapper survey. The 40 GHz Q band has no significant template co rrelations. We discuss the constraints that this places on synchrotron, fre e-free, and dust emission. We also reanalyze the foreground-cleaned Ka-band data and find that the two band power measurements are lowered by 2.3% and 1.3%, respectively.