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arXiv · astro-ph/0301558

A Full-Sky H-alpha Template for Microwave Foreground Prediction

Douglas P. Finkbeiner
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Abstract

A full-sky H-alpha map with 6 arcmin (FWHM) resolution is presented. This map is a composite of the Virginia Tech Spectral line Survey (VTSS) in the north and the Southern H-Alpha Sky Survey Atlas (SHASSA) in the south. The Wisconsin H-Alpha Mapper (WHAM) survey provides a stable zero-point over 3/4 of the sky on a 1 degree scale. This composite map can be used to provide limits on thermal bremsstrahlung (free-free emission) from ionized gas known to contaminate microwave-background data. The map is available on the WWW for public use.

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Douglas P. Finkbeiner. 2003-01-28. A Full-Sky H-alpha Template for Microwave Foreground Prediction. https://doi.org/10.1086/374411

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