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Title: Discovery of the Lensed Quasar System DES J0408-5354

We report the discovery and spectroscopic confirmation of the quad-like lensed quasar system DES J0408-5354 found in the Dark Energy Survey (DES) Year 1 (Y1) data. This system was discovered during a search for DES Y1 strong lensing systems using a method that identified candidates as red galaxies with multiple blue neighbors. DES J0408-5354 consists of a central red galaxy surrounded by three bright ($$i\lt 20$$) blue objects and a fourth red object. Subsequent spectroscopic observations using the Gemini South telescope confirmed that the three blue objects are indeed the lensed images of a quasar with redshift z = 2.375, and that the central red object is an early-type lensing galaxy with redshift z = 0.597. DES J0408-5354 is the first quad lensed quasar system to be found in DES and begins to demonstrate the potential of DES to discover and dramatically increase the sample size of these very rare objects.
Authors:
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Publication Date:
Report Number(s):
FERMILAB-PUB-17-029-AE-CD; arXiv:1702.00072
Journal ID: ISSN 2041-8213; 1511649
Grant/Contract Number:
AC02-07CH11359; AC05-00OR22725; AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Letters
Additional Journal Information:
Journal Volume: 838; Journal Issue: 2; Journal ID: ISSN 2041-8213
Publisher:
Institute of Physics (IOP)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
DES Collaboration
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; gravitational lensing: strong; quasars: general; surveys
OSTI Identifier:
1350945
Alternate Identifier(s):
OSTI ID: 1345606; OSTI ID: 1360907

Lin, H., Buckley-Geer, E., Agnello, A., Ostrovski, F., McMahon, R. G., Nord, B., Kuropatkin, N., Tucker, D. L., Treu, T., Chan, J. H. H., Suyu, S. H., Diehl, H. T., Collett, T., Gill, M. S. S., More, A., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., Frieman, J., Marshall, P. J., Meylan, G., Rusu, C. E., Abbott, T. M. C., Abdalla, F. B., Allam, S., Banerji, M., Bechtol, K., Benoit-Lévy, A., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Castander, F. J., Crocce, M., D’Andrea, C. B., Costa, L. N. da, Desai, S., Dietrich, J. P., Eifler, T. F., Finley, D. A., Flaugher, B., Fosalba, P., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Li, T. S., Lima, M., Maia, M. A. G., March, M., Marshall, J. L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Ogando, R. L. C., Plazas, A. A., Romer, A. K., Sanchez, E., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., and Walker, A. R.. Discovery of the Lensed Quasar System DES J0408-5354. United States: N. p., Web. doi:10.3847/2041-8213/aa624e.
Lin, H., Buckley-Geer, E., Agnello, A., Ostrovski, F., McMahon, R. G., Nord, B., Kuropatkin, N., Tucker, D. L., Treu, T., Chan, J. H. H., Suyu, S. H., Diehl, H. T., Collett, T., Gill, M. S. S., More, A., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., Frieman, J., Marshall, P. J., Meylan, G., Rusu, C. E., Abbott, T. M. C., Abdalla, F. B., Allam, S., Banerji, M., Bechtol, K., Benoit-Lévy, A., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Castander, F. J., Crocce, M., D’Andrea, C. B., Costa, L. N. da, Desai, S., Dietrich, J. P., Eifler, T. F., Finley, D. A., Flaugher, B., Fosalba, P., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Li, T. S., Lima, M., Maia, M. A. G., March, M., Marshall, J. L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Ogando, R. L. C., Plazas, A. A., Romer, A. K., Sanchez, E., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., & Walker, A. R.. Discovery of the Lensed Quasar System DES J0408-5354. United States. doi:10.3847/2041-8213/aa624e.
Lin, H., Buckley-Geer, E., Agnello, A., Ostrovski, F., McMahon, R. G., Nord, B., Kuropatkin, N., Tucker, D. L., Treu, T., Chan, J. H. H., Suyu, S. H., Diehl, H. T., Collett, T., Gill, M. S. S., More, A., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., Frieman, J., Marshall, P. J., Meylan, G., Rusu, C. E., Abbott, T. M. C., Abdalla, F. B., Allam, S., Banerji, M., Bechtol, K., Benoit-Lévy, A., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Castander, F. J., Crocce, M., D’Andrea, C. B., Costa, L. N. da, Desai, S., Dietrich, J. P., Eifler, T. F., Finley, D. A., Flaugher, B., Fosalba, P., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Li, T. S., Lima, M., Maia, M. A. G., March, M., Marshall, J. L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Ogando, R. L. C., Plazas, A. A., Romer, A. K., Sanchez, E., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., and Walker, A. R.. 2017. "Discovery of the Lensed Quasar System DES J0408-5354". United States. doi:10.3847/2041-8213/aa624e. https://www.osti.gov/servlets/purl/1350945.
@article{osti_1350945,
title = {Discovery of the Lensed Quasar System DES J0408-5354},
author = {Lin, H. and Buckley-Geer, E. and Agnello, A. and Ostrovski, F. and McMahon, R. G. and Nord, B. and Kuropatkin, N. and Tucker, D. L. and Treu, T. and Chan, J. H. H. and Suyu, S. H. and Diehl, H. T. and Collett, T. and Gill, M. S. S. and More, A. and Amara, A. and Auger, M. W. and Courbin, F. and Fassnacht, C. D. and Frieman, J. and Marshall, P. J. and Meylan, G. and Rusu, C. E. and Abbott, T. M. C. and Abdalla, F. B. and Allam, S. and Banerji, M. and Bechtol, K. and Benoit-Lévy, A. and Bertin, E. and Brooks, D. and Burke, D. L. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and Castander, F. J. and Crocce, M. and D’Andrea, C. B. and Costa, L. N. da and Desai, S. and Dietrich, J. P. and Eifler, T. F. and Finley, D. A. and Flaugher, B. and Fosalba, P. and García-Bellido, J. and Gaztanaga, E. and Gerdes, D. W. and Goldstein, D. A. and Gruen, D. and Gruendl, R. A. and Gschwend, J. and Gutierrez, G. and Honscheid, K. and James, D. J. and Kuehn, K. and Lahav, O. and Li, T. S. and Lima, M. and Maia, M. A. G. and March, M. and Marshall, J. L. and Martini, P. and Melchior, P. and Menanteau, F. and Miquel, R. and Ogando, R. L. C. and Plazas, A. A. and Romer, A. K. and Sanchez, E. and Schindler, R. and Schubnell, M. and Sevilla-Noarbe, I. and Smith, M. and Smith, R. C. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Thomas, D. and Walker, A. R.},
abstractNote = {We report the discovery and spectroscopic confirmation of the quad-like lensed quasar system DES J0408-5354 found in the Dark Energy Survey (DES) Year 1 (Y1) data. This system was discovered during a search for DES Y1 strong lensing systems using a method that identified candidates as red galaxies with multiple blue neighbors. DES J0408-5354 consists of a central red galaxy surrounded by three bright ($i\lt 20$) blue objects and a fourth red object. Subsequent spectroscopic observations using the Gemini South telescope confirmed that the three blue objects are indeed the lensed images of a quasar with redshift z = 2.375, and that the central red object is an early-type lensing galaxy with redshift z = 0.597. DES J0408-5354 is the first quad lensed quasar system to be found in DES and begins to demonstrate the potential of DES to discover and dramatically increase the sample size of these very rare objects.},
doi = {10.3847/2041-8213/aa624e},
journal = {The Astrophysical Journal. Letters},
number = 2,
volume = 838,
place = {United States},
year = {2017},
month = {3}
}