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A Limit on Galactic Extinction Not Correlated with Far IR Emission

Published online by Cambridge University Press:  12 April 2016

Douglas P. Finkbeiner ,
David J. Schlegel  and
Marc Davis
Douglas P. Finkbeiner
Affiliation:
University of California at Berkeley, Departments of Physics and Astronomy, 601 Campbell Hall, Berkeley, CA 94720
David J. Schlegel
Affiliation:
University of Durham, Department of Physics, South Road, Durham DH1 3LE, United Kingdom
Marc Davis
Affiliation:
University of California at Berkeley, Departments of Physics and Astronomy, 601 Campbell Hall, Berkeley, CA 94720

Abstract

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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 crosscorrelated 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, w(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.

Type
Part VI Distant Hot Gas, SXRB Fluctuations, Dust, Gamma-rays
Information
International Astronomical Union Colloquium , Volume 166: The Local Bubble and Beyond , 1997 , pp. 367 - 370
Copyright
Copyright © Springer-Verlag 1998

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