TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope

Research output: Contribution to journal › Journal article › Research › peer-review

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TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope. / Millon, M.; Courbin, F.; Bonvin, A; Buckley-Geer, E.; Fassnacht, C. D.; Frieman, J.; Marshall, P. J.; Suyu, S. H.; Treu, T.; Anguita, T.; Motta, Francis; Agnello, A.; Chan, J. H. H.; Chao, D. C-Y; Chijani, M.; Gilman, D.; Gilmore, K.; Lemon, C.; Lucey, J. R.; Melo, A.; Paic, E.; Rojas, K.; Sluse, D.; Williams, P. R.; Hempel, A.; Kim, S.; Lachaume, R.; Rabus, M.

In: Astronomy & Astrophysics, Vol. 642, A193, 20.10.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Millon, M, Courbin, F, Bonvin, A, Buckley-Geer, E, Fassnacht, CD, Frieman, J, Marshall, PJ, Suyu, SH, Treu, T, Anguita, T, Motta, F, Agnello, A, Chan, JHH, Chao, DC-Y, Chijani, M, Gilman, D, Gilmore, K, Lemon, C, Lucey, JR, Melo, A, Paic, E, Rojas, K, Sluse, D, Williams, PR, Hempel, A, Kim, S, Lachaume, R & Rabus, M 2020, 'TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope', Astronomy & Astrophysics, vol. 642, A193. https://doi.org/10.1051/0004-6361/202038698

APA

Millon, M., Courbin, F., Bonvin, A., Buckley-Geer, E., Fassnacht, C. D., Frieman, J., Marshall, P. J., Suyu, S. H., Treu, T., Anguita, T., Motta, F., Agnello, A., Chan, J. H. H., Chao, D. C-Y., Chijani, M., Gilman, D., Gilmore, K., Lemon, C., Lucey, J. R., ... Rabus, M. (2020). TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope. Astronomy & Astrophysics, 642, [A193]. https://doi.org/10.1051/0004-6361/202038698

Vancouver

Millon M, Courbin F, Bonvin A, Buckley-Geer E, Fassnacht CD, Frieman J et al. TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope. Astronomy & Astrophysics. 2020 Oct 20;642. A193. https://doi.org/10.1051/0004-6361/202038698

Author

Millon, M. ; Courbin, F. ; Bonvin, A ; Buckley-Geer, E. ; Fassnacht, C. D. ; Frieman, J. ; Marshall, P. J. ; Suyu, S. H. ; Treu, T. ; Anguita, T. ; Motta, Francis ; Agnello, A. ; Chan, J. H. H. ; Chao, D. C-Y ; Chijani, M. ; Gilman, D. ; Gilmore, K. ; Lemon, C. ; Lucey, J. R. ; Melo, A. ; Paic, E. ; Rojas, K. ; Sluse, D. ; Williams, P. R. ; Hempel, A. ; Kim, S. ; Lachaume, R. ; Rabus, M. / TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope. In: Astronomy & Astrophysics. 2020 ; Vol. 642.

Bibtex

@article{3618d624e4114f13a42126c913f31ddb,
title = "TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope",
abstract = "We present six new time-delay measurements obtained from Rc-band monitoring data acquired at the Max Planck Institute for Astrophysics (MPIA) 2.2m telescope at La Silla observatory between October 2016 and February 2020. The lensed quasars HE0047 1756, WG0214 2105, DES 0407 5006, 2M1134 2103, PSJ 1606 2333, and DES 2325 5229 were observed almost daily at high signal-to-noise ratio to obtain highquality light curves where we can record fast and small-amplitude variations of the quasars. We measured time delays between all pairs of multiple images with only one or two seasons of monitoring with the exception of the time delays relative to image D of PSJ 1606 2333. The most precise estimate was obtained for the delay between image A and image B of DES 0407 5006, where tau AB = 128:4+(3:5) (3:8) d (2.8% precision) including systematics due to extrinsic variability in the light curves. For HE0047 1756, we combined our high-cadence data with measurements from decade-long light curves from previous COSMOGRAIL campaigns, and reach a precision of 0.9 d on the final measurement. The present work demonstrates the feasibility of measuring time delays in lensed quasars in only one or two seasons, provided high signal-to-noise ratio data are obtained at a cadence close to daily.",
keywords = "gravitational lensing: strong, methods: data analysis, cosmological parameters, COSMOGRAIL, H-0, PRECISION, DISCOVERY, GAIA",
author = "M. Millon and F. Courbin and A Bonvin and E. Buckley-Geer and Fassnacht, {C. D.} and J. Frieman and Marshall, {P. J.} and Suyu, {S. H.} and T. Treu and T. Anguita and Francis Motta and A. Agnello and Chan, {J. H. H.} and Chao, {D. C-Y} and M. Chijani and D. Gilman and K. Gilmore and C. Lemon and Lucey, {J. R.} and A. Melo and E. Paic and K. Rojas and D. Sluse and Williams, {P. R.} and A. Hempel and S. Kim and R. Lachaume and M. Rabus",
year = "2020",
month = oct,
day = "20",
doi = "10.1051/0004-6361/202038698",
language = "English",
volume = "642",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "E D P Sciences",

}

RIS

TY - JOUR

T1 - TDCOSMO II. Six new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope

AU - Millon, M.

AU - Courbin, F.

AU - Bonvin, A

AU - Buckley-Geer, E.

AU - Fassnacht, C. D.

AU - Frieman, J.

AU - Marshall, P. J.

AU - Suyu, S. H.

AU - Treu, T.

AU - Anguita, T.

AU - Motta, Francis

AU - Agnello, A.

AU - Chan, J. H. H.

AU - Chao, D. C-Y

AU - Chijani, M.

AU - Gilman, D.

AU - Gilmore, K.

AU - Lemon, C.

AU - Lucey, J. R.

AU - Melo, A.

AU - Paic, E.

AU - Rojas, K.

AU - Sluse, D.

AU - Williams, P. R.

AU - Hempel, A.

AU - Kim, S.

AU - Lachaume, R.

AU - Rabus, M.

PY - 2020/10/20

Y1 - 2020/10/20

N2 - We present six new time-delay measurements obtained from Rc-band monitoring data acquired at the Max Planck Institute for Astrophysics (MPIA) 2.2m telescope at La Silla observatory between October 2016 and February 2020. The lensed quasars HE0047 1756, WG0214 2105, DES 0407 5006, 2M1134 2103, PSJ 1606 2333, and DES 2325 5229 were observed almost daily at high signal-to-noise ratio to obtain highquality light curves where we can record fast and small-amplitude variations of the quasars. We measured time delays between all pairs of multiple images with only one or two seasons of monitoring with the exception of the time delays relative to image D of PSJ 1606 2333. The most precise estimate was obtained for the delay between image A and image B of DES 0407 5006, where tau AB = 128:4+(3:5) (3:8) d (2.8% precision) including systematics due to extrinsic variability in the light curves. For HE0047 1756, we combined our high-cadence data with measurements from decade-long light curves from previous COSMOGRAIL campaigns, and reach a precision of 0.9 d on the final measurement. The present work demonstrates the feasibility of measuring time delays in lensed quasars in only one or two seasons, provided high signal-to-noise ratio data are obtained at a cadence close to daily.

AB - We present six new time-delay measurements obtained from Rc-band monitoring data acquired at the Max Planck Institute for Astrophysics (MPIA) 2.2m telescope at La Silla observatory between October 2016 and February 2020. The lensed quasars HE0047 1756, WG0214 2105, DES 0407 5006, 2M1134 2103, PSJ 1606 2333, and DES 2325 5229 were observed almost daily at high signal-to-noise ratio to obtain highquality light curves where we can record fast and small-amplitude variations of the quasars. We measured time delays between all pairs of multiple images with only one or two seasons of monitoring with the exception of the time delays relative to image D of PSJ 1606 2333. The most precise estimate was obtained for the delay between image A and image B of DES 0407 5006, where tau AB = 128:4+(3:5) (3:8) d (2.8% precision) including systematics due to extrinsic variability in the light curves. For HE0047 1756, we combined our high-cadence data with measurements from decade-long light curves from previous COSMOGRAIL campaigns, and reach a precision of 0.9 d on the final measurement. The present work demonstrates the feasibility of measuring time delays in lensed quasars in only one or two seasons, provided high signal-to-noise ratio data are obtained at a cadence close to daily.

KW - gravitational lensing: strong

KW - methods: data analysis

KW - cosmological parameters

KW - COSMOGRAIL

KW - H-0

KW - PRECISION

KW - DISCOVERY

KW - GAIA

U2 - 10.1051/0004-6361/202038698

DO - 10.1051/0004-6361/202038698

M3 - Journal article

VL - 642

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - A193

ER -

ID: 252297387