Determination of cosmology and evolution from K-band magnitude-redshift and number count observations

Details Determination of cosmology and evolution from K-band magnitude-redshift and number count observations Determination of cosmology and evolution from K-band magnitude-redshift and number count observations

2001-09-19

arxiv.org/abs/astro-ph/0109321v1

Mon.Not.Roy.Astron.Soc. 332 (2002) 479

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1046/j.1365-8711.2002.05321.x

We determine cosmological and evolutionary parameters from the 3CR K-band Hubble diagram and K-band number counts, assuming that the galaxies in question undergo pure luminosity evolution. Separately the two data sets are highly degenerate with respect to choice of cosmological and evolutionary parameters, but in combination the degeneracy is resolved. Of models which are either flat or have $\Omega_\Lambda=0$, the preferred ones are close to the canonical case $\Omega_\CdM=1$, $\Omega_\Lambda=0$, with luminosity evolution amounting to one magnitude brighter at z=1.

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