A limit on galactic extinction not correlated with far IR emission
We have reprocessed the IRAS and DIRBE full-sky 100 µm maps, using Hi as a zero-point, to produce a map of Galactic extinction. This map is cross-correlated with APM galaxy counts over the full APM region, including dusty regions of the sky not used to compute the APM correlation function in Maddox et al. (1990a). The angular correlation function, ω(θ), of galaxy counts is computed with and without the extinction correction, and is used to suggest that our map accounts for ∼90% of the dust-induced correlation in the APM region on scales from 2–10°. This is the first time that a limit has been placed on the correlation function of the extinction not represented in a given map.
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