Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-25T06:38:58.875Z Has data issue: false hasContentIssue false
  • English
  • Français

Survey of Quasars over Large Areas

Published online by Cambridge University Press:  25 April 2016

Xiang-Tao He
Xiang-Tao He*
Affiliation:
Department of Astronomy, Beijing Normal University, Beijing 100875, China
Get access Rights & Permissions [Opens in a new window]

Abstract

The survey techniques for finding quasars in large areas of sky have developed rapidly in recent years. One can search for quasars in all wavelengths. The area of sky surveyed may be more than 1000 square degrees. The average density of quasar candidates down to magnitude 20 is about 20 per square degree. Therefore, more than 20 000 quasar candidates are waiting for further observation. The total number of confirmed quasars is currently about 5000. This paper gives a discussion of some of the physical properties of quasars, such as space distribution, luminosity function, clustering and redshift limit.

Type
Invited
Information
Publications of the Astronomical Society of Australia , Volume 9 , Issue 1 , 1991 , pp. 45 - 48
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

Arp, H., Wolstoncroft, R. D. and He, X. T., 1984, Astroptrys. J., 258, 44.Google Scholar
Arp, H., 1991, ‘Quasars in the central region of the Virgo cluster’, preprint.Google Scholar
Braccesi, A., Formiggini, L. and Gandolfi, E., 1970, Astron. Astrophys., 5, 264.Google Scholar
Chaffee, F. H., Foltz, C. B., Frye, B., Hewett, P.C. and MacAlpine, G.M., 1988, Publ. Astron. Soc. Pac., 100, 1217.CrossRefGoogle Scholar
Chaffee, F. H. et al., 1990, personal communication.Google Scholar
Chu, Y. and Zhu, X., 1989, in Proc. of ‘Large Scale Structure and Motion in the Universe’.Google Scholar
Crampton, D., Cowley, A. P. and Hartwick, F. D. A., 1987, Astrophys. J., 314, 129.CrossRefGoogle Scholar
Crampton, D., Cowley, A. P. and Hartwick, F. D. A., 1989, Astrophys. J., 354, 59.CrossRefGoogle Scholar
Fang, L. Z., Chu, Y. and Chu, X., 1984, Scientia Sinica, 10, 944.Google Scholar
Foltz, C. B., Chaffee, F. H., Hewett, P. C., MacAlpine, G. M., Tumshek, D.K., Weymann, R. J. and Anderson, S. F., 1987, Astron. J., 94, 1423.Google Scholar
Foltz, C. B., Chaffee, F. H., Hewett, P. C., Weyamnn, R. J., Anderson, S.F., and MacAlpine, G. M., 1989, Astron. J., 98, 1959.Google Scholar
Hewett, P. C., Irwin, M. J., Bunclark, P., Brigelend, M.T., Kibblewhite, E.J., He, X. T. and Smith, M. G., 1985, Mon. Not. R. Astr. Soc., 213, 917.CrossRefGoogle Scholar
He, X. T., Cannon, R. D., Peacock, J. A., Smith, M. G. and Oke, J. B., 1984, Mon. Not. R. Astr. Soc., 211, 443.CrossRefGoogle Scholar
He, X. T., Chu, Y., Fang, L. Z. and Smith, M. G., 1986, Acta Astronomica Sinica, 27, 144.Google Scholar
Koo, D. C., 1983, Quasars and gravitational lenses, p. 240.Google Scholar
Koo, D. C. and Kron, R. G., 1988, Astrophys. J., 325, 92.Google Scholar
Osmer, P. S. and Smith, M. G., 1980, Astrophys. J. Suppl. Ser., 42, 333.Google Scholar
Osmer, P. S., 1982, Astrophys. J., 253, 28.CrossRefGoogle Scholar
Osmer, P. S. et al., 1988, Proc. of workshop on Optical Surveys of Quasars.Google Scholar
Savage, A. and Bolton, J. G., 1979, Mon. Not. R. Astr. Soc., 188, 599.Google Scholar
Schmidt, M. and Green, R. F., 1983, Astrophys. J., 269, 352.CrossRefGoogle Scholar
Schneider, D. P., Schmidt, M. and Gunn, J. E., 1989a, Astron. J., 98, 1507.Google Scholar
Schneider, D. P., Schmidt, M. and Gunn, J. E., 1989b, Astron. J., 98, 1951.CrossRefGoogle Scholar
Shanks, T., Fong, R., Boyle, B. J. and Peterson, B. A., 1986, ‘Quasars’, IAU Symp. No. 119, p. 37.Google Scholar
Smith, M. G., 1981, Investigating the Universe, ed. Kahn, F. D., p. 151.Google Scholar
Warren, S. J., Hewett, P. C., Osmer, P. S. and Irwin, M. J., 1987, Nature, 330, 453.Google Scholar
Webster, R. L., Hewett, P.C. and Irwin, M. J., 1988, Astron. J., 95, 19.Google Scholar
Young, P. J., Sargent, W. L. W. and Boksenberg, A., 1982, Astrophys. J. Suppl. Ser., 48, 455.Google Scholar
Zamorani, G., Zitelli, V. and Marano, B., 1986, ‘Quasars’ IAU Symp. No. 119, p. 33.Google Scholar
Zhou, Y., Fang, D., Deng, Z. and He, X. T., 1986, Astrophys. J., 311, 578.CrossRefGoogle Scholar