The XXL Survey. XLIV. Sunyaev-Zel'dovich mapping of a low-mass cluster at z ∼ 1: a multi-wavelength approach

Autor(en)

, M. Ricci, R. Adam, D. Eckert, P. Ade, P. André, A. Andrianasolo, B. Altieri, H. Aussel, A. Beelen, C. Benoist, A. Benoît, S. Berta, A. Bideaud, M. Birkinshaw, O. Bourrion, D. Boutigny, M. Bremer, M. Calvo, A. Cappi, L. Chiappetti, A. Catalano, M. De Petris, F.-X. Désert, S. Doyle, E. F. C. Driessen, L. Faccioli, C. Ferrari, S. Fotopoulou, F. Gastaldello, P. Giles, A. Gomez, J. Goupy, O. Hahn, C. Horellou, F. Kéruzoré, E. Koulouridis, C. Kramer, B. Ladjelate, G. Lagache, S. Leclercq, J.-F. Lestrade, J. F. Macías-Pérez, B. Maughan, S. Maurogordato, P. Mauskopf, A. Monfardini, F. Pacaud, L. Perotto, E. Pompei, K. Schuster

Abstrakt

High-mass clusters at low redshifts have been intensively studied at various wavelengths. However, while more distant objects at lower masses constitute the bulk population of future surveys, their physical state remain poorly explored to date. In this paper, we present resolved observations of the Sunyaev-Zel'dovich (SZ) effect, obtained with the NIKA2 camera, towards the cluster of galaxies XLSSC 102, a relatively low-mass system (M500 ∼ 2 × 1014 M⊙) at z = 0.97 detected from the XXL survey. We combine NIKA2 SZ data, XMM-Newton X-ray data, and Megacam optical data to explore, respectively, the spatial distribution of the gas electron pressure, the gas density, and the galaxies themselves. We find significant offsets between the X-ray peak, the SZ peak, the brightest cluster galaxy, and the peak of galaxy density. Additionally, the galaxy distribution and the gas present elongated morphologies. This is interpreted as the sign of a recent major merging event, which induced a local boost of the gas pressure towards the north of XLSSC 102 and stripped the gas out of the galaxy group. The NIKA2 data are also combined with XXL data to construct the thermodynamic profiles of XLSSC 102, obtaining relatively tight constraints up to about ∼r500, and revealing properties that are typical of disturbed systems. We also explore the impact of the cluster centre definition and the implication of local pressure substructure on the recovered profiles. Finally, we derive the global properties of XLSSC 102 and compare them to those of high-mass-and-low-redshift systems, finding no strong evidence for non-standard evolution. We also use scaling relations to obtain alternative mass estimates from our profiles. The variation between these different mass estimates reflects the difficulty to accurately measure the mass of low-mass clusters at z ∼ 1, especially with low signal-to-noise ratio data and for a disturbed system. However, it also highlights the strength of resolved SZ observations alone and in combination with survey-like X-ray data. This is promising for the study of high redshift clusters from the combination of eROSITA and high resolution SZ instruments and will complement the new generation of optical surveys from facilities such as LSST and Euclid. Based on observations carried out under project number 179-17 and 094-18, with the NIKA2 camera at the IRAM 30 m Telescope. IRAM is supported by INSU/CNRS (France), MPG (Germany) and IGN (Spain). Based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA.

Organisation(en)

Institut für Publizistik- und Kommunikationswissenschaft, Institut für Geschichte, Institut für Astrophysik, Institut für Mathematik, Studienservice und Lehrwesen, Center for Teaching and Learning, Institut für Theater-, Film- und Medienwissenschaft

Externe Organisation(en)

Laboratoire d'Annecy de Physique des Particules, Université Savoie Mont Blanc, CNRS/IN2P3, 74941, Annecy, France marina.ricci@lapp.in2p3.fr, Laboratoire Lagrange, Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Blvd de l'Observatoire, CS 34229, 06304, Nice Cedex 4, France 0000-0002-3645-9652, LLR, CNRS, École Polytechnique, Institut Polytechnique de Paris, Palaiseau, France, Universität Genf, Cardiff University, Université Paris VII - Paris-Diderot, Université Grenoble-Alpes, European Space Astronomy Centre (ESA/ESAC), Operations Department, Villanueva de la Canãda, Madrid, Spain, Université Paris XI - Paris-Sud, Université Côte d'Azur, Institut Néel, CNRS and Université Grenoble Alpes, Grenoble, France, Institut de RadioAstronomie Millimétrique (IRAM), University of Bristol, Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble Alpes, CNRS/IN2P3, 53 avenue des Martyrs, Grenoble, France, INAF-Osservatorio Astronomico di Bologna, INAF - IASF Milan, via A. Corti 12, 20133, Milano, Italy, Università degli Studi di Roma La Sapienza, Durham University, Spanish National Research Council (CSIC), Chalmers University of Technology, Institute for Astronomy & Astrophysics, Space Applications & Remote Sensing, National Observatory of Athens, 15236, Palaia Penteli, Greece, Institut de RadioAstronomie Millimétrique (IRAM), Granada, Spain, Aix-Marseille Université, Université de recherche Paris Sciences et Lettres, Arizona State University, Rheinische Friedrich-Wilhelms-Universität Bonn, European Southern Observatory (Chile)

Journal

Astronomy & Astrophysics

Band

642

ISSN

0004-6361

DOI

https://doi.org/10.1051/0004-6361/201937249

Publikationsdatum

10-2020

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie, 103004 Astrophysik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8653b737-3be0-49d5-a1e3-bc08f3bbfcd9