Planck 2013 results.XIV.Zodiacal emission

The Planck satellite provides a set of all-sky maps spanning nine frequencies from 30 GHz to 857 GHz, with an unprecedented combination of sensitivity and angular resolution. Planets, minor bodies, and di use interplanetary dust (IPD) contribute to the submillimetre and millimetre sky emission it observed. The di use emission can be e ectively separated from Galactic and other emissions, because Planck views a given point on the distant celestial sphere multiple times, through di erent columns of IPD. We use the Planck data to investigate the behaviour of Zodiacal emission over the whole sky in the sub-millimetre and millimetre. We fit the COBE Zodiacal model to the Planck data to find the emissivities of the various components of this model ‐ a di use cloud, three asteroidal dust bands, a circumsolar ring, and an Earth-trailing feature. The emissivity of the di use Zodiacal cloud decreases with increasing wavelength, as expected from earlier analyses. The emissivities of the dust bands, however, decrease less rapidly, indicating that the properties of the grains in the bands are di erent than those in the di use cloud. As part of the analysis, we fit the small amount of Galactic emission seen through the instrument’s far sidelobes and place limits on possible contamination of the CMB results from both Zodiacal emission and Galactic emission seen through these far sidelobes. When necessary, these results are used in the Planck pipeline to make maps with Zodiacal emission and far sidelobes removed. We show that the spectrum of the Zodiacal correction to the CMB maps is small compared to the Planck CMB temperature power spectrum.