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

Astrophysics, abstract
astro-ph/0301558

From: Douglas P. Finkbeiner <dfink@astro.princeton.edu>

Date: Tue, 28 Jan 2003 21:11:25 GMT   (226kb)

Authors:
Douglas P. Finkbeiner

Comments: 20 pages, 7 figures, ApJS in press, get data at this http URL

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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