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High-precision strong lensing models of galaxy clusters in the JWST era

Published online by Cambridge University Press:  04 March 2024

P. Bergamini Open the ORCID record for P. Bergamini [Opens in a new window] ,
C. Grillo ,
P. Rosati ,
A. Acebron ,
E. Vanzella Open the ORCID record for E. Vanzella [Opens in a new window] ,
A. Mercurio ,
M. Meneghetti ,
G. Angora Open the ORCID record for G. Angora [Opens in a new window] ,
G. Granata  and
U. Mestric
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P. Bergamini*
Affiliation:
Dipartimento di Fisica, Università di Milano, via Celoria 16, I-20133 Milano, Italy. INAF – OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy
C. Grillo
Affiliation:
Dipartimento di Fisica, Università di Milano, via Celoria 16, I-20133 Milano, Italy. INAF – IASF Milano, via A. Corti 12, I-20133 Milano, Italy
P. Rosati
Affiliation:
INAF – OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Via Saragat 1, I-44122 Ferrara, Italy INFN, Sezione di Ferrara, Via Saragat 1, I-44122 Ferrara, Italy
A. Acebron
Affiliation:
Dipartimento di Fisica, Università di Milano, via Celoria 16, I-20133 Milano, Italy. INAF – IASF Milano, via A. Corti 12, I-20133 Milano, Italy
E. Vanzella
Affiliation:
INAF – OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy
A. Mercurio
Affiliation:
INAF – Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-80131 Napoli, Italy Dipartimento di Fisica, Università di Salerno, Via Giovanni Paolo II, 132, I-84084, Fisciano (SA), Italy
M. Meneghetti
Affiliation:
INAF – OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy
G. Angora
Affiliation:
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Via Saragat 1, I-44122 Ferrara, Italy INAF – Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-80131 Napoli, Italy
G. Granata
Affiliation:
Dipartimento di Fisica, Università di Milano, via Celoria 16, I-20133 Milano, Italy. INAF – IASF Milano, via A. Corti 12, I-20133 Milano, Italy
U. Mestric
Affiliation:
Dipartimento di Fisica, Università di Milano, via Celoria 16, I-20133 Milano, Italy. INAF – OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy
G. B. Caminha
Affiliation:
Technische Universität München, Physik-Department, James-Franck Str. 1, D-85741 Garching, Germany Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany 8 INAF – Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, I-34131 Trieste, Italy
T. Treu
Affiliation:
Department of Physics and Astronomy, University of California, Los Angeles, 430 Portola Plaza, Los Angeles, CA 90095, USA
*
email: pietro.bergamini@unimi.it
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Abstract

We present high-precision strong lensing models for the galaxy clusters MACS J0416.1–0403 at z=0.396 and Abell 2744 at z=0.307. The models are constrained by two of the largest data-sets of secure multiple images ever used in lensing. These are identified from the photometric images observed by the Hubble space telescope and JWST in combination with spectroscopic data obtained by the Multi-Unit Spectroscopic Explorer at the Very Large Telescope. The same spectro-photometric data are used to create pure and complete samples of cluster member galaxies. Our models allow an extremely precise estimation of the cluster total mass distribution and produce accurate magnification maps that are fundamental to study the physical properties (mass, size, luminosity, etc.) of the lensed high-redshift galaxies.

Keywords

Galaxy ClusterStrong Gravitational LensingDark Matter
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S381: Strong Gravitational Lensing in the Era of Big Data , December 2022 , pp. 71 - 78
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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