COSMOGRAIL: The cosmological monitoring of gravitational lenses

F. Courbin; V. Bonvin; E. Buckley-Geer; C. D. Fassnacht; J. Frieman; H. Lin; P. J. Marshall; S. H. Suyu; T. Treu; T. Anguita; V. Motta; G. Meylan; E. Paic; M. Tewes; A. Agnello; D. C.Y. Chao; M. Chijani; D. Gilman; K. Rojas; P. Williams; A. Hempel; S. Kim; R. Lachaume; M. Rabus; T. M.C. Abbott; S. Allam; J. Annis; M. Banerji; K. Bechtol; A. Benoit-Lévy; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; C. B. D'Andrea; L. N. Da Costa; C. Davis; D. L. Depoy; S. Desai; B. Flaugher; P. Fosalba; J. García-Bellido; E. Gaztanaga; D. A. Goldstein; D. Gruen; R. A. Gruendl; J. Gschwend; G. Gutierrez; K. Honscheid; D. J. James; K. Kuehn; S. Kuhlmann; N. Kuropatkin; O. Lahav; M. Lima; M. A.G. Maia; M. March; J. L. Marshall; R. G. McMahon; F. Menanteau; R. Miquel; B. Nord; A. A. Plazas; E. Sanchez; V. Scarpine; R. Schindler; M. Schubnell; I. Sevilla-Noarbe; M. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; G. Tarle; D. L. Tucker; A. R. Walker; W. Wester

doi:10.1051/0004-6361/201731461

COSMOGRAIL: The cosmological monitoring of gravitational lenses

F. Courbin, V. Bonvin, E. Buckley-Geer, C. D. Fassnacht, J. Frieman, H. Lin, P. J. Marshall, S. H. Suyu, T. Treu, T. Anguita, V. Motta, G. Meylan, E. Paic, M. Tewes, A. Agnello, D. C.Y. Chao, M. Chijani, D. Gilman, K. Rojas, P. WilliamsA. Hempel, S. Kim, R. Lachaume, M. Rabus, T. M.C. Abbott, S. Allam, J. Annis, M. Banerji, K. Bechtol, A. Benoit-Lévy, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, C. B. D'Andrea, L. N. Da Costa, C. Davis, D. L. Depoy, S. Desai, B. Flaugher, P. Fosalba, J. García-Bellido, E. Gaztanaga, D. A. Goldstein, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, K. Honscheid, D. J. James, K. Kuehn, S. Kuhlmann, N. Kuropatkin, O. Lahav, M. Lima, M. A.G. Maia, M. March, J. L. Marshall, R. G. McMahon, F. Menanteau, R. Miquel, B. Nord, A. A. Plazas, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, G. Tarle, D. L. Tucker, A. R. Walker, W. Wester

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Abstract

We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quadruple imaged quasar found in the Dark Energy Survey (DES). Our result is made possible by implementing a new observational strategy using almost daily observations with the MPIA 2.2 m telescope at La Silla observatory and deep exposures reaching a signal-to-noise ratio of about 1000 per quasar image. This data qualityallows us to catch small photometric variations (a few mmag rms) of the quasar, acting on temporal scales much shorter than microlensing, and hence making the time delay measurement very robust against microlensing. In only seven months we very accurately measured one of the time delays in DES J04085354: - "t(AB) = 112.1 ± 2.1 days (1.8%) using only the MPIA 2.2 m data. In combination with data taken with the 1.2 m Euler Swiss telescope, we also measured two delays involving the D component of the system - "t(AD) = ± 12.8 days (8.2%) and - "t(BD) = 42.4 ± 17.6 days (41%), where all the error bars include systematics. Turning these time delays into cosmological constraints will require deep Hubble Space Telescope (HST) imaging or ground-based adaptive optics (AO), and information on the velocity field of the lensing galaxy.

Original language	English
Article number	A71
Journal	Astronomy and Astrophysics
Volume	609
DOIs	https://doi.org/10.1051/0004-6361/201731461
State	Published - Jan 1 2018

Funding

Acknowledgements. The authors would like to thank R. Gredel for his help in setting up the programme at the MPIA 2.2 m telescope. This work is supported by the Swiss National Science Foundation (SNSF). S. H. Suyu and D. C. Y. Chao thank the Max Planck Society for support through the Max Planck Research Group for SHS. T. Treu acknowledges support by the National Science Foundation through grant 1450141, by the Packard Foundation through a Packard Research Fellowship and by the UCLA Dean of Physical Sciences. K.Rojas is supported by Becas de Doctorado Nacional CONICYT 2017. T. Anguita and M. Chijani acknowledge support by proyecto FONDECYT 11130630 and by the Ministry for the Economy, Development, and Tourism’s Programa Inicativa Científica Milenio through grant IC 12009, awarded to The Millennium Institute of Astrophysics (MAS). M. Tewes acknowledges support from the DFG grant Hi 1495/2-1. J. Garcia-Bellido is supported by the Research Project FPA2015-68048 [MINECO-FEDER], and the Centro de Exce-lencia Severo Ochoa Program SEV-2012-0249. C. D. Fassnacht acknowledges support from the National Science Foundation grant AST-1312329 and from the UC Davis Physics Department and Dean of Math and Physical Sciences. Funding for the DES Projects has been provided by the US Department of Energy, the US National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desen-volvimento Científico e Tecnológico and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey. The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenössische Tech-nische Hochschule (ETH) Zürich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ciències de l’Espai (IEEC/CSIC), the Institut de Física d’Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universität München and the associated Excellence Cluster Universe, the University of Michigan, the National Optical Astronomy Observatory, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium. The DES data management system is supported by the National Science Foundation under Grant Number AST-1138766. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-88861, FPA2015-68048, SEV-2012-0234, SEV-2012-0249, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA programme of the Generalitat de Catalunya.

Funders	Funder number
Centro de Exce-lencia Severo Ochoa Program	AST-1312329, SEV-2012-0249
Collaborating Institutions in the Dark Energy Survey	AST-1138766
Conselho Nacional de Desen-volvimento Científico e Tecnológico
Kavli Institute of Cosmological Physics at the University of Chicago
MINECO-FEDER
Ministry for the Economy, Development, and Tourism’s Programa Inicativa Científica Milenio	IC 12009
Ministry of Science and Education of Spain
Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University
National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
UC Davis Physics Department and Dean of Math and Physical Sciences
US Department of Energy
US National Science Foundation
National Science Foundation
David and Lucile Packard Foundation
Directorate for Mathematical and Physical Sciences	1138766, 1312329, 1450141
University of California, Los Angeles
Higher Education Funding Council for England
Center for Cosmology and Astroparticle Physics, Ohio State University
Science and Technology Facilities Council	ST/N000927/1
European Commission
Deutsche Forschungsgemeinschaft	Hi 1495/2-1, FPA2015-68048
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Generalitat de Catalunya
Agencia Nacional de Investigación y Desarrollo
Ministerio de Economía y Competitividad	ESP2015-88861, MDM-2015-0509, SEV-2012-0234, AYA2015-71825
Ministério da Ciência, Tecnologia e Inovação
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Financiadora de Estudos e Projetos
European Regional Development Fund
Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica	11130630

Keywords

cosmological parameters
data analysis
gravitational lensing
methods
strong

Access to Document

10.1051/0004-6361/201731461

Cite this

Courbin, F., Bonvin, V., Buckley-Geer, E., Fassnacht, C. D., Frieman, J., Lin, H., Marshall, P. J., Suyu, S. H., Treu, T., Anguita, T., Motta, V., Meylan, G., Paic, E., Tewes, M., Agnello, A., Chao, D. C. Y., Chijani, M., Gilman, D., Rojas, K., ... Wester, W. (2018). COSMOGRAIL: The cosmological monitoring of gravitational lenses. Astronomy and Astrophysics, 609, Article A71. https://doi.org/10.1051/0004-6361/201731461

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title = "COSMOGRAIL: The cosmological monitoring of gravitational lenses",

abstract = "We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quadruple imaged quasar found in the Dark Energy Survey (DES). Our result is made possible by implementing a new observational strategy using almost daily observations with the MPIA 2.2 m telescope at La Silla observatory and deep exposures reaching a signal-to-noise ratio of about 1000 per quasar image. This data qualityallows us to catch small photometric variations (a few mmag rms) of the quasar, acting on temporal scales much shorter than microlensing, and hence making the time delay measurement very robust against microlensing. In only seven months we very accurately measured one of the time delays in DES J04085354: - {"}t(AB) = 112.1 ± 2.1 days (1.8%) using only the MPIA 2.2 m data. In combination with data taken with the 1.2 m Euler Swiss telescope, we also measured two delays involving the D component of the system - {"}t(AD) = ± 12.8 days (8.2%) and - {"}t(BD) = 42.4 ± 17.6 days (41%), where all the error bars include systematics. Turning these time delays into cosmological constraints will require deep Hubble Space Telescope (HST) imaging or ground-based adaptive optics (AO), and information on the velocity field of the lensing galaxy.",

keywords = "cosmological parameters, data analysis, gravitational lensing, methods, strong",

author = "F. Courbin and V. Bonvin and E. Buckley-Geer and Fassnacht, {C. D.} and J. Frieman and H. Lin and Marshall, {P. J.} and Suyu, {S. H.} and T. Treu and T. Anguita and V. Motta and G. Meylan and E. Paic and M. Tewes and A. Agnello and Chao, {D. C.Y.} and M. Chijani and D. Gilman and K. Rojas and P. Williams and A. Hempel and S. Kim and R. Lachaume and M. Rabus and Abbott, {T. M.C.} and S. Allam and J. Annis and M. Banerji and K. Bechtol and A. Benoit-L{\'e}vy and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and D'Andrea, {C. B.} and {Da Costa}, {L. N.} and C. Davis and Depoy, {D. L.} and S. Desai and B. Flaugher and P. Fosalba and J. Garc{\'i}a-Bellido and E. Gaztanaga and Goldstein, {D. A.} and D. Gruen and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and K. Honscheid and James, {D. J.} and K. Kuehn and S. Kuhlmann and N. Kuropatkin and O. Lahav and M. Lima and Maia, {M. A.G.} and M. March and Marshall, {J. L.} and McMahon, {R. G.} and F. Menanteau and R. Miquel and B. Nord and Plazas, {A. A.} and E. Sanchez and V. Scarpine and R. Schindler and M. Schubnell and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and F. Sobreira and E. Suchyta and G. Tarle and Tucker, {D. L.} and Walker, {A. R.} and W. Wester",

note = "Publisher Copyright: {\textcopyright} ESO, 2018.",

year = "2018",

month = jan,

day = "1",

doi = "10.1051/0004-6361/201731461",

language = "English",

volume = "609",

journal = "Astronomy and Astrophysics",

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Courbin, F, Bonvin, V, Buckley-Geer, E, Fassnacht, CD, Frieman, J, Lin, H, Marshall, PJ, Suyu, SH, Treu, T, Anguita, T, Motta, V, Meylan, G, Paic, E, Tewes, M, Agnello, A, Chao, DCY, Chijani, M, Gilman, D, Rojas, K, Williams, P, Hempel, A, Kim, S, Lachaume, R, Rabus, M, Abbott, TMC, Allam, S, Annis, J, Banerji, M, Bechtol, K, Benoit-Lévy, A, Brooks, D, Burke, DL, Carnero Rosell, A, Carrasco Kind, M, Carretero, J, D'Andrea, CB, Da Costa, LN, Davis, C, Depoy, DL, Desai, S, Flaugher, B, Fosalba, P, García-Bellido, J, Gaztanaga, E, Goldstein, DA, Gruen, D, Gruendl, RA, Gschwend, J, Gutierrez, G, Honscheid, K, James, DJ, Kuehn, K, Kuhlmann, S, Kuropatkin, N, Lahav, O, Lima, M, Maia, MAG, March, M, Marshall, JL, McMahon, RG, Menanteau, F, Miquel, R, Nord, B, Plazas, AA, Sanchez, E, Scarpine, V, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Sobreira, F, Suchyta, E, Tarle, G, Tucker, DL, Walker, AR & Wester, W 2018, 'COSMOGRAIL: The cosmological monitoring of gravitational lenses', Astronomy and Astrophysics, vol. 609, A71. https://doi.org/10.1051/0004-6361/201731461

TY - JOUR

T1 - COSMOGRAIL

T2 - The cosmological monitoring of gravitational lenses

AU - Courbin, F.

AU - Bonvin, V.

AU - Buckley-Geer, E.

AU - Fassnacht, C. D.

AU - Frieman, J.

AU - Lin, H.

AU - Marshall, P. J.

AU - Suyu, S. H.

AU - Treu, T.

AU - Anguita, T.

AU - Motta, V.

AU - Meylan, G.

AU - Paic, E.

AU - Tewes, M.

AU - Agnello, A.

AU - Chao, D. C.Y.

AU - Chijani, M.

AU - Gilman, D.

AU - Rojas, K.

AU - Williams, P.

AU - Hempel, A.

AU - Kim, S.

AU - Lachaume, R.

AU - Rabus, M.

AU - Abbott, T. M.C.

AU - Allam, S.

AU - Annis, J.

AU - Banerji, M.

AU - Bechtol, K.

AU - Benoit-Lévy, A.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - D'Andrea, C. B.

AU - Da Costa, L. N.

AU - Davis, C.

AU - Depoy, D. L.

AU - Desai, S.

AU - Flaugher, B.

AU - Fosalba, P.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Goldstein, D. A.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Honscheid, K.

AU - James, D. J.

AU - Kuehn, K.

AU - Kuhlmann, S.

AU - Kuropatkin, N.

AU - Lahav, O.

AU - Lima, M.

AU - Maia, M. A.G.

AU - March, M.

AU - Marshall, J. L.

AU - McMahon, R. G.

AU - Menanteau, F.

AU - Miquel, R.

AU - Nord, B.

AU - Plazas, A. A.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schindler, R.

AU - Schubnell, M.

AU - Sevilla-Noarbe, I.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Tarle, G.

AU - Tucker, D. L.

AU - Walker, A. R.

AU - Wester, W.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quadruple imaged quasar found in the Dark Energy Survey (DES). Our result is made possible by implementing a new observational strategy using almost daily observations with the MPIA 2.2 m telescope at La Silla observatory and deep exposures reaching a signal-to-noise ratio of about 1000 per quasar image. This data qualityallows us to catch small photometric variations (a few mmag rms) of the quasar, acting on temporal scales much shorter than microlensing, and hence making the time delay measurement very robust against microlensing. In only seven months we very accurately measured one of the time delays in DES J04085354: - "t(AB) = 112.1 ± 2.1 days (1.8%) using only the MPIA 2.2 m data. In combination with data taken with the 1.2 m Euler Swiss telescope, we also measured two delays involving the D component of the system - "t(AD) = ± 12.8 days (8.2%) and - "t(BD) = 42.4 ± 17.6 days (41%), where all the error bars include systematics. Turning these time delays into cosmological constraints will require deep Hubble Space Telescope (HST) imaging or ground-based adaptive optics (AO), and information on the velocity field of the lensing galaxy.

AB - We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quadruple imaged quasar found in the Dark Energy Survey (DES). Our result is made possible by implementing a new observational strategy using almost daily observations with the MPIA 2.2 m telescope at La Silla observatory and deep exposures reaching a signal-to-noise ratio of about 1000 per quasar image. This data qualityallows us to catch small photometric variations (a few mmag rms) of the quasar, acting on temporal scales much shorter than microlensing, and hence making the time delay measurement very robust against microlensing. In only seven months we very accurately measured one of the time delays in DES J04085354: - "t(AB) = 112.1 ± 2.1 days (1.8%) using only the MPIA 2.2 m data. In combination with data taken with the 1.2 m Euler Swiss telescope, we also measured two delays involving the D component of the system - "t(AD) = ± 12.8 days (8.2%) and - "t(BD) = 42.4 ± 17.6 days (41%), where all the error bars include systematics. Turning these time delays into cosmological constraints will require deep Hubble Space Telescope (HST) imaging or ground-based adaptive optics (AO), and information on the velocity field of the lensing galaxy.

KW - cosmological parameters

KW - data analysis

KW - gravitational lensing

KW - methods

KW - strong

UR - http://www.scopus.com/inward/record.url?scp=85040446695&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201731461

DO - 10.1051/0004-6361/201731461

M3 - Article

AN - SCOPUS:85040446695

SN - 0004-6361

VL - 609

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A71

ER -

COSMOGRAIL: The cosmological monitoring of gravitational lenses

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