MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO

Alex Griffiths, Christopher J. Conselice, Mehmet Alpaslan, Brenda L. Frye, Jose M. Diego, Adi Zitrin, Haojing Yan, Zhiyuan Ma, Robert Barone-Nugent, Rachana Bhatawdekar, Simon P. Driver, Aaron S. G. Robotham, Rogier A. Windhorst, J. Start B. Wyithe

Research output: Contribution to journalArticle

Abstract

We present the results of a VLT MUSE/FORS2 and Spitzer survey of a unique compact lensing cluster CLIO at z = 0.42, discovered through the GAMA survey using spectroscopic redshifts. Compact and massive clusters such as this are understudied, but provide a unique prospective on dark matter distributions and for finding background lensed high-z galaxies. The CLIO cluster was identified for follow-up observations due to its almost unique combination of high-mass and dark matter halo concentration, as well as having observed lensing arcs from ground-based images. Using dual band optical and infra-red imaging from FORS2 and Spitzer, in combination with MUSE optical spectroscopy we identify 89 cluster members and find background sources out to z = 6.49. We describe the physical state of this cluster, finding a strong correlation between environment and galaxy spectral type. Under the assumption of an NFW profile, we measure the total mass of CLIO to be M-200 = (4.49 +/- 0.25) x 10(14) M-circle dot. We build and present an initial strong-lensing model for this cluster, and measure a relatively low intracluster light (ICL) fraction of 7.21 +/- 1.53 per cent through galaxy profile fitting. Due to its strong potential for lensing background galaxies and its low ICL, the CLIO cluster will be a target for our 110h James Webb Space Telescope 'Webb Medium-Deep Field' (WMDF) GTO program.

Original languageEnglish
Pages (from-to)2853-2869
Number of pages17
JournalMonthly Notices of the Royal Astronomical Society
Volume475
Issue number3
DOIs
Publication statusPublished - Apr 2018

Cite this

Griffiths, A., Conselice, C. J., Alpaslan, M., Frye, B. L., Diego, J. M., Zitrin, A., ... Wyithe, J. S. B. (2018). MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO. Monthly Notices of the Royal Astronomical Society, 475(3), 2853-2869. https://doi.org/10.1093/mnras/stx3364
Griffiths, Alex ; Conselice, Christopher J. ; Alpaslan, Mehmet ; Frye, Brenda L. ; Diego, Jose M. ; Zitrin, Adi ; Yan, Haojing ; Ma, Zhiyuan ; Barone-Nugent, Robert ; Bhatawdekar, Rachana ; Driver, Simon P. ; Robotham, Aaron S. G. ; Windhorst, Rogier A. ; Wyithe, J. Start B. / MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 475, No. 3. pp. 2853-2869.
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abstract = "We present the results of a VLT MUSE/FORS2 and Spitzer survey of a unique compact lensing cluster CLIO at z = 0.42, discovered through the GAMA survey using spectroscopic redshifts. Compact and massive clusters such as this are understudied, but provide a unique prospective on dark matter distributions and for finding background lensed high-z galaxies. The CLIO cluster was identified for follow-up observations due to its almost unique combination of high-mass and dark matter halo concentration, as well as having observed lensing arcs from ground-based images. Using dual band optical and infra-red imaging from FORS2 and Spitzer, in combination with MUSE optical spectroscopy we identify 89 cluster members and find background sources out to z = 6.49. We describe the physical state of this cluster, finding a strong correlation between environment and galaxy spectral type. Under the assumption of an NFW profile, we measure the total mass of CLIO to be M-200 = (4.49 +/- 0.25) x 10(14) M-circle dot. We build and present an initial strong-lensing model for this cluster, and measure a relatively low intracluster light (ICL) fraction of 7.21 +/- 1.53 per cent through galaxy profile fitting. Due to its strong potential for lensing background galaxies and its low ICL, the CLIO cluster will be a target for our 110h James Webb Space Telescope 'Webb Medium-Deep Field' (WMDF) GTO program.",
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Griffiths, A, Conselice, CJ, Alpaslan, M, Frye, BL, Diego, JM, Zitrin, A, Yan, H, Ma, Z, Barone-Nugent, R, Bhatawdekar, R, Driver, SP, Robotham, ASG, Windhorst, RA & Wyithe, JSB 2018, 'MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO' Monthly Notices of the Royal Astronomical Society, vol. 475, no. 3, pp. 2853-2869. https://doi.org/10.1093/mnras/stx3364

MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO. / Griffiths, Alex; Conselice, Christopher J.; Alpaslan, Mehmet; Frye, Brenda L.; Diego, Jose M.; Zitrin, Adi; Yan, Haojing; Ma, Zhiyuan; Barone-Nugent, Robert; Bhatawdekar, Rachana; Driver, Simon P.; Robotham, Aaron S. G.; Windhorst, Rogier A.; Wyithe, J. Start B.

In: Monthly Notices of the Royal Astronomical Society, Vol. 475, No. 3, 04.2018, p. 2853-2869.

Research output: Contribution to journalArticle

TY - JOUR

T1 - MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO

AU - Griffiths, Alex

AU - Conselice, Christopher J.

AU - Alpaslan, Mehmet

AU - Frye, Brenda L.

AU - Diego, Jose M.

AU - Zitrin, Adi

AU - Yan, Haojing

AU - Ma, Zhiyuan

AU - Barone-Nugent, Robert

AU - Bhatawdekar, Rachana

AU - Driver, Simon P.

AU - Robotham, Aaron S. G.

AU - Windhorst, Rogier A.

AU - Wyithe, J. Start B.

PY - 2018/4

Y1 - 2018/4

N2 - We present the results of a VLT MUSE/FORS2 and Spitzer survey of a unique compact lensing cluster CLIO at z = 0.42, discovered through the GAMA survey using spectroscopic redshifts. Compact and massive clusters such as this are understudied, but provide a unique prospective on dark matter distributions and for finding background lensed high-z galaxies. The CLIO cluster was identified for follow-up observations due to its almost unique combination of high-mass and dark matter halo concentration, as well as having observed lensing arcs from ground-based images. Using dual band optical and infra-red imaging from FORS2 and Spitzer, in combination with MUSE optical spectroscopy we identify 89 cluster members and find background sources out to z = 6.49. We describe the physical state of this cluster, finding a strong correlation between environment and galaxy spectral type. Under the assumption of an NFW profile, we measure the total mass of CLIO to be M-200 = (4.49 +/- 0.25) x 10(14) M-circle dot. We build and present an initial strong-lensing model for this cluster, and measure a relatively low intracluster light (ICL) fraction of 7.21 +/- 1.53 per cent through galaxy profile fitting. Due to its strong potential for lensing background galaxies and its low ICL, the CLIO cluster will be a target for our 110h James Webb Space Telescope 'Webb Medium-Deep Field' (WMDF) GTO program.

AB - We present the results of a VLT MUSE/FORS2 and Spitzer survey of a unique compact lensing cluster CLIO at z = 0.42, discovered through the GAMA survey using spectroscopic redshifts. Compact and massive clusters such as this are understudied, but provide a unique prospective on dark matter distributions and for finding background lensed high-z galaxies. The CLIO cluster was identified for follow-up observations due to its almost unique combination of high-mass and dark matter halo concentration, as well as having observed lensing arcs from ground-based images. Using dual band optical and infra-red imaging from FORS2 and Spitzer, in combination with MUSE optical spectroscopy we identify 89 cluster members and find background sources out to z = 6.49. We describe the physical state of this cluster, finding a strong correlation between environment and galaxy spectral type. Under the assumption of an NFW profile, we measure the total mass of CLIO to be M-200 = (4.49 +/- 0.25) x 10(14) M-circle dot. We build and present an initial strong-lensing model for this cluster, and measure a relatively low intracluster light (ICL) fraction of 7.21 +/- 1.53 per cent through galaxy profile fitting. Due to its strong potential for lensing background galaxies and its low ICL, the CLIO cluster will be a target for our 110h James Webb Space Telescope 'Webb Medium-Deep Field' (WMDF) GTO program.

KW - gravitational lensing: strong

KW - echniques: imaging spectroscopy

KW - galaxies: clusters: general

KW - STAR-FORMING GALAXIES

KW - MASS ASSEMBLY GAMA

KW - HUBBLE-FRONTIER-FIELDS

KW - RICH CLUSTERS

KW - INTRACLUSTER LIGHT

KW - FORMATION RATES

KW - LUMINOSITY FUNCTIONS

KW - MODELS

KW - DISTRIBUTIONS

KW - EVOLUTION

U2 - 10.1093/mnras/stx3364

DO - 10.1093/mnras/stx3364

M3 - Article

VL - 475

SP - 2853

EP - 2869

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -