D. Russeil et al., DEEP H-ALPHA SURVEY OF THE MILKY-WAY - IV - THE L=301-DEGREES TO L=324-DEGREES AREA, Astronomy & Astrophysics. Supplement series, 130(1), 1998, pp. 119-132
The detailed velocity field of the ionized hydrogen has been observed
between l = 301 degrees and l = 324 degrees as part of an H alpha Surv
ey of the southern Milky Way. Analysis of the H alpha profiles shows s
ix different velocity components. These H alpha observations, combined
with multiwavelength and stellar data, are used to find the most prob
able distances of the different gas layers.