| Type |
Conference Paper |
| Names |
Nitish Chopra, L. M. Haffner, R. J. Reynolds, G. J. Madsen, A. S. Hill, K. A. Barger, K. P. Jaehnig, E. J. Mierkiewicz, J. W. Percival, N. M. Pingel, D. T. Reese, M. C. Gostisha |
| Proceedings Title |
Bulletin of the American Astronomical Society |
| Conference Name |
American Astronomical Society AAS Meeting #217, #251.07 |
| Volume |
43 |
| Date |
January 1, 2011 |
| Short Title |
The Wisconsin H-Alpha Mapper Sky Survey |
| URL |
http://adsabs.harvard.edu/abs/2011AAS...21725107C |
| Library Catalog |
NASA ADS |
| Abstract |
After a year of observations from its new location on Cerro Tololo, the
Wisconsin Ha Mapper (WHAM) has nearly completed survey observations
below d < -30°. This new data combined with the Northern Sky
Survey provides the first kinematic, all-sky survey of diffuse Ha from
the Milky Way. Aside from many large-scale, locally-ionized regions,
much of this emission arises from the Warm Ionized Medium (WIM), a
diffuse but thick component of the ISM that extends several kiloparsecs
into the Galactic halo. WHAM was designed primarily to study the WIM,
delivering a spatially integrated spectrum from a one-degree beam on the
sky covering 200 km s-1 with 12 km s-1 spectral
resolution. The short exposures of the survey reach sensitivity levels
of about 0.1 R (EM 0.2 pc cm-6) and reveal emission toward
nearly every direction in the sky. Here, we present our early efforts at
reducing this new southern dataset and offer a first look at the global
distribution and kinematics of diffuse ionized gas throughout the
Galaxy. WHAM and the research presented here are funded by NSF award
AST-0607512. We also thank the excellent and responsive staff at CTIO in
Chile for helping to keep our remote installation fully operational. |