Galaxy clusters with QSOS at redshift 1.1

Details Galaxy clusters with QSOS at redshift 1.1 Galaxy clusters with QSOS at redshift 1.1

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.1324h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 106, no. 4, p. 1324-1329.

Astronomy and Astrophysics

Astronomy

21

Galactic Clusters, Quasars, Red Shift, Stellar Color, Stellar Spectra, Astronomical Spectroscopy, Emission Spectra, Radio Galaxies, Sky Surveys (Astronomy)

Scientific paper

We report imaging of z approximately 1.1 QSO fields with R, I, and 75 A narrow-band filters tuned to the redshift wavelength of forbidden O II 3727 A. The data presently in hand cover four radio-quiet QSOs and one radio loud, as well as a radio galaxy and a radio QSO at z of about 0.6, where the narrow-band filter isolates filtering O III 5007 A. In this paper, we give details on the radio-loud and one of the radio-quiet z 1.1 QSOs. In both, we find an excess of faint galaxies near the QSO, many of which are very blue. We also find that several of these have emission-line detections, suggesting they are at the same redshift as the QSO. We discuss the statistics of these objects and conclude that we are seeing clusters of compact galaxies at z = 1.1, most of which are starbursting. Preliminary analyses of all our fields suggest that they also contain similar clusters.

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