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APM Surveys for High Redshift QSOs

Published online by Cambridge University Press:  25 April 2016

M. J. Irwin  and
R. G. McMahon
M. J. Irwin
Affiliation:
Institute of Astronomy, Cambridge CB3 OHA, UK
R. G. McMahon
Affiliation:
Institute of Astronomy, Cambridge CB3 OHA, UK
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Abstract

The first QSO with a redshift z > 4 was found using a combination of UK Schmidt Telescope (UKST) plates and the APM automatic plate measuring machine (Warren et al. 1987a). By continuing to make use of UKST survey plates plus the APM facility we have added substantially to the number of known QSOs with z > 4. A brief description of the general survey technique is presented together with a preliminary discussion of some of the results obtained so far.

Type
Extragalactic
Information
Publications of the Astronomical Society of Australia , Volume 9 , Issue 2 , 1991 , pp. 246 - 247
Copyright
Copyright © Astronomical Society of Australia 1991

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References

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