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arXiv:astro-ph/0411732 (astro-ph)
[Submitted on 26 Nov 2004]

Title:Detection of Two Massive CO Systems in 4C 41.17 at z = 3.8

Authors:Carlos De Breuck (ESO), Dennis Downes (IRAM), Roberto Neri (IRAM), Wil van Breugel (IGPP/LLNL), Michiel Reuland (IGPP/LLNL and Leiden), Alain Omont (IAP), Rob Ivison (Edinburgh)
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Abstract: We have detected CO(4-3) in the z=3.8 radio galaxy 4C 41.17 with the IRAM Interferometer. The CO is in two massive (M_dyn ~ 6 x 10^10 M_Sun) systems separated by 1.8" (13 kpc), and by 400 km/s in velocity, which coincide with two different dark lanes in a deep Ly-alpha image. One CO component coincides with the cm-radio core of the radio galaxy, and its redshift is close to that of the HeII AGN line. The second CO component is near the base of a cone-shaped region southwest of the nucleus, which resembles the emission-line cones seen in nearby AGN and starburst galaxies. The characteristics of the CO sources and their mm/submm dust continuum are similar to those found in ultraluminous IR galaxies and in some high-z radio galaxies and quasars. The fact that 4C 41.17 contains two CO systems is further evidence for the role of mergers in the evolution of galaxies at high redshift.
Comments: 5 Pages, including 4 PostScript figures. Accepted for publication in Astronomy & Astrophysics Letters
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0411732
  (or arXiv:astro-ph/0411732v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0411732
Journal reference: Astron.Astrophys. 430 (2005) L1-L4
Related DOI: https://doi.org/10.1051/0004-6361%3A200400115

Submission history

From: Carlos De Breuck [view email]
[v1] Fri, 26 Nov 2004 18:04:36 UTC (248 KB)
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