The XMM Cluster Survey: a massive galaxy cluster at z = 1.45

S. A. Stanford; A. Kathy Romer; Kivanc Sabirli; Michael Davidson; Matt Hilton; Pedro T. P. Viana; Chris A. Collins; Scott T. Kay; Andrew R. Liddle; Robert G. Mann; Christopher J. Miller; Robert C. Nichol; Michael J. West; Christopher J. Conselice; Hyron Spinrad; Daniel Stern; Kevin Bundy

doi:10.1086/506449

The XMM Cluster Survey: a massive galaxy cluster at z = 1.45

S. A. Stanford
, A. Kathy Romer
, Kivanc Sabirli
, Michael Davidson
, Matt Hilton
, Pedro T. P. Viana
, Chris A. Collins
, Scott T. Kay
, Andrew R. Liddle
, Robert G. Mann
, Christopher J. Miller
, Robert C. Nichol
, Michael J. West
, Christopher J. Conselice
, Hyron Spinrad
, Daniel Stern
, Kevin Bundy

Institute of Cosmology & Gravitation

Research output: Contribution to journal › Article › peer-review

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Abstract

We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at z = 1.45, which was found in the XMM Cluster Survey. The cluster candidate was initially identified as an extended X-ray source in archival XMM data. Optical spectroscopy shows that six galaxies within a ~60'' diameter region lie at z = 1.45 ± 0.01. Model fits to the X-ray spectra of the extended emission yield kT = 7.4^+2.7_-1.8 keV (90% confidence); if there is an undetected central X-ray point source, then kT = 6.5^+2.6_-1.8 keV. The bolometric X-ray luminosity is LX = 4.4^+0.8_-0.6 × 10⁴⁴ ergs s^-1 over a 2 Mpc radial region. The measured T_X, which is the highest for any known cluster at z > 1, suggests that this cluster is relatively massive for such a high redshift. The redshift of XMMXCS J2215.9-1738 is the highest currently known for a spectroscopically confirmed cluster of galaxies.

Original language	English
Pages (from-to)	L13-L16
Journal	The Astrophysical Journal
Volume	646
Issue number	1
Early online date	14 Jul 2006
DOIs	https://doi.org/10.1086/506449
Publication status	Published - 20 Jul 2006

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1538-4357_646_1_L13
copyright 2006. The American Astronomical Society.
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Stanford, S. A., Romer, A. K., Sabirli, K., Davidson, M., Hilton, M., Viana, P. T. P., Collins, C. A., Kay, S. T., Liddle, A. R., Mann, R. G., Miller, C. J., Nichol, R. C., West, M. J., Conselice, C. J., Spinrad, H., Stern, D., & Bundy, K. (2006). The XMM Cluster Survey: a massive galaxy cluster at z = 1.45. The Astrophysical Journal, 646(1), L13-L16. https://doi.org/10.1086/506449

@article{94dbdb56870447c8b504ffa8a46f1f4d,

title = "The XMM Cluster Survey: a massive galaxy cluster at z = 1.45",

abstract = "We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at z = 1.45, which was found in the XMM Cluster Survey. The cluster candidate was initially identified as an extended X-ray source in archival XMM data. Optical spectroscopy shows that six galaxies within a \textasciitilde{}60'' diameter region lie at z = 1.45 ± 0.01. Model fits to the X-ray spectra of the extended emission yield kT = 7.4+2.7-1.8 keV (90\% confidence); if there is an undetected central X-ray point source, then kT = 6.5+2.6-1.8 keV. The bolometric X-ray luminosity is LX = 4.4+0.8-0.6 × 1044 ergs s-1 over a 2 Mpc radial region. The measured TX, which is the highest for any known cluster at z > 1, suggests that this cluster is relatively massive for such a high redshift. The redshift of XMMXCS J2215.9-1738 is the highest currently known for a spectroscopically confirmed cluster of galaxies.",

author = "Stanford, \{S. A.\} and Romer, \{A. Kathy\} and Kivanc Sabirli and Michael Davidson and Matt Hilton and Viana, \{Pedro T. P.\} and Collins, \{Chris A.\} and Kay, \{Scott T.\} and Liddle, \{Andrew R.\} and Mann, \{Robert G.\} and Miller, \{Christopher J.\} and Nichol, \{Robert C.\} and West, \{Michael J.\} and Conselice, \{Christopher J.\} and Hyron Spinrad and Daniel Stern and Kevin Bundy",

year = "2006",

month = jul,

day = "20",

doi = "10.1086/506449",

language = "English",

volume = "646",

pages = "L13--L16",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

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TY - JOUR

T1 - The XMM Cluster Survey

T2 - a massive galaxy cluster at z = 1.45

AU - Stanford, S. A.

AU - Romer, A. Kathy

AU - Sabirli, Kivanc

AU - Davidson, Michael

AU - Hilton, Matt

AU - Viana, Pedro T. P.

AU - Collins, Chris A.

AU - Kay, Scott T.

AU - Liddle, Andrew R.

AU - Mann, Robert G.

AU - Miller, Christopher J.

AU - Nichol, Robert C.

AU - West, Michael J.

AU - Conselice, Christopher J.

AU - Spinrad, Hyron

AU - Stern, Daniel

AU - Bundy, Kevin

PY - 2006/7/20

Y1 - 2006/7/20

N2 - We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at z = 1.45, which was found in the XMM Cluster Survey. The cluster candidate was initially identified as an extended X-ray source in archival XMM data. Optical spectroscopy shows that six galaxies within a ~60'' diameter region lie at z = 1.45 ± 0.01. Model fits to the X-ray spectra of the extended emission yield kT = 7.4+2.7-1.8 keV (90% confidence); if there is an undetected central X-ray point source, then kT = 6.5+2.6-1.8 keV. The bolometric X-ray luminosity is LX = 4.4+0.8-0.6 × 1044 ergs s-1 over a 2 Mpc radial region. The measured TX, which is the highest for any known cluster at z > 1, suggests that this cluster is relatively massive for such a high redshift. The redshift of XMMXCS J2215.9-1738 is the highest currently known for a spectroscopically confirmed cluster of galaxies.

AB - We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at z = 1.45, which was found in the XMM Cluster Survey. The cluster candidate was initially identified as an extended X-ray source in archival XMM data. Optical spectroscopy shows that six galaxies within a ~60'' diameter region lie at z = 1.45 ± 0.01. Model fits to the X-ray spectra of the extended emission yield kT = 7.4+2.7-1.8 keV (90% confidence); if there is an undetected central X-ray point source, then kT = 6.5+2.6-1.8 keV. The bolometric X-ray luminosity is LX = 4.4+0.8-0.6 × 1044 ergs s-1 over a 2 Mpc radial region. The measured TX, which is the highest for any known cluster at z > 1, suggests that this cluster is relatively massive for such a high redshift. The redshift of XMMXCS J2215.9-1738 is the highest currently known for a spectroscopically confirmed cluster of galaxies.

U2 - 10.1086/506449

DO - 10.1086/506449

M3 - Article

SN - 0004-637X

VL - 646

SP - L13-L16

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

ER -

The XMM Cluster Survey: a massive galaxy cluster at z = 1.45

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