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arxiv: astro-ph/9911477 · v1 · submitted 1999-11-26 · 🌌 astro-ph

Galaxies at z>5: The View from Hawaii

classification 🌌 astro-ph
keywords galaxieskecklymanobservationssourcesalphaalthoughbackground
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We review the properties of z>5 galaxies studied with HST and with the Keck telescopes, and discuss the detectability of Lyman alpha emission-line galaxies out to z~6.5 based on these data and ongoing narrowband imaging surveys. The brightest sources may show (R-Z) color breaks, although the high sky background at Z (lambda_{eff} ~ 9200 Ang), makes such observations challenging for typical faint sources. Keck LRIS observations of the z=5 SDSS quasar and z>5 galaxies observed with HST in the HDF show that the strength of the Lyman break is evolving more slowly than extrapolations from models at z~3 would predict.

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