Strong Redshift Clustering of Distant Galaxies
We present initial results from a redshift survey carried out with the Low Resolution Imaging Spectrograph on the 10 m W. M. Keck Telescope of a field 14.6 arcmin^2 in solid angle. In the redshift distribution of the 106 extragalactic objects in this sample we find five strong peaks, with velocity dispersions of ~500 km s^(-1). There is evidence for a nonuniform areal density of objects in at least two peaks. These peaks have characteristics (velocity dispersions, density enhancements, spacing, and spatial extent) similar to those of nearby galaxy structures (e.g., walls and clusters), and these are expected in a survey of this kind. We suggest that the prominence of these structures in our survey relative to that in other surveys can be attributed to our K selection and dense sampling.
Additional Information© 1996. The American Astronomical Society. Received 1994 January 16; accepted 1996 February 15. We are grateful to George Djorgovski, Keith Matthews, Gerry Neugebauer, Tom Soifer, and Jim Westphal for helpful conversations and to Todd Small and Wal Sargent for permission to use their data on Cor Bor prior to publication. The entire Keck user community owes a huge debt to Bev Oke, Jerry Nelson, Gerry Smith, and many other people who have worked to make the Keck Telescope a reality. We are grateful to the W. M. Keck Foundation, and particularly its president, Howard Keck, for the vision to fund the construction of the W. M. Keck Observatory.
Published - Cohen_1996_ApJ_462_L9.pdf
Accepted Version - 9602120