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VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model

Acebron, Ana and Grillo, Claudio and Bergamini, Pietro and Mercurio, Amata and Rosati, Piero and Bartosch Caminha, Gabriel and Tozzi, Paolo and Brammer, Gabriel B. and Meneghetti, Massimo and Morelli, Andrea and Nonino, Mario and Vanzella, Eros (2022) VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model. Astrophysical Journal, 926 (1). Art. No. 86. ISSN 0004-637X. doi:10.3847/1538-4357/ac3d35. https://resolver.caltech.edu/CaltechAUTHORS:20220216-883891263

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Abstract

We present a strong lensing analysis of the galaxy cluster SDSS J1029+2623 at z = 0.588, one of the few currently known lens clusters with multiple images of a background (z = 2.1992) quasar with a measured time delay. We use archival Hubble Space Telescope multiband imaging and new Multi Unit Spectroscopic Explorer follow-up spectroscopy to build an accurate lens mass model, a crucial step toward future cosmological applications. The spectroscopic data enable the secure identification of 57 cluster members and of two nearby perturbers along the line of sight. We estimate the inner kinematics of a subset of 20 cluster galaxies to calibrate the scaling relations parameterizing the sub-halo mass component. We also reliably determine the redshift of four multiply imaged sources, provide a tentative measurement for one system, and report the discovery of a new four-image system. The final catalog comprises 26 multiple images from seven background sources, spanning a wide redshift range, from 1.02 to 5.06. We present two parametric lens models, with slightly different cluster mass parameterizations. The observed positions of the multiple images are accurately reproduced within approximately 0.″2, the three image positions of the quasar within only ∼0.″1. We estimate a cluster projected total mass of M(<300 kpc) ~2.1 x 10¹⁴ M_⊙, with a statistical uncertainty of a few percent. Both models, which include a small galaxy close to one of the quasar images, predict magnitude differences and time delays between the quasar images that are consistent with the observations.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4357/ac3d35DOIArticle
https://arxiv.org/abs/2111.05871arXivDiscussion Paper
ORCID:
AuthorORCID
Acebron, Ana0000-0003-3108-9039
Grillo, Claudio0000-0002-5926-7143
Bergamini, Pietro0000-0003-1383-9414
Mercurio, Amata0000-0001-9261-7849
Rosati, Piero0000-0002-6813-0632
Bartosch Caminha, Gabriel0000-0001-6052-3274
Tozzi, Paolo0000-0003-3096-9966
Brammer, Gabriel B.0000-0003-2680-005X
Meneghetti, Massimo0000-0003-1225-7084
Nonino, Mario0000-0001-6342-9662
Vanzella, Eros0000-0002-5057-135X
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 August 19; revised 2021 November 10; accepted 2021 November 23; published 2022 February 15. We kindly thank the referee for the insightful and useful comments received. We acknowledge financial support through grant PRIN-MIUR 2017WSCC32: "Zooming into dark matter and proto-galaxies with massive lensing clusters". A.A warmly thanks S. H. Suyu for her useful and constructive comments. G.B.C. thanks the Max Planck Society for support through the Max Planck Research Group for S. H. Suyu and the academic support from the German Centre for Cosmological Lensing. Facilities: HST(ACS - , WFC3) - , VLT(MUSE). -
Funders:
Funding AgencyGrant Number
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)2017WSCC32
Max Planck SocietyUNSPECIFIED
German Centre for Cosmological LensingUNSPECIFIED
Subject Keywords:Galaxy clusters; Strong gravitational lensing; Dark matter; Quasars
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Galaxy clusters (584); Strong gravitational lensing (1643); Dark matter (353); Quasars (1319)
DOI:10.3847/1538-4357/ac3d35
Record Number:CaltechAUTHORS:20220216-883891263
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20220216-883891263
Official Citation:Ana Acebron et al 2022 ApJ 926 86
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113464
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:16 Feb 2022 10:04
Last Modified:16 Feb 2022 20:33

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  • VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model. (deposited 16 Feb 2022 10:04) [Currently Displayed]

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  • Acebron, Ana and Grillo, Claudio and Bergamini, Pietro and Mercurio, Amata and Rosati, Piero and Bartosch Caminha, Gabriel and Tozzi, Paolo and Brammer, Gabriel B. and Meneghetti, Massimo and Morelli, Andrea and Nonino, Mario and Vanzella, Eros VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model. (deposited 16 Feb 2022 10:04) [Currently Displayed]

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