A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 1015 Mo galaxy cluster at z = 0.7

K. Sharon; M. D. Gladders; D. P. Marrone; H. Hoekstra; E. Rasia; H. Bourdin; D. Gifford; A. K. Hicks; C. Greer; T. Mroczkowski; L. F. Barrientos; M. Bayliss; J. E. Carlstrom; D. G. Gilbank; M. Gralla; J. Hlavacek-Larrondo; E. Leitch; P. Mazzotta; C. Miller; S. J.C. Muchovej; T. Schrabback; H. K.C. Yee

doi:10.1088/0004-637X/814/1/21

A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 10¹⁵ M_o galaxy cluster at z = 0.7

K. Sharon, M. D. Gladders, D. P. Marrone, H. Hoekstra, E. Rasia, H. Bourdin, D. Gifford, A. K. Hicks, C. Greer, T. Mroczkowski, L. F. Barrientos, M. Bayliss, J. E. Carlstrom, D. G. Gilbank, M. Gralla, J. Hlavacek-Larrondo, E. Leitch, P. Mazzotta, C. Miller, S. J.C. MuchovejT. Schrabback, H. K.C. Yee

Astronomy

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19 Scopus citations

Abstract

We present an initial study of the mass and evolutionary state of a massive and distant cluster, RCS2 J232727.6-020437. This cluster, at z = 0.6986, is the richest cluster discovered in the RCS2 project. The mass measurements presented in this paper are derived from all possible mass proxies: X-ray measurements, weak-lensing shear, strong lensing, Sunyaev-Zel'dovich effect decrement, the velocity distribution of cluster member galaxies, and galaxy richness. While each of these observables probe the mass of the cluster at a different radius, they all indicate that RCS2 J232727.6-020437 is among the most massive clusters at this redshift, with an estimated mass of M₂₀₀∼3×10¹⁵h₇₀ ^-1M_⊙. In this paper, we demonstrate that the various observables are all reasonably consistent with each other to within their uncertainties. RCS2 J232727.6-020437 appears to be well relaxed - with circular and concentric X-ray isophotes, with a cool core, and no indication of significant substructure in extensive galaxy velocity data.

Original language	English (US)
Article number	21
Journal	Astrophysical Journal
Volume	814
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/814/1/21
State	Published - Nov 20 2015

Keywords

galaxies: clusters: individual (RCS2 J232727.6-020437)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/0004-637X/814/1/21

Cite this

Sharon, K., Gladders, M. D., Marrone, D. P., Hoekstra, H., Rasia, E., Bourdin, H., Gifford, D., Hicks, A. K., Greer, C., Mroczkowski, T., Barrientos, L. F., Bayliss, M., Carlstrom, J. E., Gilbank, D. G., Gralla, M., Hlavacek-Larrondo, J., Leitch, E., Mazzotta, P., Miller, C., ... Yee, H. K. C. (2015). A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 10¹⁵ M_o galaxy cluster at z = 0.7. Astrophysical Journal, 814(1), Article 21. https://doi.org/10.1088/0004-637X/814/1/21

Sharon, K, Gladders, MD, Marrone, DP, Hoekstra, H, Rasia, E, Bourdin, H, Gifford, D, Hicks, AK, Greer, C, Mroczkowski, T, Barrientos, LF, Bayliss, M, Carlstrom, JE, Gilbank, DG, Gralla, M, Hlavacek-Larrondo, J, Leitch, E, Mazzotta, P, Miller, C, Muchovej, SJC, Schrabback, T & Yee, HKC 2015, 'A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 10¹⁵ M_o galaxy cluster at z = 0.7', Astrophysical Journal, vol. 814, no. 1, 21. https://doi.org/10.1088/0004-637X/814/1/21

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title = "A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 1015 Mo galaxy cluster at z = 0.7",

abstract = "We present an initial study of the mass and evolutionary state of a massive and distant cluster, RCS2 J232727.6-020437. This cluster, at z = 0.6986, is the richest cluster discovered in the RCS2 project. The mass measurements presented in this paper are derived from all possible mass proxies: X-ray measurements, weak-lensing shear, strong lensing, Sunyaev-Zel'dovich effect decrement, the velocity distribution of cluster member galaxies, and galaxy richness. While each of these observables probe the mass of the cluster at a different radius, they all indicate that RCS2 J232727.6-020437 is among the most massive clusters at this redshift, with an estimated mass of M200∼3×1015h70 -1M⊙. In this paper, we demonstrate that the various observables are all reasonably consistent with each other to within their uncertainties. RCS2 J232727.6-020437 appears to be well relaxed - with circular and concentric X-ray isophotes, with a cool core, and no indication of significant substructure in extensive galaxy velocity data.",

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AU - Sharon, K.

AU - Gladders, M. D.

AU - Marrone, D. P.

AU - Hoekstra, H.

AU - Rasia, E.

AU - Bourdin, H.

AU - Gifford, D.

AU - Hicks, A. K.

AU - Greer, C.

AU - Mroczkowski, T.

AU - Barrientos, L. F.

AU - Bayliss, M.

AU - Carlstrom, J. E.

AU - Gilbank, D. G.

AU - Gralla, M.

AU - Hlavacek-Larrondo, J.

AU - Leitch, E.

AU - Mazzotta, P.

AU - Miller, C.

AU - Muchovej, S. J.C.

AU - Schrabback, T.

AU - Yee, H. K.C.

PY - 2015/11/20

Y1 - 2015/11/20

N2 - We present an initial study of the mass and evolutionary state of a massive and distant cluster, RCS2 J232727.6-020437. This cluster, at z = 0.6986, is the richest cluster discovered in the RCS2 project. The mass measurements presented in this paper are derived from all possible mass proxies: X-ray measurements, weak-lensing shear, strong lensing, Sunyaev-Zel'dovich effect decrement, the velocity distribution of cluster member galaxies, and galaxy richness. While each of these observables probe the mass of the cluster at a different radius, they all indicate that RCS2 J232727.6-020437 is among the most massive clusters at this redshift, with an estimated mass of M200∼3×1015h70 -1M⊙. In this paper, we demonstrate that the various observables are all reasonably consistent with each other to within their uncertainties. RCS2 J232727.6-020437 appears to be well relaxed - with circular and concentric X-ray isophotes, with a cool core, and no indication of significant substructure in extensive galaxy velocity data.

AB - We present an initial study of the mass and evolutionary state of a massive and distant cluster, RCS2 J232727.6-020437. This cluster, at z = 0.6986, is the richest cluster discovered in the RCS2 project. The mass measurements presented in this paper are derived from all possible mass proxies: X-ray measurements, weak-lensing shear, strong lensing, Sunyaev-Zel'dovich effect decrement, the velocity distribution of cluster member galaxies, and galaxy richness. While each of these observables probe the mass of the cluster at a different radius, they all indicate that RCS2 J232727.6-020437 is among the most massive clusters at this redshift, with an estimated mass of M200∼3×1015h70 -1M⊙. In this paper, we demonstrate that the various observables are all reasonably consistent with each other to within their uncertainties. RCS2 J232727.6-020437 appears to be well relaxed - with circular and concentric X-ray isophotes, with a cool core, and no indication of significant substructure in extensive galaxy velocity data.

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