Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-25T16:21:30.429Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Hazard, C., McMahon, R. G. and Sargent, W. L. W., 1986, Nature, 322, 38.Google Scholar
Schmidt, M., Schneider, D. P. and Gunn, J. C., 1988, A. S. P. Conf. Ser., 2, 96.Google Scholar
Turner, E., 1990, preprint.Google Scholar
Warren, S. J., Hewett, P. C., Irwin, M. J., McMahon, R. G., Kibblewhite, E. J., Bridgeland, M. T. and Bunclark, P. S., 1987a, Nature, 325, 131.Google Scholar
Warren, S. J., Hewett, P. C., Osmer, P. S. and Irwin, M. J., 1987b, Nature, 330, 453.Google Scholar