COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. XVI. Time 
delays for the quadruply imaged quasar DES J0408-5354 with high-cadence 
photometric monitoring

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.; Williams, P.; Hempel, A.; Kim, S.; Lachaume, R.; Rabus, M.; Abbott, T. M. C.; Allam, S.; Annis, J.; Banerji, M.; Bechtol, K.; Benoit-Lévy, A.; Brooks, D.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; D'Andrea, C. B.; da Costa, L. N.; Davis, C.; DePoy, D. L.; Desai, S.; Flaugher, B.; Fosalba, P.; García-Bellido, J.; Gaztanaga, E.; Goldstein, D. A.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Honscheid, K.; James, D. J.; Kuehn, K.; Kuhlmann, S.; Kuropatkin, N.; Lahav, O.; Lima, M.; Maia, M. A. G.; March, M.; Marshall, J. L.; McMahon, R. G.; Menanteau, F.; Miquel, R.; Nord, B.; Plazas, A. A.; Sanchez, E.; Scarpine, V.; Schindler, R.; Schubnell, M.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Tarle, G.; Tucker, D. L.; Walker, A. R.; Wester, W.

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COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. XVI. Time delays for the quadruply imaged quasar DES J0408-5354 with high-cadence photometric monitoring

MPS-Authors

Courbin, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bonvin, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Buckley-Geer, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fassnacht, C. D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Frieman, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lin, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Marshall, P. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suyu, S. H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Treu, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Anguita, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Motta, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Meylan, G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Paic, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tewes, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Agnello, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chao, D. C. -Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chijani, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gilman, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rojas, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Williams, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hempel, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lachaume, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rabus, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Abbott, T. M. C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Allam, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Annis, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Banerji, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bechtol, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Benoit-Lévy, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Brooks, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Burke, D. L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carnero Rosell, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carrasco Kind, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carretero, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

D'Andrea, C. B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

da Costa, L. N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Davis, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

DePoy, D. L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Desai, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Flaugher, B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fosalba, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

García-Bellido, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gaztanaga, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Goldstein, D. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gruen, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gruendl, R. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gschwend, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gutierrez, G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Honscheid, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

James, D. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kuehn, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kuhlmann, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kuropatkin, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lahav, O.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lima, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Maia, M. A. G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

March, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Marshall, J. L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

McMahon, R. G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Menanteau, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Miquel, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nord, B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Plazas, A. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sanchez, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Scarpine, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schindler, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schubnell, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sevilla-Noarbe, I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Smith, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Soares-Santos, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sobreira, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suchyta, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tarle, G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tucker, D. L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Walker, A. R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wester, W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2018A&A...609A..71C
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Citation

Courbin, F., Bonvin, V., Buckley-Geer, E., Fassnacht, C. D., Frieman, J., Lin, H., et al. (2018). COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. XVI. Time delays for the quadruply imaged quasar DES J0408-5354 with high-cadence photometric monitoring. Astronomy and Astrophysics, 609.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CE36-7

Abstract

We present time-delay measurements for the new quadruple imaged quasar DES J0408-5354, 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 J0408-5354: ∆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) = -155.5 ± 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. Lightcurves are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/609/A71">http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/609/A71</A>