An IR-selected galaxy cluster at z=1.41

被引：119

作者：

Stanford, SA

Eisenhardt, PR

Brodwin, M

Gonzalez, AH

Stern, D

Jannuzi, BT

Dey, A

Brown, MJI

McKenzie, E

Elston, R

机构：

[1] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[2] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94551 USA

[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[4] Univ Florida, Dept Astron, Gainesville, FL 32611 USA

[5] Natl Opt Astron Observ, Tucson, AZ 85726 USA

[6] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

ASTROPHYSICAL JOURNAL | 2005年 / 634卷 / 02期

关键词：

galaxies : clusters : general; galaxies : evolution; galaxies : formation;

D O I：

10.1086/499045

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 1.31 < z < 1.5. Optical spectroscopy of a limited number of objects in the region shows that five galaxies within an similar to 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.

引用

页码：L129 / L132

页数：4

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