The WHAM Sky Survey is available as two datasets. The first is a kinematic release containing more than 49,000 spectra covering the whole sky revealing Galactic Hα emission between roughly -100 to +100 km/s (LSR) with 12 km/s velocity resolution. The second dataset contains only the velocity-integrated (-80 to +80 km/s LSR) intensities of these pointings. As a convenience, the kinematic release contains the integrated dataset in separate fields.
You can browse a sample of the WHAM-SS through a set of pre-generated figures. These are suitable for use in presentations or posters with proper attribution.
Public releases are tagged with a major label (DR#), a survey version (YYMMDD), and a revision date (YYMMDD). The initial release is labeled DR1. Using these designations, the base name for public survey files follows: wham-ss-LABEL-vVERSION-RELEASE. For example, wham-ss-DR1-v161116-170111 is a file generated on 01/11/2017 from the DR1 survey base version 161116. See the documentation below for more details.
This document describes the WHAM-SS and the format of the data. Each data file also includes a README in the header or in an IDL variable. Please read them carefully before contacting us with questions.
Kinematic Survey (DR1-v161116-170316)
Integrated Survey (DR1-v161116-170316)
DR1-v161116-170111 : Initial public release.
DR1-v161116-170222 : Add integrated survey release in FITS image format. Tweak data file header documentation.
DR1-v161116-170317 : Add kinematic survey release in FITS cube format. No changes to other formats.
(The original northern-only survey release (NSS) is still available but is superseded by this release. It will no longer be updated and will be retired soon.)
Haffner, L., Reynolds, R., Madsen, G., Hill, A., Barger, K., et al., 2010
Conference Proceedings in "American Astronomical Society, AAS Meeting #215, #415.28" Pages 265
View in ADS