Infrared Magnitude-Redshift Relations for Luminous Radio Galaxies

Details Infrared Magnitude-Redshift Relations for Luminous Radio Galaxies Infrared Magnitude-Redshift Relations for Luminous Radio Galaxies

2001-10-02

arxiv.org/abs/astro-ph/0110054v2

Mon.Not.Roy.Astron.Soc. 329 (2002) 277

Astronomy and Astrophysics

Astrophysics

14 pages, LaTeX, 9 figures, accepted for publication in MNRAS. Replacement corrects some annoying typos

Scientific paper

10.1046/j.1365-8711.2002.04997.x

Infrared magnitude-redshift relations for the 3CR and 6C samples of radio galaxies are presented for a wide range of plausible cosmological models, including those with non-zero cosmological constant OmegaLambda. Variations in the galaxy formation redshift, metallicity and star formation history are also considered. The results of the modelling are displayed in terms of magnitude differences between the models and no-evolution tracks, illustrating the amount of K-band evolution necessary to account for the observational data. Given a number of plausible assumptions, the results of these analyses suggest that: (i) cosmologies which predict T_0xH_0>1 (where T_0 denotes the current age of the universe) can be excluded; (ii) the star formation redshift should lie in the redshift interval 5

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