SIMBAD references

1999ApJ...518L..61V - Astrophys. J., 518, L61-L64 (1999/June-3)

A radio galaxy at z = 5.19.

VAN BREUGEL W., DE BREUCK C., STANFORD S.A., STERN D., ROETTGERING H. and MILEY G.

Abstract (from CDS):

We report the discovery of the most distant known active galactic nucleus, the radio galaxy TN J0924-2201 at z=5.19. The radio source was selected from a new sample of ultrasteep spectrum sources, has an extreme radio spectral index α^1.4 GHz^_365 MHz_=-1.63, and is identified at near-IR wavelengths with a very faint, K=21.3±0.3 object. Spectroscopic observations show a single emission line at λ∼7530 Å, which we identify as Lyα. The K-band image, sampling rest-frame U band, shows a multicomponent, radio-aligned morphology, which is typical of lower-redshift radio galaxies. TN J0924-2201 extends the near-IR Hubble, or K-z, relation for powerful radio galaxies to z>5 and is consistent with models of massive galaxies forming at even higher redshifts.

Abstract Copyright:

Journal keyword(s): Cosmology: Early Universe - Galaxies: Active - Galaxies: Distances and Redshifts - Galaxies: Formation - Galaxies: Individual: Alphanumeric: TN J0924-2201

Simbad objects: 8

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2021.03.02-09:24:26

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