Determination of the Far-Infrared Cosmic Background Using COBE DIRBE and WHAM Data

Determination of the cosmic infrared background (CIB) at far-infrared wavelengths using COBE DIRBE data is limited by the accuracy to which foreground interplanetary and Galactic dust emission can be modeled and subtracted. Most previous determinations of the far-infrared CIB were based on the detec...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2007-09, Vol.667 (1), p.11-25
Main Authors: Odegard, N, Arendt, R. G, Dwek, E, Haffner, L. M, Hauser, M. G, Reynolds, R. J
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Determination of the cosmic infrared background (CIB) at far-infrared wavelengths using COBE DIRBE data is limited by the accuracy to which foreground interplanetary and Galactic dust emission can be modeled and subtracted. Most previous determinations of the far-infrared CIB were based on the detection of residual isotropic emission in sky maps from which the emission from interplanetary dust and the neutral interstellar medium were removed. In this paper we use the Wisconsin Ha Mapper (WHAM) Northern Sky Survey as a tracer of the ionized medium to examine the effect of this foreground component on determination of the CIB. We decompose DIRBE far-infrared data for five high Galactic latitude regions into H I- and Ha-correlated components and a residual component. We find the Ha-correlated component to be consistent with zero for each region, yielding CIB results that are essentially the same as those previously derived by the COBE DIRBE team: [unk](nW m super(-2) sr super(-1))
ISSN:0004-637X
1538-4357
DOI:10.1086/520079