3 papers
astro-ph2001
Optical emission from high velocity clouds and the ionization sources in the Galactic halo
Benjamin J. Weiner, Stuart N. Vogel, T. B. Williams
Optical emission lines have now been detected from about 20 high velocity clouds. These emission lines -- primarily H-alpha, secondarily [N II] and [S II] -- are very faint and dif…
astro-ph2000
Comparing Giant Molecular Clouds in M31, M33 & the Milky Way
Kartik Sheth, Stuart N. Vogel, Christine D. Wilson +1
We present new observations of a 2' field in the north-eastern spiral arm of M31. In the 0.8 x 3.6 kpc mosaicked region, we have detected six distinct, large complexes of molecular…
astro-ph1996
On Turbulent Pressure Confinement of Ultra-Compact HII Regions
Taoling Xie, L. Mundy, S. Vogel +1
It has been proposed recently that the small size and long lifetime of ultra-compact HII regions (UCHIIs) could be due to pressure confinement if the thermal pressure of the ambien…