Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys

Myung Kook Jee, R. L. White, N. Benítez, H. C. Ford, J. P. Blakeslee, P. Rosati, R. Demarco, G. D. Illingworth

Research output: Contribution to journalReview article

74 Citations (Scopus)

Abstract

We present a weak-lensing analysis of the X-ray-luminous cluster CL 0152-1357 at z≃0.84 using Hubble Space Telescope/Advanced Camera for Surveys (ACS) observations. The unparalleled resolution and sensitivity of ACS enable us to measure weakly distorted, faint background galaxies to the extent that the number density reaches ∼175 arcmin-2. The point-spread function (PSF) of ACS has a complicated shape that also varies across the field. We construct a PSF model for ACS from an extensive investigation of 47 Tuc stars in a modestly crowded region. We show that this model PSF excellently describes the PSF variation pattern in the cluster observation when a slight adjustment of ellipticity is applied. The high number density of source galaxies and the accurate removal of the PSF effect through moment-based deconvolution allow us to restore the dark matter distribution of the cluster in great detail. The direct comparison of the mass map with the X-ray morphology from Chandra observations shows that the two peaks of intracluster medium traced by X-ray emission are lagging behind the corresponding dark matter clumps, indicative of an ongoing merger. The overall mass profile of the cluster can be well described by an NFW profile with a scale radius of rs = 309±45 kpc and a concentration parameter of c = 3.7±0.5. The mass estimates from the lensing analysis are consistent with those from X-ray and Sunyaev-Zel'dovich analyses. The predicted velocity dispersion is also in good agreement with the spectroscopic measurement from VLT observations. In the adopted cosmology where ΩM = 0.27, ΩA = 0.73, and h = 0.71, the total projected mass and the mass-to-light ratio within 1 Mpc are estimated to be (4.92±0.44) × 1014 M and 95 ± 8 M/LB⊙, respectively.

Original languageEnglish
Pages (from-to)46-67
Number of pages22
JournalAstrophysical Journal
Volume618
Issue number1 I
DOIs
Publication statusPublished - 2005 Jan 1

Fingerprint

point spread functions
cameras
dark matter
x rays
galaxies
mass to light ratios
ellipticity
clumps
deconvolution
cosmology
profiles
Hubble Space Telescope
merger
adjusting
analysis
moments
stars
radii
sensitivity
estimates

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Jee, M. K., White, R. L., Benítez, N., Ford, H. C., Blakeslee, J. P., Rosati, P., ... Illingworth, G. D. (2005). Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys. Astrophysical Journal, 618(1 I), 46-67. https://doi.org/10.1086/425912
Jee, Myung Kook ; White, R. L. ; Benítez, N. ; Ford, H. C. ; Blakeslee, J. P. ; Rosati, P. ; Demarco, R. ; Illingworth, G. D. / Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys. In: Astrophysical Journal. 2005 ; Vol. 618, No. 1 I. pp. 46-67.
@article{714607ab02884120911ad61b04cef197,
title = "Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys",
abstract = "We present a weak-lensing analysis of the X-ray-luminous cluster CL 0152-1357 at z≃0.84 using Hubble Space Telescope/Advanced Camera for Surveys (ACS) observations. The unparalleled resolution and sensitivity of ACS enable us to measure weakly distorted, faint background galaxies to the extent that the number density reaches ∼175 arcmin-2. The point-spread function (PSF) of ACS has a complicated shape that also varies across the field. We construct a PSF model for ACS from an extensive investigation of 47 Tuc stars in a modestly crowded region. We show that this model PSF excellently describes the PSF variation pattern in the cluster observation when a slight adjustment of ellipticity is applied. The high number density of source galaxies and the accurate removal of the PSF effect through moment-based deconvolution allow us to restore the dark matter distribution of the cluster in great detail. The direct comparison of the mass map with the X-ray morphology from Chandra observations shows that the two peaks of intracluster medium traced by X-ray emission are lagging behind the corresponding dark matter clumps, indicative of an ongoing merger. The overall mass profile of the cluster can be well described by an NFW profile with a scale radius of rs = 309±45 kpc and a concentration parameter of c = 3.7±0.5. The mass estimates from the lensing analysis are consistent with those from X-ray and Sunyaev-Zel'dovich analyses. The predicted velocity dispersion is also in good agreement with the spectroscopic measurement from VLT observations. In the adopted cosmology where ΩM = 0.27, ΩA = 0.73, and h = 0.71, the total projected mass and the mass-to-light ratio within 1 Mpc are estimated to be (4.92±0.44) × 1014 M⊙ and 95 ± 8 M⊙/LB⊙, respectively.",
author = "Jee, {Myung Kook} and White, {R. L.} and N. Ben{\'i}tez and Ford, {H. C.} and Blakeslee, {J. P.} and P. Rosati and R. Demarco and Illingworth, {G. D.}",
year = "2005",
month = "1",
day = "1",
doi = "10.1086/425912",
language = "English",
volume = "618",
pages = "46--67",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1 I",

}

Jee, MK, White, RL, Benítez, N, Ford, HC, Blakeslee, JP, Rosati, P, Demarco, R & Illingworth, GD 2005, 'Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys', Astrophysical Journal, vol. 618, no. 1 I, pp. 46-67. https://doi.org/10.1086/425912

Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys. / Jee, Myung Kook; White, R. L.; Benítez, N.; Ford, H. C.; Blakeslee, J. P.; Rosati, P.; Demarco, R.; Illingworth, G. D.

In: Astrophysical Journal, Vol. 618, No. 1 I, 01.01.2005, p. 46-67.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Weak-lensing analysis of the z≃0.8 cluster CL 0152-1357 with the advanced camera for surveys

AU - Jee, Myung Kook

AU - White, R. L.

AU - Benítez, N.

AU - Ford, H. C.

AU - Blakeslee, J. P.

AU - Rosati, P.

AU - Demarco, R.

AU - Illingworth, G. D.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - We present a weak-lensing analysis of the X-ray-luminous cluster CL 0152-1357 at z≃0.84 using Hubble Space Telescope/Advanced Camera for Surveys (ACS) observations. The unparalleled resolution and sensitivity of ACS enable us to measure weakly distorted, faint background galaxies to the extent that the number density reaches ∼175 arcmin-2. The point-spread function (PSF) of ACS has a complicated shape that also varies across the field. We construct a PSF model for ACS from an extensive investigation of 47 Tuc stars in a modestly crowded region. We show that this model PSF excellently describes the PSF variation pattern in the cluster observation when a slight adjustment of ellipticity is applied. The high number density of source galaxies and the accurate removal of the PSF effect through moment-based deconvolution allow us to restore the dark matter distribution of the cluster in great detail. The direct comparison of the mass map with the X-ray morphology from Chandra observations shows that the two peaks of intracluster medium traced by X-ray emission are lagging behind the corresponding dark matter clumps, indicative of an ongoing merger. The overall mass profile of the cluster can be well described by an NFW profile with a scale radius of rs = 309±45 kpc and a concentration parameter of c = 3.7±0.5. The mass estimates from the lensing analysis are consistent with those from X-ray and Sunyaev-Zel'dovich analyses. The predicted velocity dispersion is also in good agreement with the spectroscopic measurement from VLT observations. In the adopted cosmology where ΩM = 0.27, ΩA = 0.73, and h = 0.71, the total projected mass and the mass-to-light ratio within 1 Mpc are estimated to be (4.92±0.44) × 1014 M⊙ and 95 ± 8 M⊙/LB⊙, respectively.

AB - We present a weak-lensing analysis of the X-ray-luminous cluster CL 0152-1357 at z≃0.84 using Hubble Space Telescope/Advanced Camera for Surveys (ACS) observations. The unparalleled resolution and sensitivity of ACS enable us to measure weakly distorted, faint background galaxies to the extent that the number density reaches ∼175 arcmin-2. The point-spread function (PSF) of ACS has a complicated shape that also varies across the field. We construct a PSF model for ACS from an extensive investigation of 47 Tuc stars in a modestly crowded region. We show that this model PSF excellently describes the PSF variation pattern in the cluster observation when a slight adjustment of ellipticity is applied. The high number density of source galaxies and the accurate removal of the PSF effect through moment-based deconvolution allow us to restore the dark matter distribution of the cluster in great detail. The direct comparison of the mass map with the X-ray morphology from Chandra observations shows that the two peaks of intracluster medium traced by X-ray emission are lagging behind the corresponding dark matter clumps, indicative of an ongoing merger. The overall mass profile of the cluster can be well described by an NFW profile with a scale radius of rs = 309±45 kpc and a concentration parameter of c = 3.7±0.5. The mass estimates from the lensing analysis are consistent with those from X-ray and Sunyaev-Zel'dovich analyses. The predicted velocity dispersion is also in good agreement with the spectroscopic measurement from VLT observations. In the adopted cosmology where ΩM = 0.27, ΩA = 0.73, and h = 0.71, the total projected mass and the mass-to-light ratio within 1 Mpc are estimated to be (4.92±0.44) × 1014 M⊙ and 95 ± 8 M⊙/LB⊙, respectively.

UR - http://www.scopus.com/inward/record.url?scp=13944265643&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=13944265643&partnerID=8YFLogxK

U2 - 10.1086/425912

DO - 10.1086/425912

M3 - Review article

VL - 618

SP - 46

EP - 67

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 I

ER -