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Interstellar Abundances in the Magellanic Clouds
Daniel E. Welty
We summarize recent studies of the predominantly neutral gas in the Magellanic Clouds (MC), based on combinations of high-resolution optical spectra and UV spectra obtained with IU…
Density Variations over Subparsec Scales in Diffuse Molecular Gas
K. Pan, S. R. Federman, D. E. Welty
We present high-resolution observations of interstellar CN, CH, CH^{+}, \ion{Ca}{1}, and \ion{Ca}{2} absorption lines toward the multiple star systems HD206267 and HD217035. Substa…
Variable Interstellar Absorption toward the Halo Star HD 219188 - Implications for Small-Scale Interstellar Structure
Daniel E. Welty, Edward L. Fitzpatrick
Within the last 10 years, strong, narrow Na I absorption has appeared at v_sun ~ -38 km/s toward the halo star HD 219188; that absorption has continued to strengthen, by a factor 2…
FUSE Observations of Interstellar Gas toward the SMC Star Sk 108
C. Mallouris, D. E. Welty, D. G. York +10
We discuss the interstellar absorption lines found in FUSE spectra of the Wolf-Rayet binary Sk 108, located in the northeastern part of the main ``bar'' of the Small Magellanic Clo…