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

  • Brett Salmon
  • , Dan Coe
  • , Larry Bradley
  • , Rychard Bouwens
  • , Marusa Bradač
  • , Kuang Han Huang
  • , Pascal A. Oesch
  • , Daniel Stark
  • , Keren Sharon
  • , Michele Trenti
  • , Roberto J. Avila
  • , Sara Ogaz
  • , Felipe Andrade-Santos
  • , Daniela Carrasco
  • , Catherine Cerny
  • , William Dawson
  • , Brenda L. Frye
  • , Austin Hoag
  • , Traci Lin Johnson
  • , Christine Jones
  • Daniel Lam, Lorenzo Lovisari, Ramesh Mainali, Matt Past, Rachel Paterno-Mahler, Avery Peterson, Adam G. Riess, Steven A. Rodney, Russel E. Ryan, Irene Sendra-Server, Victoria Strait, Louis Gregory Strolger, Keiichi Umetsu, Benedetta Vulcani, Adi Zitrin

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

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 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.

Original languageEnglish (US)
Article number189
JournalAstrophysical Journal
Volume889
Issue number2
DOIs
StatePublished - Feb 1 2020

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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  • Brightest high-z galaxies in RELICS clusters

    Salmon, B. (Creator), Coe, D. (Creator), Bradley, L. (Creator), Bouwens, R. (Creator), Bradač, M. (Contributor), Huang, K.-H. (Creator), Oesch, P. A. (Creator), Stark, D. (Creator), Sharon, K. (Creator), Trenti, M. (Creator), Avila, R. J. (Creator), Ogaz, S. (Creator), Andrade-Santos, F. (Creator), Carrasco, D. (Creator), Cerny, C. (Creator), Dawson, W. (Creator), Frye, B. L. (Creator), Hoag, A. (Creator), Johnson, T. L. (Creator), Jones, C. (Creator), Lam, D. (Creator), Lovisari, L. (Creator), Mainali, R. (Creator), Past, M. (Creator), Paterno-Mahler, R. (Creator), Peterson, A. (Creator), Riess, A. G. (Creator), Rodney, S. A. (Creator), Ryan, R. E. (Creator), Sendra-Server, I. (Creator), Strait, V. (Creator), Strolger, L.-G. (Creator), Umetsu, K. (Creator), Vulcani, B. (Creator) & Zitrin, A. (Creator), Centre de Donnees Strasbourg (CDS), 2021

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