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

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

2003-01-28

arxiv.org/abs/astro-ph/0301558v1

Astrophys.J.Suppl.146:407,2003

Astronomy and Astrophysics

Astrophysics

20 pages, 7 figures, ApJS in press, get data at http://skymaps.info

Scientific paper

10.1086/374411

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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