Abundances in the Neutral Interstellar Medium of I Zw 18 from FUSE Observations

  title={Abundances in the Neutral Interstellar Medium of I Zw 18 from FUSE Observations},
  author={Alessandra Aloisi and Sandra Savaglio and Timothy M. Heckman and Charles G. Hoopes and Claus Leitherer and Kenneth Russell Sembach},
We report on new FUSE far-UV spectroscopy of the most metal-poor blue compact dwarf galaxy I Zw 18. The new data represent an improvement over previous FUSE spectra by a factor of 1.7 in the signal-to-noise. Together with a larger spectral coverage (λλ = 917−1188 Å), this allows us to characterize absorption lines in the interstellar medium with unprecedented accuracy. The kinematics averaged over the large sampled region shows no clear evidence of gas inflows or outflows. The H i absorption is… 

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