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- W3169077043 abstract "We report on Keck observations and confirm the redshift of the most distant galaxy known: 8C1435+63 at z=4.25. The spectrum shows a strong Ly$alpha$ line, a Ly$alpha$ forest continuum break and a continuum break at $lambda_{rest}=912$A. The Ly$alpha$ emission is spatially extended and roughly aligned with the radio source. The galaxy shows a double structure in the $I$-band ($lambda_{rest}approx$1500A) which is aligned with the radio axis; the two $I$-band components spatially coincide with the nuclear and southern radio components. Some fraction of the $I$ band emission could be due to a nonthermal process such as inverse compton scattering. In the $K$-band ($lambda_{rest}approx$4200A), which may be dominated by starlight, the galaxy has a very low surface brightness, diffuse morphology. The $K$ morphology shows little relationship to the radio source structure, although the major axis of the $K$ emission is elongated roughly in the direction of the radio source axis. The galaxian continuum is very red ($I-K>4$) and if the $K$ continuum is due to starlight, implies a formation redshift of $z_f > 5$. We speculate that this galaxy may be the progenitor of a present day cD galaxy." @default.
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- W3169077043 date "1994-12-01" @default.
- W3169077043 modified "2023-09-25" @default.
- W3169077043 title "Keck Observations of the Most Distant Galaxy: 8C1435+63 at z=4.25" @default.
- W3169077043 hasPublicationYear "1994" @default.
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