An IR-selected galaxy cluster at z = 1.41

S. A. Stanford, Peter R. Eisenhardt, Mark Brodwin, Anthony H. Gonzalez, Daniel Stern, B. T. Jannuzi, Arjun Dey, Michael J.I. Brown, Eric Mckenzie, Richard Elston

Research output: Contribution to journalArticlepeer-review

112 Scopus citations


We report the discovery of a galaxy cluster at z = 1.41. ISCS J143809+341419 was found in the Spitzer/IRAC Shallow Survey of the Bootes field in the NOAO Deep Wide-Field Survey carried out using IRAC. The cluster candidate was initially identified as a high-density region of objects with photometric redshifts in the range 1.3 < z < 1.5. Optical spectroscopy of a limited number of objects in the region shows that five galaxies within an ∼120″ diameter region lie at z = 1.41 ± 0.01. Most of these member galaxies have broadband colors consistent with the expected spectral energy distribution of a passively evolving elliptical galaxy formed at high redshift. The redshift of ISCS J143809+341419 is the highest currently known for a spectroscopically confirmed cluster of galaxies.

Original languageEnglish (US)
Pages (from-to)L129-L132
JournalAstrophysical Journal
Issue number2 II
StatePublished - Dec 1 2005


  • Galaxies: clusters: general
  • Galaxies: evolution
  • Galaxies: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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