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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
A dusty star-forming galaxy at z = 6 revealed by strong gravitational lensing
Nature Astronomy, Volume 2, No. 1, Year 2018
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Description
Since their discovery, submillimetre-selected galaxies 1,2 have revolutionized the field of galaxy formation and evolution. From the hundreds of square degrees mapped at submillimetre wavelengths 3-5, only a handful of sources have been confirmed to lie at z > 5 (refs 6-10 ) and only two at z ≥ 6 (refs 11,12 ). All of these submillimetre galaxies are rare examples of extreme starburst galaxies with star formation rates of ≳1,000 M⊙yr-1 and therefore are not representative of the general population of dusty star-forming galaxies. Consequently, our understanding of the nature of these sources, at the earliest epochs, is still incomplete. Here, we report the spectroscopic identification of a gravitationally amplified (μ = 9.3 ± 1.0) dusty star-forming galaxy at z = 6.027. After correcting for gravitational lensing, we derive an intrinsic less-extreme star formation rate of 380 ± 50 M⊙ yr-1 for this source and find that its gas and dust properties are similar to those measured for local ultra luminous infrared galaxies, extending the local trends to a poorly explored territory in the early Universe. The star-formation efficiency of this galaxy is similar to those measured in its local analogues 13, despite a ∼12 Gyr difference in cosmic time. © 2017 The Author(s).
Authors & Co-Authors
Zavala, Jorge A.
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
United States, Austin
The University of Texas at Austin
Hughes, David H.
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Yun, Minsu
United States, Amherst
University of Massachusetts Amherst
Ivison, Robert J.
Germany, Garching Bei Munchen
European Southern Observatory
United Kingdom, Edinburgh
The University of Edinburgh
Valiante, Elisabetta
United Kingdom, Cardiff
Cardiff University
Wilner, David J.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Spilker, Justin S.
United States, Tucson
The University of Arizona
Aretxaga, Itziar
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Eales, Stephen A.
United Kingdom, Cardiff
Cardiff University
Avila-Reese, Vladimir
Mexico, Mexico
Universidad Nacional Autónoma de México
Cooray, Asantha Roshan
United States, Irvine
University of California, Irvine
Dannerbauer, Helmut
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
James S. Dunlop, James S.
United Kingdom, Edinburgh
The University of Edinburgh
Dunne, Loretta
United Kingdom, Edinburgh
The University of Edinburgh
United Kingdom, Cardiff
Cardiff University
Gómez-Ruiz, Arturo I.
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Michałowski, Michał J.
Poland, Poznan
Uniwersytet Im. Adama Mickiewicza w Poznaniu
Nayyeri, Hooshang
United States, Irvine
University of California, Irvine
Oteo, Iván
Germany, Garching Bei Munchen
European Southern Observatory
United Kingdom, Edinburgh
The University of Edinburgh
Sánchez-Argüelles, D. O.
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Serjeant, Stephen
United Kingdom, Milton Keynes
The Open University
Smith, Matthew W.L.
United Kingdom, Cardiff
Cardiff University
van der Werf, Paul P.
Netherlands, Leiden
Universiteit Leiden
Wilson, Grant W.
United States, Amherst
University of Massachusetts Amherst
Statistics
Citations: 70
Authors: 23
Affiliations: 15
Identifiers
Doi:
10.1038/s41550-017-0297-8
ISSN:
23973366
Study Design
Cross Sectional Study