Astron. Astrophys. Suppl. Ser. 130, 119-132

Deep H$\alpha$ survey of the Milky Way

IV. The l = 301$^\circ$ to l = 324$^\circ$ area

D. Russeil - Y.M. Georgelin - P. Amram - J.L. Gach - Y.P. Georgelin - M. Marcelin

Send offprint request: D. Russeil

Observatoire de Marseille, 2 place Le Verrier, F-13248 Marseille Cedex 04, France

Received July 17; accepted November 21, 1997

Abstract:

The detailed velocity field of the ionized hydrogen has been observed between l = 301$^\circ$ and l = 324$^\circ$ as part of an H$\alpha$ Survey of the southern Milky Way. Analysis of the H$\alpha$ profiles shows six different velocity components. These H$\alpha$ observations, combined with multiwavelength and stellar data, are used to find the most probable distances of the different gas layers.

Key words: interstellar medium: HII regions -- Galaxy: structure