J/A+A/629/A97 Quadruply lensed quasar WFI2033-4723 light curves (Bonvin+, 2019)
COSMOGRAIL XVIII: time delays of the quadruply lensed quasar WFI2033-4723.
Bonvin V., Millon M., Chan J.H.H., Courbin F., Rusu C.E., Sluse D.,
Suyu S.H., Wong K.C., Fassnacht C.D., Marshall P.J., Treu T.,
Buckley-Geer E., Frieman J., Hempel A., Kim S., Lachaume R., Rabus M.,
Chao D.C.-Y., Chijani M., Gilman D., Gilmore K., Rojas K., Williams P.,
Anguita T., Kochanek C.S., Morgan C., Motta V., Tewes M., Meylan G.
<Astron. Astrophys. 629, A97 (2019)>
=2019A&A...629A..97B 2019A&A...629A..97B (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; Gravitational lensing ; Photometry
Keywords: gravitational lensing: strong - galaxies: individual: WFI2033-4723 -
cosmological parameters
Abstract:
We present new measurements of the time delays of WFI2033-4723. The
data sets used in this work include 14 years of data taken at the 1.2m
Leonhard Euler Swiss telescope, 13 years of data from the SMARTS 1.3m
telescope at Las Campanas Observatory and a single year of
high-cadence and high-precision monitoring at the MPIA 2.2m telescope.
The time delays measured from these different data sets, all taken in
the R-band, are in good agreement with each other and with previous
measurements from the literature. Combining all the time-delay
estimates from our data sets results in DtAB=36.2-0.8+0.7days
(2.1% precision), DtAC=-23.3-1.4+1.2days (5.6%) and
DtBC=-59.4-1.3+1.3days (2.2%). In addition, the close image pair
A1-A2 of the lensed quasars can be resolved in the MPIA 2.2m data. We
measure a time delay consistent with zero in this pair of images. We
also explore the prior distributions of microlensing time-delay
potentially affecting the cosmological time-delay measurements of
WFI2033-4723. There is however no strong indication in our
measurements that microlensing time delay is neither present nor
absent. This work is part of a H0LiCOW series focusing on measuring
the Hubble constant from WFI2033-4723.
Description:
R-band light curves of the quadruply lensed quasar WFI2033-4723. The
observing logs are available on Table 1 of the paper.
C2 data, taken between Oct 2004 and Sep 2010, bi-weekly cadence ECAM
data, taken between Oct 2010 and May 2018, bi-weekly cadence SMARTS
data, taken between Apr 2004 and Nov 2016, bi-weekly cadence WFI data,
taken between Mar 2017 and Dec 2017, daily cadence
Objects:
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RA (2000) DE Designation(s)
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20 33 42.12 -47 23 43.9 WFI2033-4723 = [MCS2004b] WFI J2033-4723
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 81 4 Summary of the optical monitoring campaigns of
WFI2033-4723
c2.dat 65 294 EULER-C2 R-band light curves
ecam.dat 65 350 EULER-ECAM R-band light curves
smarts.dat 65 345 SMARTS-ANDICAM R-band light curves
wfi.dat 83 157 2.2m-WFI R-band light curves
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See also:
J/A+A/488/481 : Time delays and H0 from WFI J2033-4723 (Vuissoz+, 2008)
J/A+A/536/A53 : R-band light curves of HE 0435-1223 (Courbin+, 2011)
J/A+A/553/A121 : 2 lensed quasars light curves (Eulaers+, 2013)
J/A+A/556/A22 : R-band light curves of RX J1131-1231 (Tewes+, 2013)
J/A+A/557/A44 : Doubly lensed quasar SDSS J1001+5027 (Rathna Kumar+, 2013)
J/MNRAS/445/2677 : Peculiar velocities in 6dFGS (Springob+, 2014)
J/A+A/584/A26 : Cosmography of OB stars in solar neighbourhood (Bouy+, 2015)
J/MNRAS/465/4914 : R-band light curves of HE 0435-1223 (Bonvin+, 2017)
J/A+A/609/A71 : R-band light curves of DES J0408-5359 (Courbin+ 2018)
J/A+A/616/A183 : R-band light curves of PG 1115+080 (Bonvin+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Tel Telescope-Instrument
16- 19 F4.1 arcmin FoV1 Field of view
20 A1 --- --- [x]
21- 24 F4.1 arcmin FoV2 Field of view
26- 30 F5.3 arcsec Pix Pixel value
32- 39 A8 "MMM/YYYY" Obs.start Starting period of observation
40 A1 --- --- [-]
41- 48 A8 "MMM/YYYY" Obs.end Ending period of observation
50- 52 I3 --- Nobs Number of epochs (1)
54- 58 A5 s ExpTime Exposure time (1)
60- 63 F4.2 arcsec Seeing Median seeing (1)
65- 68 F4.2 --- Airmass Airmass (1)
70 I1 d Sampling Targeted cadence, not counting the
seasonal gaps
72- 81 A10 --- FileName Name of the table with light curves
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Note (1): The number of epochs, median seeing, airmass and total exposure time
are computed from the epochs used in the light curves presented in Fig. 2,
which discard ∼13% of the total number of exposures for each data set
(mostly due to bad weather or scheduling conflicts). The distribution in
seeing and airmass of each data set is shown in the bottom-right panel
of Fig. 2.
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Byte-by-byte Description of file: c2.dat ecam.dat smarts.dat
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Bytes Format Units Label Explanations
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1- 11 F11.5 d MHJD Median Heliocentric Julian Date (HJD-2400000)
13- 21 F9.5 mag magA Relative magnitude of image A
23- 29 F7.5 mag e_magA Relative magnitude error of image A
31- 39 F9.5 mag magB Relative magnitude of image B
41- 47 F7.5 mag e_magB Relative magnitude error of image B
49- 57 F9.5 mag magC Relative magnitude of image C
59- 65 F7.5 mag e_magC Relative magnitude error of image C
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Byte-by-byte Description of file: wfi.dat
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Bytes Format Units Label Explanations
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1- 11 F11.5 d MHJD Median Heliocentric Julian date (HJD-2400000)
13- 21 F9.5 mag magA1 Relative magnitude of image A1
23- 29 F7.5 mag e_magA1 Relative magnitude error of image A1
31- 39 F9.5 mag magA2 Relative magnitude of image A2
41- 47 F7.5 mag e_magA2 Relative magnitude error of image A2
49- 57 F9.5 mag magB Relative magnitude of image B
59- 65 F7.5 mag e_magB Relative magnitude error of image B
67- 75 F9.5 mag magC Relative magnitude of image C
77- 83 F7.5 mag e_magC Relative magnitude error of image C
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Acknowledgements:
Vivien Bonvon, vivien.bonvin(at)epfl.ch
References:
Eigenbrod et al., Paper I 2005A&A...436...25E 2005A&A...436...25E
Eigenbrod et al., Paper II 2006A&A...451..747E 2006A&A...451..747E
Eigenbrod et al., Paper III 2006A&A...451..759E 2006A&A...451..759E
Sama et al., Paper IV 2006A&A...450..461S 2006A&A...450..461S
Vuissoz et al., Paper V 2007A&A...464..845V 2007A&A...464..845V
Eigenbrod et al., Paper VI 2007A&A...465...51E 2007A&A...465...51E
Vuissoz et al., Paper VII 2008A&A...488..481V 2008A&A...488..481V, Cat. J/A+A/488/481
Chantry et al., Paper VIII 2010A&A...522A..95C 2010A&A...522A..95C
Courbin et al., Paper IX 2011A&A...536A..53C 2011A&A...536A..53C, Cat. J/A+A/536/A53
Sluse et al., Paper X 2012A&A...538A..99S 2012A&A...538A..99S
Tewes et al., Paper XI 2013A&A...553A.120T 2013A&A...553A.120T
Eulaers et al., Paper XII 2013A&A...553A.121E 2013A&A...553A.121E, Cat. J/A+A/553/A121
Tewes et al., Paper XIII 2013A&A...556A..22T 2013A&A...556A..22T, Cat. J/A+A/556/A22
Rathna Kumar et al., Paper XIV 2013A&A...557A..44R 2013A&A...557A..44R, Cat. J/A+A/557/A44
Bonvin et al., Paper XV 2016A&A...585A..88B 2016A&A...585A..88B
Courbin et al., Paper XVI 2018A&A...609A..71C 2018A&A...609A..71C, Cat. J/A+A/609/A71
Bonvin et al., Paper XVII 2018A&A...616A.183B 2018A&A...616A.183B, Cat. J/A+A/616/A183
(End) Vivien Bonvin [EPFL, Switzerland], Patricia Vannier [CDS] 05-Aug-2019