Far-Ultraviolet Observations of Outflows from Infrared-Luminous Galaxies
Proceedings of the International Astronomical Union, Volume 292, pp. 367-370
Published in Mar 2013
We have obtained ultraviolet spectra between 1150 and 1450 Å of four ultraviolet-bright, infrared-luminous starburst galaxies. Our selected sight-lines towards the starburst nuclei probe the conditions in the starburst-driven outflows. We detect outflowing gas with velocities of up to ̃900 km s-1. It is likely that the outflows are a major source of metal enrichment of the galaxies' halos. The mass outflow rates of several tens of M☉ yr-1 are similar to the star-formation rates. The outflows may quench star formation and ultimately regulate the starburst.
galaxies: halos; galaxies: starburst; intergalactic medium; ultraviolet: ISM
2013: International Astronomical Union