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) |
|---|---|
| Journal | Astrophysical Journal |
| Volume | 480 |
| Issue number | 2 PART II |
| State | Published - 1997 |
| Externally published | Yes |
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Keywords
- Cosmology: observations
- Galaxies: clusters: general
- Galaxies: distances and redshifts
ASJC Scopus subject areas
- Space and Planetary Science
Cite this
Distant galaxy clusters identified from optical background fluctuations. / Zaritsky, Dennis F; Nelson, Amy E.; Dalcanton, Julianne J.; Gonzalez, Anthony H.
In: Astrophysical Journal, Vol. 480, No. 2 PART II, 1997.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Distant galaxy clusters identified from optical background fluctuations
AU - Zaritsky, Dennis F
AU - Nelson, Amy E.
AU - Dalcanton, Julianne J.
AU - Gonzalez, Anthony H.
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
KW - Cosmology: observations
KW - Galaxies: clusters: general
KW - Galaxies: distances and redshifts
UR - http://www.scopus.com/inward/record.url?scp=21744435006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21744435006&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:21744435006
VL - 480
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2 PART II
ER -