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Clusters of Galaxies at Intermediate Redshifts: a Sample Selected at Radio Wavelenghts

Published online by Cambridge University Press:  25 May 2016

A. Zanichelli ,
R. Scaramella ,
M. Vigotti ,
G. Vettolani  and
G. Grueff
A. Zanichelli
Affiliation:
1 Osservatorio Astronomico di Roma, Monteporzio Catone, Italy
R. Scaramella
Affiliation:
1 Osservatorio Astronomico di Roma, Monteporzio Catone, Italy
M. Vigotti
Affiliation:
2 Istituto di Radioastronomia, C.N.R., Bologna, Italy
G. Vettolani
Affiliation:
2 Istituto di Radioastronomia, C.N.R., Bologna, Italy
G. Grueff
Affiliation:
3 Dipartimento di Astronomia, Università di Bologna, Bologna, Italy

Extract

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In order to gather a sample of intermediate redshifts (z ≃ 0.1 ÷ 0.2) clusters avoiding evolutionary effects or biases induced by limited sensitivity of instruments and optical plates that affect samples selected through inspection of optical plates, color diagrams or X-ray emission properties, we plan to use radio galaxies as suitable tracers of dense environments (e.g. Allington-Smith et al., 1993). This would allow us to effectively test different environments and population properties, and would also give valuable information on the effect of environment on the radioemission phenomena. Moreover, it would not impact on the X–ray or optical properties of clusters, since there is no significant correlation between the radio properties of galaxies within a cluster with its LX (Feigelson, Maccacaro and Zamorani, 1982), or with richness of the cluster (Zhao, Burns, and Owen, 1989).

Type
Radio Sources and their Environment
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 325 - 326
Copyright
Copyright © Kluwer 1996 

References

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