The Astrophysical Journal (Jan 2023)
The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies
- Brenda L. Frye,
- Massimo Pascale,
- Nicholas Foo,
- Reagen Leimbach,
- Nikhil Garuda,
- Paulina Soto Robles,
- Jake Summers,
- Carlos Diaz,
- Patrick Kamieneski,
- Lukas J. Furtak,
- Seth H. Cohen,
- Jose Diego,
- Benjamin Beauchesne,
- Rogier A. Windhorst,
- S. P. Willner,
- Anton M. Koekemoer,
- Adi Zitrin,
- Gabriel Caminha,
- Karina I. Caputi,
- Dan Coe,
- Christopher J. Conselice,
- Liang Dai,
- Hervé Dole,
- Simon P. Driver,
- Norman A. Grogin,
- Kevin Harrington,
- Rolf A. Jansen,
- Jean-Paul Kneib,
- Matt Lehnert,
- James Lowenthal,
- Madeline A. Marshall,
- Felipe Menanteau,
- Belén Alcalde Pampliega,
- Nor Pirzkal,
- Mari Polletta,
- Johan Richard,
- Aaron Robotham,
- Russell E. Ryan Jr.,
- Michael J. Rutkowski,
- Christóbal Sifón,
- Scott Tompkins,
- Daniel Wang,
- Haojing Yan,
- Min S. Yun
Affiliations
- Brenda L. Frye
- ORCiD
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- Massimo Pascale
- ORCiD
- Department of Astronomy, University of California , 501 Campbell Hall #3411, Berkeley, CA 94720, USA
- Nicholas Foo
- ORCiD
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- Reagen Leimbach
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- Nikhil Garuda
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- Paulina Soto Robles
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- Jake Summers
- ORCiD
- School of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287-1404, USA
- Carlos Diaz
- Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
- Patrick Kamieneski
- ORCiD
- School of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287-1404, USA
- Lukas J. Furtak
- ORCiD
- Physics Department, Ben-Gurion University of the Negev , P.O. Box 653, Be’er-Sheva, 8410501, Israel
- Seth H. Cohen
- ORCiD
- School of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287-1404, USA
- Jose Diego
- ORCiD
- FCA, Instituto de Fisica de Cantabria (UC-CSIC) , Av. de Los Castros s/n, E-39005 Santander, Spain
- Benjamin Beauchesne
- Institute of Physics , Laboratory of Astrophysics, Ecole Polytechnique Fed’erale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland; Univ Lyon , Univ Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, F-69230 Saint-Genis-Laval, France
- Rogier A. Windhorst
- ORCiD
- School of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287-1404, USA
- S. P. Willner
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Anton M. Koekemoer
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Adi Zitrin
- ORCiD
- Physics Department, Ben-Gurion University of the Negev , P.O. Box 653, Be’er-Sheva, 8410501, Israel
- Gabriel Caminha
- ORCiD
- Max-Planck-Institut für Astrophysik , Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
- Karina I. Caputi
- ORCiD
- Kapteyn Astronomical Institute, University of Groningen , Postbus 800, 9700 AV Groningen, The Netherlands; The Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen , Julian Maries Vej 30, DK-2100 Copenhagen ∅, Denmark
- Dan Coe
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Christopher J. Conselice
- ORCiD
- Jodrell Bank Centre for Astrophysics, University of Manchester , Oxford Road, Manchester, M13 9PL, UK
- Liang Dai
- ORCiD
- Department of Physics, University of California , 366 Physics North MC 7300, Berkeley, CA. 94720, USA
- Hervé Dole
- ORCiD
- Université Paris-Saclay , CNRS, Institut d’Astrophysique Spatiale, F-91405, Orsay, France
- Simon P. Driver
- ORCiD
- International Centre for Radio Astronomy Research (ICRAR) and the International Space Centre (ISC), The University of Western Australia , M468, 35 Stirling Highway, Crawley, WA 6009, Australia
- Norman A. Grogin
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Kevin Harrington
- ORCiD
- European Southern Observatory , Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
- Rolf A. Jansen
- ORCiD
- School of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287-1404, USA
- Jean-Paul Kneib
- ORCiD
- Institute of Physics , Laboratory of Astrophysics, Ecole Polytechnique Fed’erale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland; Aix Marseille Universite , CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, F-13388 Marseille, France
- Matt Lehnert
- ORCiD
- Univ Lyon , Univ Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, F-69230 Saint-Genis-Laval, France
- James Lowenthal
- ORCiD
- Smith College , Northampton, MA 01063, USA
- Madeline A. Marshall
- ORCiD
- National Research Council of Canada , Herzberg Astronomy & Astrophysics Research Centre, 5071 West Saanich Road, Victoria, BC, V9E 2E7, Canada; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia
- Felipe Menanteau
- ORCiD
- Department of Astronomy, University of Illinois at Urbana Champaign , 1002 W. Green Street, Urbana, IL 61801, USA; Center for Astrophysical Surveys , National Center for Supercomputing Applications, 1205 West Clark Street, Urbana, IL 61801, USA
- Belén Alcalde Pampliega
- European Southern Observatory , Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
- Nor Pirzkal
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Mari Polletta
- INAF—Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Milano , Via A. Corti 12, I-20133 Milan, Italy
- Johan Richard
- ORCiD
- Univ Lyon , Univ Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, F-69230 Saint-Genis-Laval, France
- Aaron Robotham
- ORCiD
- International Centre for Radio Astronomy Research (ICRAR) and the International Space Centre (ISC), The University of Western Australia , M468, 35 Stirling Highway, Crawley, WA 6009, Australia
- Russell E. Ryan Jr.
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Michael J. Rutkowski
- ORCiD
- Minnesota State University-Mankato, Telescope Science Institute , TN141, Mankato, MN 56001, USA
- Christóbal Sifón
- Instituto de Física, Pontificia Universidad Católica de Valparaíso , Casilla 4059, Valparaíso, Chile
- Scott Tompkins
- ORCiD
- School of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287-1404, USA
- Daniel Wang
- ORCiD
- Department of Astronomy, University of Massachusetts at Amherst , Amherst, MA 01003, USA
- Haojing Yan
- ORCiD
- Department of Physics and Astronomy, University of Missouri , Columbia, MO 65211, USA
- Min S. Yun
- ORCiD
- Department of Astronomy, University of Massachusetts at Amherst , Amherst, MA 01003, USA
- DOI
- https://doi.org/10.3847/1538-4357/acd929
- Journal volume & issue
-
Vol. 952,
no. 1
p. 81
Abstract
The massive galaxy cluster El Gordo ( z = 0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images. Eight bands of NIRCam imaging were obtained in the “Prime Extragalactic Areas for Reionization and Lensing Science” (“PEARLS”) program. Point-spread function–matched photometry across Hubble Space Telescope and NIRCam filters supplies new photometric redshifts. A new light-traces-mass lens model based on 56 image multiplicities identifies the two mass peaks and yields a mass estimate within 500 kpc of (7.0 ± 0.30) × 10 ^14 M _⊙ . A search for substructure in the 140 cluster members with spectroscopic redshifts confirms the two main mass components. The southeastern mass peak that contains the brightest cluster galaxy is more tightly bound than the northwestern one. The virial mass within 1.7 Mpc is (5.1 ± 0.60)×10 ^14 M _⊙ , lower than the lensing mass. A significant transverse velocity component could mean the virial mass is underestimated. We contribute one new member to the previously known z = 4.32 galaxy group. Intrinsic (delensed) positions of the five secure group members span a physical extent of ∼60 kpc. 13 additional candidates selected by spectroscopic/photometric constraints are small and faint, with a mean intrinsic luminosity ∼2.2 mag fainter than L ^* . NIRCam imaging admits a fairly wide range of brightnesses and morphologies for the group members, suggesting a more diverse galaxy population in this galaxy overdensity.
Keywords
