A Caltech Library Service

RELICS: The Reionization Lensing Cluster Survey and the Brightest High-z Galaxies

Salmon, Brett and Coe, Dan and Bradley, Larry and Bouwens, Rychard and Bradač, M. and Huang, Kuang-Han and Oesch, Pascal A. and Stark, Daniel and Sharon, Keren and Trenti, Michele and Avila, Roberto J. and Ogaz, Sara and Andrade-Santos, Felipe and Carrasco, Daniela and Cerny, Catherine and Dawson, William and Frye, Brenda L. and Hoag, Austin and Johnson, Traci Lin and Jones, Christine and Lam, Daniel and Lovisari, Lorenzo and Mainali, Ramesh and Past, Matt and Paterno-Mahler, Rachel and Peterson, Avery and Riess, Adam G. and Rodney, Steven A. and Sendra-Server, Irene and Strait, Victoria and Strolger, Louis-Gregory and Umetsu, Keiichi and Vulcani, Benedetta and Zitrin, Adi (2020) RELICS: The Reionization Lensing Cluster Survey and the Brightest High-z Galaxies. Astrophysical Journal, 889 (2). Art. No. 189. ISSN 1538-4357. doi:10.3847/1538-4357/ab5a8b.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a view into both the extremely distant and intrinsically faint galaxy populations. We present here the z ~ 6-8 candidate high-redshift galaxies from the Reionization Lensing Cluster Survey (RELICS), a Hubble and Spitzer Space Telescope survey of 41 massive galaxy clusters spanning an area of ≈200 arcmin². These clusters were selected to be excellent lenses, and we find similar high-redshift sample sizes and magnitude distributions as the Cluster Lensing And Supernova survey with Hubble (CLASH). We discover 257, 57, and eight candidate galaxies at z ~ 6, 7, and 8 respectively, (322 in total). The observed (lensed) magnitudes of the z ~ 6 candidates are as bright as AB mag ~23, making them among the brightest known at these redshifts, comparable with discoveries from much wider, blank-field surveys. RELICS demonstrates the efficiency of using strong gravitational lenses to produce high-redshift samples in the epoch of reionization. These brightly observed galaxies are excellent targets for follow-up study with current and future observatories, including the James Webb Space Telescope.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Salmon, Brett0000-0002-7453-7279
Coe, Dan0000-0001-7410-7669
Bradley, Larry0000-0002-7908-9284
Bouwens, Rychard0000-0002-4989-2471
Bradač, M.0000-0001-5984-0395
Huang, Kuang-Han0000-0001-7826-6448
Oesch, Pascal A.0000-0001-5851-6649
Sharon, Keren0000-0002-7559-0864
Trenti, Michele0000-0001-9391-305X
Avila, Roberto J.0000-0001-9364-5577
Andrade-Santos, Felipe0000-0002-8144-9285
Carrasco, Daniela0000-0002-3772-0330
Cerny, Catherine0000-0002-8261-9098
Dawson, William0000-0003-0248-6123
Hoag, Austin0000-0001-8989-2567
Johnson, Traci Lin0000-0002-8829-5303
Lam, Daniel0000-0002-6536-5575
Lovisari, Lorenzo0000-0002-3754-2415
Mainali, Ramesh0000-0003-0094-6827
Paterno-Mahler, Rachel0000-0003-3653-3741
Rodney, Steven A.0000-0003-1947-687X
Sendra-Server, Irene0000-0002-1148-8377
Strait, Victoria0000-0002-6338-7295
Strolger, Louis-Gregory0000-0002-7756-4440
Umetsu, Keiichi0000-0002-7196-4822
Vulcani, Benedetta0000-0003-0980-1499
Zitrin, Adi0000-0002-0350-4488
Additional Information:© 2020. The American Astronomical Society. Received 2019 May 31; revised 2019 July 30; accepted 2019 July 31; published 2020 February 5. We thank Gabriel Brammer for insightful discussions related to this work. This paper is based on observations made with the NASA/ESA Hubble Space Telescope. The Space Telescope Science Institute (STScI) is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under NASA contract NAS 5-26555. ACS was developed under NASA contract NAS 5-32864. The Spitzer Space Telescope is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. These observations are associated with program GO-14096. Archival data are associated with programs GO-9270, GO-12166, GO-12477, and GO-12253. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). This research made use of Photutils, an Astropy package for detection and photometry of astronomical sources (Bradley et al. 2019). This research made use of Astropy, a community-developed core Python package for Astronomy (The Astropy Collaboration et al. 2018). This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. F.A.-S. acknowledges support from Chandra grant G03-14131X. M.B. and V.S. acknowledge support by NASA through ADAP grant 80NSSC18K0945, NASA/HST through HST-GO-14096, HST-GO-13666 and two awards issued by Spitzer/JPL/Caltech associated with SRELICS_DEEP and SRELICS programs.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASANAS 5-26555
Department of Energy (DOE)DE-AC52-07NA27344
Subject Keywords:Galaxies ; galaxies: high-redshift
Issue or Number:2
Record Number:CaltechAUTHORS:20200206-125057438
Persistent URL:
Official Citation:Brett Salmon et al 2020 ApJ 889 189
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101168
Deposited By: George Porter
Deposited On:07 Feb 2020 18:25
Last Modified:16 Nov 2021 18:00

Repository Staff Only: item control page