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, Daniel 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

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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 languageEnglish (US)
Article number21
JournalAstrophysical Journal
Volume814
Issue number1
DOIs
StatePublished - Nov 20 2015

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galaxies
wavelength
wavelengths
isophotes
substructures
probe
analysis
indication
x rays
velocity distribution
shear
radii
probes

Keywords

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

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 1015 Mo galaxy cluster at z = 0.7. / Sharon, K.; Gladders, M. D.; Marrone, Daniel 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.; Muchovej, S. J C; Schrabback, T.; Yee, H. K C.

In: Astrophysical Journal, Vol. 814, No. 1, 21, 20.11.2015.

Research output: Contribution to journalArticle

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 Mo galaxy cluster at z = 0.7', Astrophysical Journal, vol. 814, no. 1, 21. https://doi.org/10.1088/0004-637X/814/1/21
Sharon, K. ; Gladders, M. D. ; Marrone, Daniel 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. ; Muchovej, S. J C ; Schrabback, T. ; Yee, H. K C. / A multi-wavelength mass analysis of RCS2 J232727.6-020437, A ∼3 × 1015 Mo galaxy cluster at z = 0.7. In: Astrophysical Journal. 2015 ; Vol. 814, No. 1.
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