The Metallicity of High-Velocity Cloud Complex C

Details The Metallicity of High-Velocity Cloud Complex C The Metallicity of High-Velocity Cloud Complex C

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003assl..281..169c&link_type=abstract

The IGM/Galaxy Connection: The Distribution of Baryons at z=0, ASSL Conference Proceedings Vol. 281. Edited by Jessica L. Rosenb

Computer Science

Scientific paper

Using archival Far Ultraviolet Spectroscopic Explorer (FUSE) and Hubble Space Telescope (HST) data, we have assembled a survey of eight sight lines through high-velocity cloud Complex C. We find that the metallicity of the complex, based on [OI/HI], ranges from 0.1-0.25 solar. These data indicate that parts of the cloud have a higher metallicity than previously thought and that Complex C may represent a mixture of "Galactic fountain" gas with infalling low-metallicity gas. Further, we find that the abundances of O, Si, and S are enhanced relative to N and Fe, suggesting that the bulk of the metals in Complex C were produced by Type II supernovae.

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