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Table 4

Summary of follow-up photometry obtained for WASP-68, WASP-73, and WASP-88.

Target Night Telescope Filter N p T exp Baseline function σ σ 120s β w β r CF
(s) (%) (%)

WASP-68 2012 May 16–17 TRAPPIST I + z 1139 8 p(a1+f1+xy1) + o 0.28 0.10 1.03 1.22 1.26
WASP-68 2012 Jul. 06–07 TRAPPIST I + z 1181 8 p(a2+b1+xy2) + o 0.30 0.11 1.21 1.27 1.54
WASP-68 2013 Jul. 02–03 TRAPPIST I + z 1357 8 p(t2+b1+xy1) + o 0.25 0.10 0.88 1.57 1.39
WASP-68 2012 Jul. 06–07 EulerCam I c 412 40 p(t2+f2+b1) 0.10 0.07 1.40 1.00 1.40
WASP-68 2013 Jul. 02–03 EulerCam I c 333 50 p(a1+f1+xy1) 0.10 0.08 1.36 2.15 2.93
WASP-73 2012 Jul. 19–20 TRAPPIST z 476 25 p(t2) 0.22 0.12 1.13 1.08 1.22
WASP-73 2012 Jul. 23–24 TRAPPIST z 640 25 p(a1+f1) + o 0.25 0.14 1.47 1.11 1.63
WASP-73 2012 Jul. 19–20 EulerCam Gunn-r 346 60 p(t2+f2+xy1) 0.10 0.07 1.48 1.54 2.27
WASP-73 2012 Jul. 23–24 EulerCam Gunn-r 352 50 p(a1+xy1) 0.13 0.10 1.61 2.55 4.11
WASP-88 2012 Aug. 27–28 TRAPPIST I + z 867 20 p(a1) + o 0.23 0.11 1.10 1.19 1.31
WASP-88 2013 Jun. 30–Jul. 01 TRAPPIST I + z 837 20 p(t2) + o 0.37 0.21 1.59 1.14 1.82
WASP-88 2012 Aug. 12–13 EulerCam Gunn-r 95 80 p(a1+xy2) 0.08 0.08 1.25 1.00 1.25
WASP-88 2013 Jun. 25–26 EulerCam Gunn-r 246 70 p(a1+f1) 0.09 0.09 1.31 2.33 3.05
WASP-88 2013 Jun. 30-Jul. 01 EulerCam Gunn-r 317 70 p(t2+b1) 0.17 0.17 2.45 1.08 2.65

Notes. For each light curve, this table shows the date of acquisition, the used instrument and filter, the number of data points, the exposure time, the selected baseline function, the standard deviation of the best-fit residuals (unbinned and binned per intervals of 2 min), and the deduced values for βw, βr and CF = βw × βr. For the baseline function, p(ϵN) denotes, respectively, a N-order polynomial function of time (ϵ = t), airmass (ϵ = a), PSF full-width at half maximum (ϵ = f), background (ϵ = b), and x and y positions (ϵ = xy). The symbol o denotes an offset fixed at the time of the meridian flip.

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