Work

X-RAY EMISSION FROM TWO INFRARED-SELECTED GALAXY CLUSTERS ATz> 1.4 IN THE IRAC SHALLOW CLUSTER SURVEY

Year: 2011

Type: article

Abstract: We report the X-ray detection of two z > 1.4 infrared-selected galaxy clusters from the IRAC Shallow Cluster Survey (ISCS). We present new data from the Hubble Space Telescope and the W. M. Keck Observatory that spectroscopically confirm cluster ISCS J1432.4+3250 at z = 1.49, the most distant of 18 confirmed z > 1 clusters in the ISCS to date. We also present new spectroscopy for ISCS J1438.1+3414, previously reported at z = 1.41, and measure its dynamical mass. Clusters ISCS J1432.4+3250 and ISCS J1438.1+3414 are detected in 36 ks and 143 ks Chandra exposures at significances of 5.2σ and 9.7σ, from which we measure total masses of and 14.35 +0.14 − 0.11 , respectively. The consistency of the X-ray and dynamical properties of these high-redshift clusters further demonstrates that the ISCS is robustly detecting massive clusters to at least z = 1.5.

Source: The Astrophysical Journal

DOI: 10.1088/0004-637x/732/1/33

Authors: M. Brodwin, D. Stern, A. Vikhlinin, S. A. Stanford, A. H. Gonzalez, P. R. Eisenhardt, M. L. N. Ashby, M. Bautz, A. Dey, W. R. Forman, D. Gettings, R. C. Hickox, B. T. Jannuzi, C. Jones, C. Mancone, E. D. Miller, L. A. Moustakas, J. Ruel, G. Snyder, G. Zeimann

Institutions: Center for Astrophysics Harvard & Smithsonian, California Institute of Technology, Jet Propulsion Laboratory, Lawrence Livermore National Laboratory, University of California, Davis, University of Florida, Massachusetts Institute of Technology, Durham University, Harvard University

Language: English

Topic: Galaxies: Formation, Evolution, Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, W. M. Keck Foundation, California Institute of Technology, Space Telescope Science Institute, Lawrence Livermore National Laboratory

Awards: G1702950523, G433322167, G4445487076, G4518818167, G58316358, G62358869, G6273510985, G6445123630, G6756316859, G767601387, G8210229802

OpenAlex ID: W2055511348

FWCI: 6.397

Cites: 51

Cited by: 66

Related to: