Stellar Libraries in the Ultraviolet

Claus Leitherer1*
1Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA

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The ultraviolet spectral region provides invaluable diagnostics in star-forming galaxies. JWST will break new frontiers with observations at redshifts close to the era of re-ionisation. I discuss some of the relevant open science questions and the requirements for spectral libraries used as templates for comparison. The trade-o s between empirical and theoretical libraries are evaluated. I highlight shortcomings in existing libraries, and suggest pathways for moving forward.

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Keywords : stars: atmospheres - galaxies: abundances - galaxies: high-redshift - galaxies: star formation