SPT-CL J2040-4451: An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation

M. B. Bayliss; M. L N Ashby; J. Ruel; M. Brodwin; K. A. Aird; M. W. Bautz; B. A. Benson; L. E. Bleem; S. Bocquet; J. E. Carlstrom; C. L. Chang; H. M. Cho; A. Clocchiatti; T. M. Crawford; A. T. Crites; S. Desai; M. A. Dobbs; J. P. Dudley; R. J. Foley; W. R. Forman; E. M. George; D. Gettings; M. D. Gladders; A. H. Gonzalez; T. De Haan; N. W. Halverson; F. W. High; G. P. Holder; W. L. Holzapfel; S. Hoover; J. D. Hrubes; C. Jones; M. Joy; R. Keisler; L. Knox; A. T. Lee; E. M. Leitch; J. Liu; M. Lueker; D. Luong-Van; A. Mantz; D. P. Marrone; K. Mawatari; M. McDonald; J. J. McMahon; J. Mehl; S. S. Meyer; E. D. Miller; L. Mocanu; J. J. Mohr; T. E. Montroy; S. S. Murray; S. Padin; T. Plagge; C. Pryke; C. L. Reichardt; A. Rest; J. E. Ruhl; B. R. Saliwanchik; A. Saro; J. T. Sayre; K. K. Schaffer; E. Shirokoff; J. Song; B. Stalder; R. Šuhada; H. G. Spieler; S. A. Stanford; Z. Staniszewski; A. A. Stark; K. Story; C. W. Stubbs; A. Van Engelen; K. Vanderlinde; J. D. Vieira; A. Vikhlinin; R. Williamson; O. Zahn; A. Zenteno

doi:10.1088/0004-637X/794/1/12

SPT-CL J2040-4451: An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation

M. B. Bayliss, M. L N Ashby, J. Ruel, M. Brodwin, K. A. Aird, M. W. Bautz, B. A. Benson, L. E. Bleem, S. Bocquet, J. E. Carlstrom, C. L. Chang, H. M. Cho, A. Clocchiatti, T. M. Crawford, A. T. Crites, S. Desai, M. A. Dobbs, J. P. Dudley, R. J. Foley, W. R. FormanE. M. George, D. Gettings, M. D. Gladders, A. H. Gonzalez, T. De Haan, N. W. Halverson, F. W. High, G. P. Holder, W. L. Holzapfel, S. Hoover, J. D. Hrubes, C. Jones, M. Joy, R. Keisler, L. Knox, A. T. Lee, E. M. Leitch, J. Liu, M. Lueker, D. Luong-Van, A. Mantz, D. P. Marrone, K. Mawatari, M. McDonald, J. J. McMahon, J. Mehl, S. S. Meyer, E. D. Miller, L. Mocanu, J. J. Mohr, T. E. Montroy, S. S. Murray, S. Padin, T. Plagge, C. Pryke, C. L. Reichardt, A. Rest, J. E. Ruhl, B. R. Saliwanchik, A. Saro, J. T. Sayre, K. K. Schaffer, E. Shirokoff, J. Song, B. Stalder, R. Šuhada, H. G. Spieler, S. A. Stanford, Z. Staniszewski, A. A. Stark, K. Story, C. W. Stubbs, A. Van Engelen, K. Vanderlinde, J. D. Vieira, A. Vikhlinin, R. Williamson, O. Zahn, A. Zenteno

Physics and Astronomy (Twin Cities)

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Abstract

SPT-CL J2040-4451 - spectroscopically confirmed at z = 1.478 - is the highest-redshift galaxy cluster yet discovered via the Sunyaev-Zel'dovich effect. SPT-CL J2040-4451 was a candidate galaxy cluster identified in the first 720 deg²of the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey, and has been confirmed in follow-up imaging and spectroscopy. From multi-object spectroscopy with Magellan-I/Baade+IMACS we measure spectroscopic redshifts for 15 cluster member galaxies, all of which have strong [O II] λλ3727 emission. SPT-CL J2040-4451 has an SZ-measured mass of M₅₀₀, SZ = 3.2 ± 0.8 × 10¹⁴M_h, corresponding to M₂₀₀, SZ = 5.8 ± 1.4 × 10¹⁴M_h. The velocity dispersion measured entirely from blue star-forming members is σ_v= 1500 ± 520 km s^-1. The prevalence of star-forming cluster members (galaxies with >1.5 M yr^-1) implies that this massive, high-redshift cluster is experiencing a phase of active star formation, and supports recent results showing a marked increase in star formation occurring in galaxy clusters at z ≳ 1.4. We also compute the probability of finding a cluster as rare as this in the SPT-SZ survey to be >99%, indicating that its discovery is not in tension with the concordance ΛCDM cosmological model.

Original language	English (US)
Article number	12
Journal	Astrophysical Journal
Volume	794
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/794/1/12
State	Published - Oct 10 2014

Bibliographical note

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© 2014 The American Astronomical Society. All rights reserved.

Keywords

galaxies: clusters: individual (SPT-CL J2040-4451)
galaxies: distances and redshifts
galaxies: evolution
large-scale structure of universe

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Bayliss, M. B., Ashby, M. L. N., Ruel, J., Brodwin, M., Aird, K. A., Bautz, M. W., Benson, B. A., Bleem, L. E., Bocquet, S., Carlstrom, J. E., Chang, C. L., Cho, H. M., Clocchiatti, A., Crawford, T. M., Crites, A. T., Desai, S., Dobbs, M. A., Dudley, J. P., Foley, R. J., ... Zenteno, A. (2014). SPT-CL J2040-4451: An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation. Astrophysical Journal, 794(1), Article 12. https://doi.org/10.1088/0004-637X/794/1/12

Bayliss, MB, Ashby, MLN, Ruel, J, Brodwin, M, Aird, KA, Bautz, MW, Benson, BA, Bleem, LE, Bocquet, S, Carlstrom, JE, Chang, CL, Cho, HM, Clocchiatti, A, Crawford, TM, Crites, AT, Desai, S, Dobbs, MA, Dudley, JP, Foley, RJ, Forman, WR, George, EM, Gettings, D, Gladders, MD, Gonzalez, AH, De Haan, T, Halverson, NW, High, FW, Holder, GP, Holzapfel, WL, Hoover, S, Hrubes, JD, Jones, C, Joy, M, Keisler, R, Knox, L, Lee, AT, Leitch, EM, Liu, J, Lueker, M, Luong-Van, D, Mantz, A, Marrone, DP, Mawatari, K, McDonald, M, McMahon, JJ, Mehl, J, Meyer, SS, Miller, ED, Mocanu, L, Mohr, JJ, Montroy, TE, Murray, SS, Padin, S, Plagge, T, Pryke, C, Reichardt, CL, Rest, A, Ruhl, JE, Saliwanchik, BR, Saro, A, Sayre, JT, Schaffer, KK, Shirokoff, E, Song, J, Stalder, B, Šuhada, R, Spieler, HG, Stanford, SA, Staniszewski, Z, Stark, AA, Story, K, Stubbs, CW, Van Engelen, A, Vanderlinde, K, Vieira, JD, Vikhlinin, A, Williamson, R, Zahn, O & Zenteno, A 2014, 'SPT-CL J2040-4451: An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation', Astrophysical Journal, vol. 794, no. 1, 12. https://doi.org/10.1088/0004-637X/794/1/12

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title = "SPT-CL J2040-4451: An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation",

abstract = "SPT-CL J2040-4451 - spectroscopically confirmed at z = 1.478 - is the highest-redshift galaxy cluster yet discovered via the Sunyaev-Zel'dovich effect. SPT-CL J2040-4451 was a candidate galaxy cluster identified in the first 720 deg2of the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey, and has been confirmed in follow-up imaging and spectroscopy. From multi-object spectroscopy with Magellan-I/Baade+IMACS we measure spectroscopic redshifts for 15 cluster member galaxies, all of which have strong [O II] λλ3727 emission. SPT-CL J2040-4451 has an SZ-measured mass of M500, SZ = 3.2 ± 0.8 × 1014Mh, corresponding to M200, SZ = 5.8 ± 1.4 × 1014Mh. The velocity dispersion measured entirely from blue star-forming members is σv= 1500 ± 520 km s-1. The prevalence of star-forming cluster members (galaxies with >1.5 M yr-1) implies that this massive, high-redshift cluster is experiencing a phase of active star formation, and supports recent results showing a marked increase in star formation occurring in galaxy clusters at z ≳ 1.4. We also compute the probability of finding a cluster as rare as this in the SPT-SZ survey to be >99%, indicating that its discovery is not in tension with the concordance ΛCDM cosmological model.",

keywords = "galaxies: clusters: individual (SPT-CL J2040-4451), galaxies: distances and redshifts, galaxies: evolution, large-scale structure of universe",

author = "Bayliss, {M. B.} and Ashby, {M. L N} and J. Ruel and M. Brodwin and Aird, {K. A.} and Bautz, {M. W.} and Benson, {B. A.} and Bleem, {L. E.} and S. Bocquet and Carlstrom, {J. E.} and Chang, {C. L.} and Cho, {H. M.} and A. Clocchiatti and Crawford, {T. M.} and Crites, {A. T.} and S. Desai and Dobbs, {M. A.} and Dudley, {J. P.} and Foley, {R. J.} and Forman, {W. R.} and George, {E. M.} and D. Gettings and Gladders, {M. D.} and Gonzalez, {A. H.} and {De Haan}, T. and Halverson, {N. W.} and High, {F. W.} and Holder, {G. P.} and Holzapfel, {W. L.} and S. Hoover and Hrubes, {J. D.} and C. Jones and M. Joy and R. Keisler and L. Knox and Lee, {A. T.} and Leitch, {E. M.} and J. Liu and M. Lueker and D. Luong-Van and A. Mantz and Marrone, {D. P.} and K. Mawatari and M. McDonald and McMahon, {J. J.} and J. Mehl and Meyer, {S. S.} and Miller, {E. D.} and L. Mocanu and Mohr, {J. J.} and Montroy, {T. E.} and Murray, {S. S.} and S. Padin and T. Plagge and C. Pryke and Reichardt, {C. L.} and A. Rest and Ruhl, {J. E.} and Saliwanchik, {B. R.} and A. Saro and Sayre, {J. T.} and Schaffer, {K. K.} and E. Shirokoff and J. Song and B. Stalder and R. {\v S}uhada and Spieler, {H. G.} and Stanford, {S. A.} and Z. Staniszewski and Stark, {A. A.} and K. Story and Stubbs, {C. W.} and {Van Engelen}, A. and K. Vanderlinde and Vieira, {J. D.} and A. Vikhlinin and R. Williamson and O. Zahn and A. Zenteno",

year = "2014",

month = oct,

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doi = "10.1088/0004-637X/794/1/12",

language = "English (US)",

volume = "794",

journal = "Astrophysical Journal",

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TY - JOUR

T1 - SPT-CL J2040-4451

T2 - An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation

AU - Bayliss, M. B.

AU - Ashby, M. L N

AU - Ruel, J.

AU - Brodwin, M.

AU - Aird, K. A.

AU - Bautz, M. W.

AU - Benson, B. A.

AU - Bleem, L. E.

AU - Bocquet, S.

AU - Carlstrom, J. E.

AU - Chang, C. L.

AU - Cho, H. M.

AU - Clocchiatti, A.

AU - Crawford, T. M.

AU - Crites, A. T.

AU - Desai, S.

AU - Dobbs, M. A.

AU - Dudley, J. P.

AU - Foley, R. J.

AU - Forman, W. R.

AU - George, E. M.

AU - Gettings, D.

AU - Gladders, M. D.

AU - Gonzalez, A. H.

AU - De Haan, T.

AU - Halverson, N. W.

AU - High, F. W.

AU - Holder, G. P.

AU - Holzapfel, W. L.

AU - Hoover, S.

AU - Hrubes, J. D.

AU - Jones, C.

AU - Joy, M.

AU - Keisler, R.

AU - Knox, L.

AU - Lee, A. T.

AU - Leitch, E. M.

AU - Liu, J.

AU - Lueker, M.

AU - Luong-Van, D.

AU - Mantz, A.

AU - Marrone, D. P.

AU - Mawatari, K.

AU - McDonald, M.

AU - McMahon, J. J.

AU - Mehl, J.

AU - Meyer, S. S.

AU - Miller, E. D.

AU - Mocanu, L.

AU - Mohr, J. J.

AU - Montroy, T. E.

AU - Murray, S. S.

AU - Padin, S.

AU - Plagge, T.

AU - Pryke, C.

AU - Reichardt, C. L.

AU - Rest, A.

AU - Ruhl, J. E.

AU - Saliwanchik, B. R.

AU - Saro, A.

AU - Sayre, J. T.

AU - Schaffer, K. K.

AU - Shirokoff, E.

AU - Song, J.

AU - Stalder, B.

AU - Šuhada, R.

AU - Spieler, H. G.

AU - Stanford, S. A.

AU - Staniszewski, Z.

AU - Stark, A. A.

AU - Story, K.

AU - Stubbs, C. W.

AU - Van Engelen, A.

AU - Vanderlinde, K.

AU - Vieira, J. D.

AU - Vikhlinin, A.

AU - Williamson, R.

AU - Zahn, O.

AU - Zenteno, A.

PY - 2014/10/10

Y1 - 2014/10/10

N2 - SPT-CL J2040-4451 - spectroscopically confirmed at z = 1.478 - is the highest-redshift galaxy cluster yet discovered via the Sunyaev-Zel'dovich effect. SPT-CL J2040-4451 was a candidate galaxy cluster identified in the first 720 deg2of the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey, and has been confirmed in follow-up imaging and spectroscopy. From multi-object spectroscopy with Magellan-I/Baade+IMACS we measure spectroscopic redshifts for 15 cluster member galaxies, all of which have strong [O II] λλ3727 emission. SPT-CL J2040-4451 has an SZ-measured mass of M500, SZ = 3.2 ± 0.8 × 1014Mh, corresponding to M200, SZ = 5.8 ± 1.4 × 1014Mh. The velocity dispersion measured entirely from blue star-forming members is σv= 1500 ± 520 km s-1. The prevalence of star-forming cluster members (galaxies with >1.5 M yr-1) implies that this massive, high-redshift cluster is experiencing a phase of active star formation, and supports recent results showing a marked increase in star formation occurring in galaxy clusters at z ≳ 1.4. We also compute the probability of finding a cluster as rare as this in the SPT-SZ survey to be >99%, indicating that its discovery is not in tension with the concordance ΛCDM cosmological model.

AB - SPT-CL J2040-4451 - spectroscopically confirmed at z = 1.478 - is the highest-redshift galaxy cluster yet discovered via the Sunyaev-Zel'dovich effect. SPT-CL J2040-4451 was a candidate galaxy cluster identified in the first 720 deg2of the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey, and has been confirmed in follow-up imaging and spectroscopy. From multi-object spectroscopy with Magellan-I/Baade+IMACS we measure spectroscopic redshifts for 15 cluster member galaxies, all of which have strong [O II] λλ3727 emission. SPT-CL J2040-4451 has an SZ-measured mass of M500, SZ = 3.2 ± 0.8 × 1014Mh, corresponding to M200, SZ = 5.8 ± 1.4 × 1014Mh. The velocity dispersion measured entirely from blue star-forming members is σv= 1500 ± 520 km s-1. The prevalence of star-forming cluster members (galaxies with >1.5 M yr-1) implies that this massive, high-redshift cluster is experiencing a phase of active star formation, and supports recent results showing a marked increase in star formation occurring in galaxy clusters at z ≳ 1.4. We also compute the probability of finding a cluster as rare as this in the SPT-SZ survey to be >99%, indicating that its discovery is not in tension with the concordance ΛCDM cosmological model.

KW - galaxies: clusters: individual (SPT-CL J2040-4451)

KW - galaxies: distances and redshifts

KW - galaxies: evolution

KW - large-scale structure of universe

UR - http://www.scopus.com/inward/record.url?scp=84907459481&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907459481&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/794/1/12

DO - 10.1088/0004-637X/794/1/12

M3 - Article

AN - SCOPUS:84907459481

SN - 0004-637X

VL - 794

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 12

ER -

SPT-CL J2040-4451: An SZ-selected galaxy cluster at z = 1.478 with significant ongoing star formation

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Keywords

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