...ánchez^1,2,3,

Visiting Astronomer, German-Spanish Astronomical Centre, Calar Alto, operated by the Max-Planck-Institute for Astronomy, Heidelberg, jointly with the Spanish National Commission for Astronomy.

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... results

A cosmology with $H_{\rm o}=65$ km s^-1 Mpc^-1, $\Omega=0.7$ and $\lambda=0.3$ will change the absolute magnitudes of the objects by $\sim$0.3 mag in the range of redshifts we considered.

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... IRAF

IRAF is distributed by the NOAO, which is operated by AURA, Inc., under contract to the NSF.

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