Distant galaxy clusters identified from optical background fluctuations

Dennis F Zaritsky, Amy E. Nelson, Julianne J. Dalcanton, Anthony H. Gonzalez

Research output: Contribution to journalArticle

29 Citations (Scopus)

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 languageEnglish (US)
JournalAstrophysical Journal
Volume480
Issue number2 PART II
StatePublished - 1997
Externally publishedYes

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galaxies
sky
brightness
telescopes
complement
method
detection

Keywords

  • Cosmology: observations
  • Galaxies: clusters: general
  • Galaxies: distances and redshifts

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Zaritsky, D. F., Nelson, A. E., Dalcanton, J. J., & Gonzalez, A. H. (1997). Distant galaxy clusters identified from optical background fluctuations. Astrophysical Journal, 480(2 PART II).

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 journalArticle

Zaritsky, DF, Nelson, AE, Dalcanton, JJ & Gonzalez, AH 1997, 'Distant galaxy clusters identified from optical background fluctuations', Astrophysical Journal, vol. 480, no. 2 PART II.
Zaritsky, Dennis F ; Nelson, Amy E. ; Dalcanton, Julianne J. ; Gonzalez, Anthony H. / Distant galaxy clusters identified from optical background fluctuations. In: Astrophysical Journal. 1997 ; Vol. 480, No. 2 PART II.
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