High Velocity Gas Outflows from H II regions in Disc Galaxies

Relaño, M.; Beckman, J. E.; Rozas, M.
Bibliographical reference

Chinese Journal of Astronomy and Astrophysics, Vol. 3, Supplement, p. 181-185

Advertised on:
12
2003
Number of authors
3
IAC number of authors
2
Citations
0
Refereed citations
0
Description
We analyze the Hα emission line profiles of the HII region populations in three disc spiral galaxies and find evidence of wing features at 40-90 km/s from the central peak in a significant fraction of regions. We explain the wing features as due to a shell expanding inside the HII region, quantify the energy involved and present two possible mechanisms to drive the expanding shell.