Unresolved H-Alpha Enhancements at High Galactic Latitude in the WHAM Sky Survey Maps

Details Unresolved H-Alpha Enhancements at High Galactic Latitude in the WHAM Sky Survey Maps Unresolved H-Alpha Enhancements at High Galactic Latitude in the WHAM Sky Survey Maps

2004-11-04

arxiv.org/abs/astro-ph/0411120v1

Astronomy and Astrophysics

Astrophysics

22 pages, 8 figures, 2 tables, to appear in Feb. 2005 AJ

Scientific paper

10.1086/427135

We have identified 85 regions of enhanced H-Alpha emission at |b| > 10 degrees subtending approximately 1 degree or less on the Wisconsin H-Alpha Mapper (WHAM) sky survey. These high latitude ``WHAM point sources'' have H-Alpha fluxes of 10^{-11} to 10^{-9} erg cm^-2 s^-1, radial velocities within about 70 km/s of the LSR, and line widths that range from less than 20 km/s to about 80 km/s (FWHM). Twenty nine of these enhancements are not identified with either cataloged nebulae or hot stars and appear to have kinematic properties that differ from those observed for planetary nebulae. Another 14 enhancements are near hot evolved low mass stars that had no previously reported detections of associated nebulosity. The remainder of the enhancements are cataloged planetary nebulae and small, high latitude H II regions surrounding massive O and early B stars.

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