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| Paper: |
Habitable Worlds Observatory: The Nature of the First Stars |
| Monograph: |
10, HWO25 Proceedings Part I: Community Science Case Development Documents |
| Page: |
73 |
| Authors: |
Ian U. Roederer; Rana Ezzeddine; Jennifer S. Sobeck |
| DOI: |
10.26624/UKXV6779 |
| Abstract: |
We present the science case for characterizing the nature of the first stars using the Habitable Worlds
Observatory (HWO). High-resolution ultraviolet (UV) spectroscopy with the HWO has the potential to
confirm any surviving low-mass zero-metallicity first stars by placing unprecedented low limits on their metal
abundances. It also has the potential to substantially increase the number of elements detectable in the spectra
of known long-lived low-mass stars, which exhibit extremely low metal abundances that reveal the metals
produced by the first stars. Elements important for this science case with UV transitions include C, Mg, Al,
Si, P, S, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn. HWO would expand the discovery space when compared with
the Hubble Space Telescope by enabling high-resolution UV spectroscopy for much fainter stars throughout
the Milky Way and neighboring stellar systems. |
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