Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504

L. Guennou, A. Biviano, C. Adami, M. Limousin, G. B. Lima Neto, G. A. Mamon, M. P. Ulmer, R. Gavazzi, E. S. Cypriano, F. Durret, D. Clowe, V. Lebrun, S. Allam, S. Basa, C. Benoist, A. Cappi, C. Halliday, O. Ilbert, D. Johnston, E. JulloD. Just, J. M. Kubo, I. Márquez, P. Marshall, N. Martinet, S. Maurogordato, A. Mazure, K. J. Murphy, H. Plana, F. Rostagni, D. Russeil, M. Schirmer, T. Schrabback, E. Slezak, D. Tucker, Dennis F Zaritsky, B. Ziegler

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Context. Constraints on the mass distribution in high-redshift clusters of galaxies are currently not very strong. Aims. We aim to constrain the mass profile, M(r), and dynamical status of the z ≃ 0.8 LCDCS 0504 cluster of galaxies that is characterized by prominent giant gravitational arcs near its center. Methods. Our analysis is based on deep X-ray, optical, and infrared imaging as well as optical spectroscopy, collected with various instruments, which we complemented with archival data. We modeled the mass distribution of the cluster with three different mass density profiles, whose parameters were constrained by the strong lensing features of the inner cluster region, by the X-ray emission from the intracluster medium, and by the kinematics of 71 cluster members. Results. We obtain consistent M(r) determinations from three methods based on kinematics (dispersion-kurtosis, caustics, and MAMPOSSt), out to the cluster virial radius, ≃ 1.3 Mpc and beyond. The mass profile inferred by the strong lensing analysis in the central cluster region is slightly higher than, but still consistent with, the kinematics estimate. On the other hand, the X-ray based M(r) is significantly lower than the kinematics and strong lensing estimates. Theoretical predictions from ΛCDM cosmology for the concentration-mass relation agree with our observational results, when taking into account the uncertainties in the observational and theoretical estimates. There appears to be a central deficit in the intracluster gas mass fraction compared with nearby clusters. Conclusions. Despite the relaxed appearance of this cluster, the determinations of its mass profile by different probes show substantial discrepancies, the origin of which remains to be determined. The extension of a dynamical analysis similar to that of other clusters of the DAFT/FADA survey with multiwavelength data of sufficient quality will allow shedding light on the possible systematics that affect the determination of mass profiles of high-z clusters, which is possibly related to our incomplete understanding of intracluster baryon physics.

Original languageEnglish (US)
Article numberA149
JournalAstronomy and Astrophysics
Volume566
DOIs
StatePublished - 2014

Fingerprint

galaxies
profiles
kinematics
mass distribution
estimates
cosmology
kurtosis
x rays
physics
spectroscopy
probe
baryons
alkalies
arcs
prediction
radii
gas
probes
analysis
predictions

Keywords

  • Galaxies: clusters: general
  • Galaxies: kinematics and dynamics

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Guennou, L., Biviano, A., Adami, C., Limousin, M., Lima Neto, G. B., Mamon, G. A., ... Ziegler, B. (2014). Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504. Astronomy and Astrophysics, 566, [A149]. https://doi.org/10.1051/0004-6361/201322447

Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504. / Guennou, L.; Biviano, A.; Adami, C.; Limousin, M.; Lima Neto, G. B.; Mamon, G. A.; Ulmer, M. P.; Gavazzi, R.; Cypriano, E. S.; Durret, F.; Clowe, D.; Lebrun, V.; Allam, S.; Basa, S.; Benoist, C.; Cappi, A.; Halliday, C.; Ilbert, O.; Johnston, D.; Jullo, E.; Just, D.; Kubo, J. M.; Márquez, I.; Marshall, P.; Martinet, N.; Maurogordato, S.; Mazure, A.; Murphy, K. J.; Plana, H.; Rostagni, F.; Russeil, D.; Schirmer, M.; Schrabback, T.; Slezak, E.; Tucker, D.; Zaritsky, Dennis F; Ziegler, B.

In: Astronomy and Astrophysics, Vol. 566, A149, 2014.

Research output: Contribution to journalArticle

Guennou, L, Biviano, A, Adami, C, Limousin, M, Lima Neto, GB, Mamon, GA, Ulmer, MP, Gavazzi, R, Cypriano, ES, Durret, F, Clowe, D, Lebrun, V, Allam, S, Basa, S, Benoist, C, Cappi, A, Halliday, C, Ilbert, O, Johnston, D, Jullo, E, Just, D, Kubo, JM, Márquez, I, Marshall, P, Martinet, N, Maurogordato, S, Mazure, A, Murphy, KJ, Plana, H, Rostagni, F, Russeil, D, Schirmer, M, Schrabback, T, Slezak, E, Tucker, D, Zaritsky, DF & Ziegler, B 2014, 'Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504', Astronomy and Astrophysics, vol. 566, A149. https://doi.org/10.1051/0004-6361/201322447
Guennou, L. ; Biviano, A. ; Adami, C. ; Limousin, M. ; Lima Neto, G. B. ; Mamon, G. A. ; Ulmer, M. P. ; Gavazzi, R. ; Cypriano, E. S. ; Durret, F. ; Clowe, D. ; Lebrun, V. ; Allam, S. ; Basa, S. ; Benoist, C. ; Cappi, A. ; Halliday, C. ; Ilbert, O. ; Johnston, D. ; Jullo, E. ; Just, D. ; Kubo, J. M. ; Márquez, I. ; Marshall, P. ; Martinet, N. ; Maurogordato, S. ; Mazure, A. ; Murphy, K. J. ; Plana, H. ; Rostagni, F. ; Russeil, D. ; Schirmer, M. ; Schrabback, T. ; Slezak, E. ; Tucker, D. ; Zaritsky, Dennis F ; Ziegler, B. / Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504. In: Astronomy and Astrophysics. 2014 ; Vol. 566.
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title = "Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504",
abstract = "Context. Constraints on the mass distribution in high-redshift clusters of galaxies are currently not very strong. Aims. We aim to constrain the mass profile, M(r), and dynamical status of the z ≃ 0.8 LCDCS 0504 cluster of galaxies that is characterized by prominent giant gravitational arcs near its center. Methods. Our analysis is based on deep X-ray, optical, and infrared imaging as well as optical spectroscopy, collected with various instruments, which we complemented with archival data. We modeled the mass distribution of the cluster with three different mass density profiles, whose parameters were constrained by the strong lensing features of the inner cluster region, by the X-ray emission from the intracluster medium, and by the kinematics of 71 cluster members. Results. We obtain consistent M(r) determinations from three methods based on kinematics (dispersion-kurtosis, caustics, and MAMPOSSt), out to the cluster virial radius, ≃ 1.3 Mpc and beyond. The mass profile inferred by the strong lensing analysis in the central cluster region is slightly higher than, but still consistent with, the kinematics estimate. On the other hand, the X-ray based M(r) is significantly lower than the kinematics and strong lensing estimates. Theoretical predictions from ΛCDM cosmology for the concentration-mass relation agree with our observational results, when taking into account the uncertainties in the observational and theoretical estimates. There appears to be a central deficit in the intracluster gas mass fraction compared with nearby clusters. Conclusions. Despite the relaxed appearance of this cluster, the determinations of its mass profile by different probes show substantial discrepancies, the origin of which remains to be determined. The extension of a dynamical analysis similar to that of other clusters of the DAFT/FADA survey with multiwavelength data of sufficient quality will allow shedding light on the possible systematics that affect the determination of mass profiles of high-z clusters, which is possibly related to our incomplete understanding of intracluster baryon physics.",
keywords = "Galaxies: clusters: general, Galaxies: kinematics and dynamics",
author = "L. Guennou and A. Biviano and C. Adami and M. Limousin and {Lima Neto}, {G. B.} and Mamon, {G. A.} and Ulmer, {M. P.} and R. Gavazzi and Cypriano, {E. S.} and F. Durret and D. Clowe and V. Lebrun and S. Allam and S. Basa and C. Benoist and A. Cappi and C. Halliday and O. Ilbert and D. Johnston and E. Jullo and D. Just and Kubo, {J. M.} and I. M{\'a}rquez and P. Marshall and N. Martinet and S. Maurogordato and A. Mazure and Murphy, {K. J.} and H. Plana and F. Rostagni and D. Russeil and M. Schirmer and T. Schrabback and E. Slezak and D. Tucker and Zaritsky, {Dennis F} and B. Ziegler",
year = "2014",
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language = "English (US)",
volume = "566",
journal = "Astronomy and Astrophysics",
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TY - JOUR

T1 - Mass profile and dynamical status of the z ∼ 0.8 galaxy cluster LCDCS 0504

AU - Guennou, L.

AU - Biviano, A.

AU - Adami, C.

AU - Limousin, M.

AU - Lima Neto, G. B.

AU - Mamon, G. A.

AU - Ulmer, M. P.

AU - Gavazzi, R.

AU - Cypriano, E. S.

AU - Durret, F.

AU - Clowe, D.

AU - Lebrun, V.

AU - Allam, S.

AU - Basa, S.

AU - Benoist, C.

AU - Cappi, A.

AU - Halliday, C.

AU - Ilbert, O.

AU - Johnston, D.

AU - Jullo, E.

AU - Just, D.

AU - Kubo, J. M.

AU - Márquez, I.

AU - Marshall, P.

AU - Martinet, N.

AU - Maurogordato, S.

AU - Mazure, A.

AU - Murphy, K. J.

AU - Plana, H.

AU - Rostagni, F.

AU - Russeil, D.

AU - Schirmer, M.

AU - Schrabback, T.

AU - Slezak, E.

AU - Tucker, D.

AU - Zaritsky, Dennis F

AU - Ziegler, B.

PY - 2014

Y1 - 2014

N2 - Context. Constraints on the mass distribution in high-redshift clusters of galaxies are currently not very strong. Aims. We aim to constrain the mass profile, M(r), and dynamical status of the z ≃ 0.8 LCDCS 0504 cluster of galaxies that is characterized by prominent giant gravitational arcs near its center. Methods. Our analysis is based on deep X-ray, optical, and infrared imaging as well as optical spectroscopy, collected with various instruments, which we complemented with archival data. We modeled the mass distribution of the cluster with three different mass density profiles, whose parameters were constrained by the strong lensing features of the inner cluster region, by the X-ray emission from the intracluster medium, and by the kinematics of 71 cluster members. Results. We obtain consistent M(r) determinations from three methods based on kinematics (dispersion-kurtosis, caustics, and MAMPOSSt), out to the cluster virial radius, ≃ 1.3 Mpc and beyond. The mass profile inferred by the strong lensing analysis in the central cluster region is slightly higher than, but still consistent with, the kinematics estimate. On the other hand, the X-ray based M(r) is significantly lower than the kinematics and strong lensing estimates. Theoretical predictions from ΛCDM cosmology for the concentration-mass relation agree with our observational results, when taking into account the uncertainties in the observational and theoretical estimates. There appears to be a central deficit in the intracluster gas mass fraction compared with nearby clusters. Conclusions. Despite the relaxed appearance of this cluster, the determinations of its mass profile by different probes show substantial discrepancies, the origin of which remains to be determined. The extension of a dynamical analysis similar to that of other clusters of the DAFT/FADA survey with multiwavelength data of sufficient quality will allow shedding light on the possible systematics that affect the determination of mass profiles of high-z clusters, which is possibly related to our incomplete understanding of intracluster baryon physics.

AB - Context. Constraints on the mass distribution in high-redshift clusters of galaxies are currently not very strong. Aims. We aim to constrain the mass profile, M(r), and dynamical status of the z ≃ 0.8 LCDCS 0504 cluster of galaxies that is characterized by prominent giant gravitational arcs near its center. Methods. Our analysis is based on deep X-ray, optical, and infrared imaging as well as optical spectroscopy, collected with various instruments, which we complemented with archival data. We modeled the mass distribution of the cluster with three different mass density profiles, whose parameters were constrained by the strong lensing features of the inner cluster region, by the X-ray emission from the intracluster medium, and by the kinematics of 71 cluster members. Results. We obtain consistent M(r) determinations from three methods based on kinematics (dispersion-kurtosis, caustics, and MAMPOSSt), out to the cluster virial radius, ≃ 1.3 Mpc and beyond. The mass profile inferred by the strong lensing analysis in the central cluster region is slightly higher than, but still consistent with, the kinematics estimate. On the other hand, the X-ray based M(r) is significantly lower than the kinematics and strong lensing estimates. Theoretical predictions from ΛCDM cosmology for the concentration-mass relation agree with our observational results, when taking into account the uncertainties in the observational and theoretical estimates. There appears to be a central deficit in the intracluster gas mass fraction compared with nearby clusters. Conclusions. Despite the relaxed appearance of this cluster, the determinations of its mass profile by different probes show substantial discrepancies, the origin of which remains to be determined. The extension of a dynamical analysis similar to that of other clusters of the DAFT/FADA survey with multiwavelength data of sufficient quality will allow shedding light on the possible systematics that affect the determination of mass profiles of high-z clusters, which is possibly related to our incomplete understanding of intracluster baryon physics.

KW - Galaxies: clusters: general

KW - Galaxies: kinematics and dynamics

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