RELICS: small lensed <i>z</i> ≥ 5.5 galaxies selected as potential Lyman continuum leakers-Reference-Cited by-同舟云学术

RELICS: small lensed z ≥ 5.5 galaxies selected as potential Lyman continuum leakers

Published:2022-08-17 Issue:2 Volume:516 Page:2162-2170
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Neufeld Chloe¹²,Strait Victoria¹³,Bradač Maruša¹⁴^ORCID,Lemaux Brian C¹⁵^ORCID,Coe Dan⁶,Yang Lilan⁷⁸^ORCID,Treu Tommaso⁸^ORCID,Zitrin Adi⁹^ORCID,Nonino Mario¹⁰,Bradley Larry⁶,Sharon Keren¹¹^ORCID

Affiliation:

1. Physics and Astronomy Department, University of California , Davis, CA 95616, USA

2. Astronomy Department, Yale University , New Haven, CT 06511, USA

3. Cosmic Dawn Center (DAWN), Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N, Denmark

4. Department of Mathematics and Physics, University of Ljubljana , Jadranska ulica 19, SI-1000 Ljubljana, Slovenia

5. Gemini Observatory , NSF’s NOIRLab, 670 N. A’ohoku Place, Hilo, HI 96720, USA

6. Space Telescope Science Institute , Baltimore, MD 21218, USA

7. School of Physics and Technology, Wuhan University , Wuhan 430072, China

8. Department of Physics and Astronomy, University of California , Los Angeles, CA 90095-1547, USA

9. Department of Physics, Ben-Gurion University , Be’er-Sheva 84105, Israel

10. INAF – Osservatorio Astronomico di Trieste , via G. B. Tiepolo 11, I-34131 Trieste, Italy

11. Department of Astronomy, University of Michigan , 1085 South University Ave, Ann Arbor, MI 48109, USA

Abstract

ABSTRACT We present size measurements of 78 high-redshift (z ≥ 5.5) galaxy candidates from the Reionization Lensing Cluster Survey (RELICS). These distant galaxies are well resolved due to the gravitational lensing power of foreground galaxy clusters, imaged by the Hubble Space Telescope and the Spitzer Space Telescope. We compute sizes using the forward-modelling code lenstruction and account for magnification using public lens models. The resulting size–magnitude measurements confirm the existence of many small galaxies with effective radii Reff < 200 pc in the early Universe, in agreement with previous studies. In addition, we highlight compact and highly star-forming sources with star formation rate surface densities $\Sigma _\text{SFR}\gt 10\, \mathrm{M}_\odot \, \text{yr}^{-1}\, \text{kpc}^{-2}$ as possible Lyman continuum leaking candidates that could be major contributors to the process of reionization. Future spectroscopic follow-up of these compact galaxies (e.g. with the James Webb Space Telescope) will further clarify their role in reionization and the physics of early star formation.

Funder

NASA

JPL

Caltech

National Science Foundation

ESA

Space Telescope Science Institute

Jet Propulsion Laboratory

California Institute of Technology

ARRS

Publisher

Oxford University Press (OUP)