Abstract
We present the first high-redshift (0.3 < z < 1.1) galaxy clusters found by systematically identifying optical low surface brightness fluctuations in the background sky. Using spectra obtained with the Keck I telescope and I-band images from the Palomar 1.5 m telescope, we conclude that at least eight of the 10 candidates examined are high-redshift galaxy clusters. The identification of such clusters from low surface brightness fluctuations provides a complement to classic selection methods based on overdensities of resolved galaxies and enables us to search efficiently for rich high-redshift clusters over large areas of the sky. The detections described here are the first in a survey that covers a total of nearly 140 deg2 of the sky and should yield, if these preliminary results are representative, over 300 such clusters.
Original language | English (US) |
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Pages (from-to) | L91-L94 |
Journal | Astrophysical Journal |
Volume | 480 |
Issue number | 2 PART II |
DOIs | |
State | Published - 1997 |
Externally published | Yes |
Keywords
- Cosmology: observations
- Galaxies: clusters: general
- Galaxies: distances and redshifts
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science