3 papers
astro-ph.SR2026
Observations of the Halo Star HD 177566
William V. Dixon, Pierre Chayer
We have analyzed archival FUV and optical spectra of the hot halo star HD 177566. The star has an effective temperature K, surface gravity $\log g…
astro-ph.SR2025
The UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Large Director's Discretionary Program with Hubble. I. Goals, Design, and Initial Results
Julia Roman-Duval, William J. Fischer, Alexander W. Fullerton +44
Specifically selected to leverage the unique ultraviolet capabilities of the Hubble Space Telescope, the Hubble Ultraviolet Legacy Library of Young Stars as Essential Standards (UL…
astro-ph.SR2025
Observations of the Ultraviolet-bright Star III-60 in the Globular Cluster NGC 6723
William V. Dixon
We have analyzed archival far-ultraviolet spectra of the UV-bright star III-60 in the globular cluster NGC 6723 obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) and…