The XXL Survey: XVII. X-ray and Sunyaev-Zel'dovich properties of the redshift 2.0 galaxy cluster XLSSC 122

A. B. Mantz, Z. Abdulla, S. W. Allen, J. E. Carlstrom, C. H.A. Logan, Daniel P Marrone, B. J. Maughan, J. Willis, F. Pacaud, M. Pierre

Research output: Contribution to journalArticle

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Abstract

We present results from a 100 ks XMM-Newton observation of galaxy cluster XLSSC 122, the first massive cluster discovered through its X-ray emission at z ≈ 2. The data provide the first precise constraints on the bulk thermodynamic properties of such a distant cluster, as well as an X-ray spectroscopic confirmation of its redshift. We measure an average temperature of kT = 5.0 ± 0.7 keV; a metallicity with respect to solar of Z/Zo = 0.33-0.17 +0.19, consistent with lower-redshift clusters; and a redshift of z = 1.99+0.07 -0.06 z=1.99-0.06+0.07, consistent with the earlier photo-z estimate. The measured gas density profile leads to a mass estimate at r500 of M500 = (6.3 ± 1.5) × 1013 Mo. From CARMA 30 GHz data, we measure the spherically integrated Compton parameter within r500 to be Y500 = (3.6 ± 0.4) × 10-12. We compare the measured properties of XLSSC 122 to lower-redshift cluster samples, and find good agreement when assuming the simplest (self-similar) form for the evolution of cluster scaling relations. While a single cluster provides limited information, this result suggests that the evolution of the intracluster medium in the most massive, well-developed clusters is remarkably simple, even out to the highest redshifts where they have been found. At the same time, our data reaffirm the previously reported spatial offset between the centres of the X-ray and SZ signals for XLSSC 122, suggesting a disturbed configuration. Higher spatial resolution data could thus provide greater insights into the internal dynamics of this system.

Original languageEnglish (US)
Article numberA2
JournalAstronomy and Astrophysics
Volume620
DOIs
StatePublished - Dec 1 2018

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galaxies
x rays
thermodynamic property
spatial resolution
gas density
XMM-Newton telescope
estimates
gas
newton
metallicity
thermodynamic properties
temperature
scaling
high resolution
profiles
configurations
parameter

Keywords

  • Galaxies: clusters: individual: XLSSC 122
  • Galaxies: clusters: intracluster medium
  • X-rays: galaxies: clusters

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

The XXL Survey : XVII. X-ray and Sunyaev-Zel'dovich properties of the redshift 2.0 galaxy cluster XLSSC 122. / Mantz, A. B.; Abdulla, Z.; Allen, S. W.; Carlstrom, J. E.; Logan, C. H.A.; Marrone, Daniel P; Maughan, B. J.; Willis, J.; Pacaud, F.; Pierre, M.

In: Astronomy and Astrophysics, Vol. 620, A2, 01.12.2018.

Research output: Contribution to journalArticle

Mantz, AB, Abdulla, Z, Allen, SW, Carlstrom, JE, Logan, CHA, Marrone, DP, Maughan, BJ, Willis, J, Pacaud, F & Pierre, M 2018, 'The XXL Survey: XVII. X-ray and Sunyaev-Zel'dovich properties of the redshift 2.0 galaxy cluster XLSSC 122', Astronomy and Astrophysics, vol. 620, A2. https://doi.org/10.1051/0004-6361/201630096
Mantz, A. B. ; Abdulla, Z. ; Allen, S. W. ; Carlstrom, J. E. ; Logan, C. H.A. ; Marrone, Daniel P ; Maughan, B. J. ; Willis, J. ; Pacaud, F. ; Pierre, M. / The XXL Survey : XVII. X-ray and Sunyaev-Zel'dovich properties of the redshift 2.0 galaxy cluster XLSSC 122. In: Astronomy and Astrophysics. 2018 ; Vol. 620.
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abstract = "We present results from a 100 ks XMM-Newton observation of galaxy cluster XLSSC 122, the first massive cluster discovered through its X-ray emission at z ≈ 2. The data provide the first precise constraints on the bulk thermodynamic properties of such a distant cluster, as well as an X-ray spectroscopic confirmation of its redshift. We measure an average temperature of kT = 5.0 ± 0.7 keV; a metallicity with respect to solar of Z/Zo = 0.33-0.17 +0.19, consistent with lower-redshift clusters; and a redshift of z = 1.99+0.07 -0.06 z=1.99-0.06+0.07, consistent with the earlier photo-z estimate. The measured gas density profile leads to a mass estimate at r500 of M500 = (6.3 ± 1.5) × 1013 Mo. From CARMA 30 GHz data, we measure the spherically integrated Compton parameter within r500 to be Y500 = (3.6 ± 0.4) × 10-12. We compare the measured properties of XLSSC 122 to lower-redshift cluster samples, and find good agreement when assuming the simplest (self-similar) form for the evolution of cluster scaling relations. While a single cluster provides limited information, this result suggests that the evolution of the intracluster medium in the most massive, well-developed clusters is remarkably simple, even out to the highest redshifts where they have been found. At the same time, our data reaffirm the previously reported spatial offset between the centres of the X-ray and SZ signals for XLSSC 122, suggesting a disturbed configuration. Higher spatial resolution data could thus provide greater insights into the internal dynamics of this system.",
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AU - Allen, S. W.

AU - Carlstrom, J. E.

AU - Logan, C. H.A.

AU - Marrone, Daniel P

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AU - Pacaud, F.

AU - Pierre, M.

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AB - We present results from a 100 ks XMM-Newton observation of galaxy cluster XLSSC 122, the first massive cluster discovered through its X-ray emission at z ≈ 2. The data provide the first precise constraints on the bulk thermodynamic properties of such a distant cluster, as well as an X-ray spectroscopic confirmation of its redshift. We measure an average temperature of kT = 5.0 ± 0.7 keV; a metallicity with respect to solar of Z/Zo = 0.33-0.17 +0.19, consistent with lower-redshift clusters; and a redshift of z = 1.99+0.07 -0.06 z=1.99-0.06+0.07, consistent with the earlier photo-z estimate. The measured gas density profile leads to a mass estimate at r500 of M500 = (6.3 ± 1.5) × 1013 Mo. From CARMA 30 GHz data, we measure the spherically integrated Compton parameter within r500 to be Y500 = (3.6 ± 0.4) × 10-12. We compare the measured properties of XLSSC 122 to lower-redshift cluster samples, and find good agreement when assuming the simplest (self-similar) form for the evolution of cluster scaling relations. While a single cluster provides limited information, this result suggests that the evolution of the intracluster medium in the most massive, well-developed clusters is remarkably simple, even out to the highest redshifts where they have been found. At the same time, our data reaffirm the previously reported spatial offset between the centres of the X-ray and SZ signals for XLSSC 122, suggesting a disturbed configuration. Higher spatial resolution data could thus provide greater insights into the internal dynamics of this system.

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