A complex node of the cosmic web associated with the massive galaxy cluster MACS J0600.1-2008

ABSTRACT MACS J0600.1-2008 (MACS0600) is an X-ray-luminous, massive galaxy cluster at $z_{\mathrm{d}}=0.43$, studied previously by the REionization LensIng Cluster Survey and ALMA Lensing Cluster Survey projects which revealed a complex, bimodal mass distribution and an intriguing high-redshift object behind it. Here, we report on the results of a combined analysis of the extended strong lensing (SL), X-ray, Sunyaev–Zeldovich (SZ), and galaxy luminosity-density properties of this system. Using new JWST and ground-based Gemini-N and Keck data, we obtain 13 new spectroscopic redshifts of multiply-imaged galaxies and identify 12 new photometric multiple-image systems and candidates, including two multiply-imaged $z\sim 7$ objects. Taking advantage of the larger areal coverage, our analysis reveals an additional bimodal, massive SL structure which we measure spectroscopically to lie adjacent to the cluster and whose existence was implied by previous SL-modelling analyses. While based in part on photometric systems identified in ground-based imaging requiring further verification, our extended SL model suggests that the cluster may have the second-largest critical area and effective Einstein radius observed to date, $A_{\mathrm{crit}}\simeq 2.16\, \mathrm{arcmin}^2$ and $\theta _{\mathrm{E}}=49.7^{\prime \prime }\pm 5.0^{\prime \prime }$ for a source at $z_{\mathrm{s}}=2$, enclosing a total mass of $M(\lt \theta _{\mathrm{E}})=(4.7\pm 0.7)\times 10^{14}\, \mathrm{M}_{\odot }$. These results are also supported by the galaxy luminosity distribution, and the SZ and X-ray data. Yet another, probably related massive cluster structure, discovered in X-rays 5 arcmin (1.7 Mpc) further north, suggests that MACS0600 is part of an even larger filamentary structure. This discovery adds to several recent detections of massive structures around SL galaxy clusters and establishes MACS0600 as a prime target for future high-redshift surveys with JWST.

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Journal
Monthly Notices of the Royal Astronomical Society
Published
2024-08-12
DOI
https://doi.org/10.1093/mnras/stae1943
Citations
6
Primary Topic
Galaxies: Formation, Evolution, Phenomena
Type
article
Field-Weighted Citation Impact
1.99

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article

A complex node of the cosmic web associated with the massive galaxy cluster MACS J0600.1-2008

Seiji Fujimoto, Guillaume Mahler, Lukas J. Furtak, Anna Niemiec et al.
6 citations
Monthly Notices of the Royal Astronomical Society
Galaxies: Formation, Evolution, Phenomena
1.99
article

A complex node of the cosmic web associated with the massive galaxy cluster MACS J0600.1-2008

Seiji Fujimoto, Guillaume Mahler, Lukas J. Furtak, Anna Niemiec, Nicolas Laporte, Mathilde Jauzac, Johan Richard, R. Massey, D. Espada, H. Ebeling, Anton M. Koekemoer, Ashish Kumar Meena, David J. Lagattuta, Brenda Frye, D. Eckert, Adi Zitrin, Jack Sayers, Kotaro Kohno, Felipe Andrade-Santos, Marceau Limousin, Harry Lu
article en
6 citations

Abstract

ABSTRACT MACS J0600.1-2008 (MACS0600) is an X-ray-luminous, massive galaxy cluster at $z_{\mathrm{d}}=0.43$, studied previously by the REionization LensIng Cluster Survey and ALMA Lensing Cluster Survey projects which revealed a complex, bimodal mass distribution and an intriguing high-redshift object behind it. Here, we report on the results of a combined analysis of the extended strong lensing (SL), X-ray, Sunyaev–Zeldovich (SZ), and galaxy luminosity-density properties of this system. Using new JWST and ground-based Gemini-N and Keck data, we obtain 13 new spectroscopic redshifts of multiply-imaged galaxies and identify 12 new photometric multiple-image systems and candidates, including two multiply-imaged $z\sim 7$ objects. Taking advantage of the larger areal coverage, our analysis reveals an additional bimodal, massive SL structure which we measure spectroscopically to lie adjacent to the cluster and whose existence was implied by previous SL-modelling analyses. While based in part on photometric systems identified in ground-based imaging requiring further verification, our extended SL model suggests that the cluster may have the second-largest critical area and effective Einstein radius observed to date, $A_{\mathrm{crit}}\simeq 2.16\, \mathrm{arcmin}^2$ and $\theta _{\mathrm{E}}=49.7^{\prime \prime }\pm 5.0^{\prime \prime }$ for a source at $z_{\mathrm{s}}=2$, enclosing a total mass of $M(\lt \theta _{\mathrm{E}})=(4.7\pm 0.7)\times 10^{14}\, \mathrm{M}_{\odot }$. These results are also supported by the galaxy luminosity distribution, and the SZ and X-ray data. Yet another, probably related massive cluster structure, discovered in X-rays 5 arcmin (1.7 Mpc) further north, suggests that MACS0600 is part of an even larger filamentary structure. This discovery adds to several recent detections of massive structures around SL galaxy clusters and establishes MACS0600 as a prime target for future high-redshift surveys with JWST.

Monthly Notices of the Royal Astronomical SocietyVol. 533(2)
Université Claude Bernard Lyon 1 (FR), École Normale Supérieure de Lyon (FR), University of Geneva (CH), California Institute of Technology (US), Ben-Gurion University of the Negev (IL), Centre National de la Recherche Scientifique (FR), Space Telescope Science Institute (US), University of Arizona (US), Universidad de Granada (ES), Durham University (GB), Berklee College of Music (US), Université Paris Cité (FR), Aix-Marseille Université (FR), University of Hawaii at Hilo (US), Sorbonne Université (FR), Centre de Recherche Astrophysique de Lyon (FR), Laboratoire d’Astrophysique de Marseille (FR), Laboratoire de Physique Nucléaire et de Hautes Énergies (FR), Center for Astrophysics Harvard & Smithsonian (US), Institut National de Physique Nucléaire et de Physique des Particules (FR), The University of Tokyo (JP), The University of Texas at Austin (US), University of KwaZulu-Natal (ZA)
National Science Foundation, National Aeronautics and Space Administration, W. M. Keck Foundation, California Institute of Technology, Space Telescope Science Institute, United States-Israel Binational Science Foundation, Centre National d’Etudes Spatiales, Nuclear Safety and Security Commission, Korea Astronomy and Space Science Institute, Israel Science Foundation, Centre National de la Recherche Scientifique, National Astronomical Observatory of Japan, Japan Society for the Promotion of Science
Openalex Percentile: Top 14%
Galaxies: Formation, Evolution, Phenomena
1.99
DOIOpen Access PDFOpenAlex
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