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New Results from Complete Samples of Faint Radio Galaxies and Quasars

Published online by Cambridge University Press:  25 May 2016

K.M. Blundell ,
S. Rawlings ,
S.A. Eales  and
M. Lacy
K.M. Blundell
Affiliation:
1 Oxford University Astrophysics - Keble Road, Oxford, 0X1 3RH, U.K.
S. Rawlings
Affiliation:
1 Oxford University Astrophysics - Keble Road, Oxford, 0X1 3RH, U.K.
S.A. Eales
Affiliation:
2 Department of Physics & Astronomy, University of Wales at Cardiff, CF2 3YB, Wales, U.K.
M. Lacy
Affiliation:
1 Oxford University Astrophysics - Keble Road, Oxford, 0X1 3RH, U.K.

Extract

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In any flux-limited sample a tight correlation of luminosity (P) and redshift (z) is inevitable. It is therefore necessary to obtain complete samples at lower and lower flux-limits in order to have adequate coverage of the P–z plane, essential if we are to decouple the trends in epoch from trends in luminosity. This we have done for a number of flux-limits — giving coverage of the P–z plane seen in Fig. 1. Our redshift information is spectroscopic; the results of Eales et al (in prep.), namely the increased scatter in the

K-z plot for samples lower in luminosity than 3C, strongly warn us against using redshifts estimated from K-magnitudes.

Type
Cosmological Implications
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 567 - 568
Copyright
Copyright © Kluwer 1996 

References

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