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OBSERVATION and CONFIRMATION of SIX STRONG-LENSING SYSTEMS in the DARK ENERGY SURVEY SCIENCE VERIFICATION DATA

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posted on 2024-08-06, 10:23 authored by B. Nord, E. Buckley-Geer, H. Lin, H. T. Diehl, J. Helsby, N. Kuropatkin, A. Amara, T. Collett, S. Allam, G. B. Caminha, C. De Bom, S. Desai, H. Dumet-Montoya, M. Elidaiana S Da Pereira, D. A. Finley, B. Flaugher, C. Furlanetto, H. Gaitsch, M. Gill, K. W. Merritt, A. More, D. Tucker, A. Saro, E. S. Rykoff, E. Rozo, S. Birrer, F. B. Abdalla, A. Agnello, M. Auger, R. J. Brunner, M. Carrasco Kind, F. J. Castander, C. E. Cunha, L. N. Da Costa, R. J. Foley, D. W. Gerdes, Karl GlazebrookKarl Glazebrook, J. Gschwend, W. Hartley, R. Kessler, David Lagattuta, G. Lewis, M. A G Maia, M. Makler, F. Menanteau, A. Niernberg, D. Scolnic, J. D. Vieira, R. Gramillano, T. M C Abbott, M. Banerji, A. Benoit-Lévy, D. Brooks, D. L. Burke, D. Capozzi, A. Carnero Rosell, J. Carretero, C. B. D'Andrea, J. P. Dietrich, P. Doel, A. E. Evrard, J. Frieman, E. Gaztanaga, D. Gruen, K. Honscheid, D. J. James, K. Kuehn, T. S. Li, M. Lima, J. L. Marshall, P. Martini, P. Melchior, R. Miquel, E. Neilsen, R. C. Nichol, R. Ogando, A. A. Plazas, A. K. Romer, M. Sako, E. Sanchez, V. Scarpine, M. Schubnell, I. Sevilla-Noarbe, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E C Swanson, G. Tarle, J. Thaler, A. R. Walker, W. Wester, Y. Zhang
We report the observation and confirmation of the first group- and cluster-scale strong gravitational lensing systems found in Dark Energy Survey data. Through visual inspection of data from the Science Verification season, we identified 53 candidate systems. We then obtained spectroscopic follow-up of 21 candidates using the Gemini Multi-object Spectrograph at the Gemini South telescope and the Inamori-Magellan Areal Camera and Spectrograph at the Magellan/Baade telescope. With this follow-up, we confirmed six candidates as gravitational lenses: three of the systems are newly discovered, and the remaining three were previously known. Of the 21 observed candidates, the remaining 15 either were not detected in spectroscopic observations, were observed and did not exhibit continuum emission (or spectral features), or were ruled out as lensing systems. The confirmed sample consists of one group-scale and five galaxy-cluster-scale lenses. The lensed sources range in redshift z ∼ 0.80-3.2 and in i-band surface brightness i SB ∼ 23-25 mag arcsec-2 (2" aperture). For each of the six systems, we estimate the Einstein radius θ E and the enclosed mass M enc, which have ranges θ E ∼ 5"-9" and M enc ∼ 8 x1012 to 6 x1013 M o, respectively.

Funding

Ministry of Economy, Industry and Competitiveness

Fermilab

United States Department of Energy

European Commission

Directorate for Mathematical & Physical Sciences

Coordenação de Aperfeicoamento de Pessoal de Nível Superior

Office of Science

Science and Technology Facilities Council

Research England

Financiadora de Estudos e Projetos

Deutsche Forschungsgemeinschaft

Australian Research Council

Alfred P. Sloan Foundation

National Aeronautics and Space Administration

Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro

Ministerio de Educación Cultura y Deporte

National Council for Scientific and Technological Development

History

Available versions

PDF (Published version)

ISSN

1538-4357

Journal title

Astrophysical Journal

Volume

827

Issue

1

Article number

article no. 51

Pagination

1 p

Publisher

Institute of Physics Publishing, Inc.

Copyright statement

Copyright © 2016. The American Astronomical Society. All rights reserved. The published version is reproduced here in accordance with the copyright policy of the publisher and can be also be located at https://doi.org/10.3847/0004-637X/827/1/51.

Language

eng

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