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. Author manuscript; available in PMC: 2017 Feb 22.
Published in final edited form as: Nature. 2016 May 12;533(7602):221–224. doi: 10.1038/nature17448

Extended Data Table 1. TRAPPIST-1 transit light curves.

For each light curve, the instrument, filter, number of points Np, exposure time Texp, and baseline function are given. For the baseline functions, p(ǫ2 denotes, respectively, a 2nd-order polynomial function of time (ǫ = t), x and y positions (ǫ = xy), and full-width at half-maximum of the stellar images (ǫ = f).

Date Instrument Filter Np Texp Baseline function Transit(s)
17 Sep 2015 TRAPPIST I+z 163 55s p(t2+xy2+f2) TRAPPIST-1c
29 Sep 2015 TRAPPIST I+z 232 55s p(t2+xy2+f2) TRAPPIST-1d
27 Oct 2015 TRAPPIST I+z 84 55s p(t2+xy2+f2) TRAPPIST-1b
30 Oct 2015 TRAPPIST I+z 77 55s p(t2+xy2+f2) TRAPPIST-1b
05 Nov 2015 TRAPPIST I+z 237 55s p(t2+xy2+f2) TRAPPIST-1b
07 Nov 2015 TRAPPIST I+z 241 55s p(t2+xy2+f2) TRAPPIST-1c
08 Nov 2015 TRAPPIST I+z 231 55s p(t2+xy2+f2) TRAPPIST-1b
VLT/HAWK-I NB2090 207 17x1.7s p(t2+xy2+f2) TRAPPIST-1b
11 Nov 2015 TRAPPIST I+z 140 55s p(t2+xy2+f2) TRAPPIST-1b
14 Nov 2015 TRAPPIST I+z 241 55s p(t2+xy2+f2) TRAPPIST-1b
18 Nov 2015 HCT/HFOSC I 103 20s p(t2+xy2+f2) TRAPPIST-1b
05 Dec 2015 UKIRT J 1312 3x2s p(t2+xy2+f2) TRAPPIST-1b
06 Dec 2015 UKIRT J 1175 5x1s p(t2+xy2+f2) TRAPPIST-1c
08 Dec 2015 UKIRT J 1109 5x1s p(t2+xy2+f2) TRAPPIST-1b
11 Dec 2015 TRAPPIST I+z 158 55s p(t2+xy2+f2) TRAPPIST-1c + d
28 Dec 2015 TRAPPIST I+z 94 55s p(t2+xy2+f2) TRAPPIST-1c (partial)