High angular resolution Sunyaev-Zel'dovich observations of MACS J1423.8+2404 with NIKA: Multiwavelength analysis

被引：26

作者：

Adam, R. ^{[1
,2
]}

Comis, B. ^{[1
]}

Bartalucci, I. ^{[3
]}

Adane, A. ^{[4
]}

Ade, P. ^{[5
]}

Andre, P. ^{[3
]}

Arnaud, M. ^{[3
]}

Beelen, A. ^{[6
,7
]}

Belier, B. ^{[8
]}

Benoit, A. ^{[9
,10
]}

Bideaud, A. ^{[5
]}

Billot, N. ^{[11
]}

Bourrion, O. ^{[1
]}

Calvo, M. ^{[9
,10
]}

Catalano, A. ^{[1
]}

Coiffard, G. ^{[4
]}

D'Addabbo, A. ^{[9
,10
,12
]}

Desert, F. -X. ^{[10
,13
]}

Doyle, S. ^{[5
]}

Goupy, J. ^{[9
,10
]}

Hasnoun, B. ^{[6
,7
]}

Hermelo, I. ^{[11
]}

Kramer, C. ^{[11
]}

Lagache, G. ^{[14
]}

Leclercq, S. ^{[4
]}

Macias-Perez, J. -F. ^{[1
]}

Martino, J. ^{[6
,7
]}

Mauskopf, P. ^{[5
,15
,16
]}

Mayet, F. ^{[1
]}

Monfardini, A. ^{[9
,10
]}

Pajot, F. ^{[6
,7
]}

Pascale, E. ^{[5
]}

Perotto, L. ^{[1
]}

Pointecouteau, E. ^{[17
,18
]}

Ponthieu, N. ^{[10
,13
]}

Pratt, G. W. ^{[3
]}

Reveret, V. ^{[3
]}

Ritacco, A. ^{[1
]}

Rodriguez, L. ^{[3
]}

Savini, G. ^{[19
]}

Schuster, K. ^{[4
]}

Sievers, A. ^{[11
]}

Triqueneaux, S. ^{[9
,10
]}

Tucker, C. ^{[5
]}

Zylka, R. ^{[4
]}

机构：

[1] Univ Grenoble Alpes, CNRS, Lab Phys Subatom & Cosmol, 53 Rue Martyrs, F-38000 Grenoble, France

[2] Univ Cote dAzur, CNRS, Lab Lagrange, Observ Cote dAzur, Blvd Observ,CS 34229, F-06304 Nice 4, France

[3] Univ Paris Diderot, Lab AIM, CEA, IRFU,CNRS,INSU,CEA Saclay, F-91191 Gif Sur Yvette, France

[4] Inst RadioAstron Millimetr IRAM, F-38400 St Martin Dheres, France

[5] Cardiff Univ, Astron Instrumentat Grp, Cardiff CF103XQ, S Glam, Wales

[6] CNRS, IAS, F-91440 Bures Sur Yvette, France

[7] Univ Paris 11, F-91440 Bures Sur Yvette, France

[8] Univ Paris 11, IEF, Bat 425, F-91400 Orsay, France

[9] CNRS, Inst Neel, F-75700 Paris, France

[10] Univ Grenoble, Grenoble, France

[11] Inst RadioAstron Millimetr IRAM, Granada 18012, Spain

[12] Univ Roma La Sapienza, Dipartimento Fis, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[13] CNRS, IPAG, F-75700 Paris, France

[14] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France

[15] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

[16] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[17] Univ Toulouse, UPS OMP, IRAP, F-31062 Toulouse, France

[18] CNRS, IRAP, 9 Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France

[19] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

来源：

ASTRONOMY & ASTROPHYSICS | 2016年 / 586卷

基金：

欧洲研究理事会;

关键词：

techniques: high angular resolution; galaxies: clusters: individual: MACS J1423.8+2404; galaxies: clusters: intracluster medium; RELAXED GALAXY CLUSTERS; X-RAY; REPRESENTATIVE SAMPLE; SCALING RELATIONS; XMM-NEWTON; TEMPERATURE PROFILES; SURFACE-BRIGHTNESS; CROSS-CALIBRATION; LENSING ANALYSIS; CHANDRA;

D O I：

10.1051/0004-6361/201527616

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The prototype of the NIKA2 camera, NIKA, is a dual-band instrument operating at the IRAM 30-m telescope, which can observe the sky simultaneously at 150 and 260 GHz. One of the main goals of NIKA (and NIKA2) is to measure the pressure distribution in galaxy clusters at high angular resolution using the thermal Sunyaev-Zel'dovich (tSZ) effect. Such observations have already proved to be an excellent probe of cluster pressure distributions even at intermediate and high redshifts. However, an important fraction of clusters host sub-millimeter and/or radio point sources, which can significantly affect the reconstructed signal. Here we report on <20 arcsec angular resolution observations at 150 and 260 GHz of the cluster MACS J1423.8+2404, which hosts both radio and submillimeter point sources. We examine the morphological distribution of the tSZ signal and compare it to other datasets. The NIKA data are combined with Herschel satellite data to study the spectral energy distribution (SED) of the sub-millimeter point source contaminants. We then perform a joint reconstruction of the intracluster medium (ICM) electronic pressure and density by combining NIKA, Planck, XMM-Newton, and Chandra data, focusing on the impact of the radio and sub-millimeter sources on the reconstructed pressure profile. We find that large-scale pressure distribution is unaffected by the point sources because of the resolved nature of the NIKA observations. The reconstructed pressure in the inner region is slightly higher when the contribution of point sources are removed. We show that it is not possible to set strong constraints on the central pressure distribution without accurately removing these contaminants. The comparison with X-ray only data shows good agreement for the pressure, temperature, and entropy profiles, which all indicate that MACS J1423.8+2404 is a dynamically relaxed cool core system. The present observations illustrate the possibility of measuring these quantities with a relatively small integration time, even at high redshift and without X-ray spectroscopy. This work is part of a pilot study aiming at optimizing tSZ observations with the future NIKA2 camera.

引用

页数：16

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