Table 1
Presentation of all the Spitzer data of GJ 436 used in this paper.
| Bandpass | Eclipse | Programme | AOR | Aperture | Background | PSF centre | Baseline | β w | β r | T β r | Average | |
| nature | ID | radius | contribution | x | y | model | total flux | |||||
| (μm) | (pixels) | (%) | (pixels) | (pixels) | (min) | (mJy) | ||||||
|
|
||||||||||||
| 3.6 | Occultation | 40685 | 24882688 | 1.9 | 0.04 | 15.67 | 15.97 | p([xy] |
0.95 | 1.24 | 15 | 1269.7 ± 2.3 |
| 3.6 | Transit | 50051 | 28894208 | 2.4 | 0.05 | 16.41 | 15.85 | p([xy]1) | 1.00 | 1.60 | 60 | 1254.0 ± 1.7 |
| 3.6 | Transit | 50051 | 28894464 | 3.0 | 0.12 | 16.11 | 16.11 | p([xy] |
0.97 | 1.00 | 5 | 1269.9 ± 2.2 |
| 3.6 | N/A | 60003 | 38807296 | 2.5 | 0.29 | 16.84 | 26.49 | p([xy] |
1.25 | 2.87 | 40 | 1253.8 ± 9.9 |
| 3.6 | Occultation | 60003 | 40848384 | 2.2 | 0.01 | 16.27 | 15.77 | p([xy] |
1.12 | 2.88 | 35 | 1274.7 ± 8.2 |
| 4.5 | Occultation | 40685 | 24882944 | 1.9 | 0.07 | 15.74 | 15.95 | p([xy] |
1.04 | 1.84 | 65 | 841.10 ± 3.02 |
| 4.5 | Transit | 50051 | 28894720 | 2.4 | 0.12 | 15.99 | 15.92 | p([xy] |
1.10 | 1.36 | 40 | 848.50 ± 3.07 |
| 4.5 | Transit | 50051 | 28894976 | 2.2 | 0.10 | 15.55 | 15.98 | p([xy] |
1.06 | 1.17 | 25 | 841.91 ± 3.61 |
| 4.5 | N/A | 541 | 38702592 | 2.2 | 0.13 | 15.70 | 15.91 | p([xy] |
1.09 | 1.20 | 120 | 857.20 ± 2.20 |
| 4.5 | N/A | 60003 | 38808064 | 3.5 | 0.21 | 15.92 | 26.36 | p([xy] |
1.04 | 1.42 | 40 | 854.46 ± 2.20 |
| 4.5 | Occultation | 60003 | 40848128 | 2.2 | 0.13 | 15.68 | 16.29 | p([xy] |
1.12 | 1.00 | 5 | 847.55 ± 1.90 |
| 4.5 | N/A | 70084 | 42614016 | 2.4 | 0.14 | 15.70 | 16.01 | p([xy] |
1.21 | 1.06 | 30 | 856.15 ± 1.45 |
| 5.8 | Occultation | 40685 | 24883200 | 2.8 | 0.28 | 15.85 | 15.39 | p([xy]2 + t1) | 1.26 | 1.00 | 5 | 374.57 ± 0.84 |
| 8 | Transit | 30129 | 23515648 | 3.2 | 2.90 | 15.78 | 15.96 | p([xy]1 + l2) | 1.14 | 1.00 | 5 | 207.66 ± 1.29 |
| 8 | Occultation | 30129 | 23618304 | 2.4 | 2.00 | 15.74 | 15.62 | p([xy]1 + l1 + t2) | 1.15 | 1.14 | 60 | 205.31 ± 0.95 |
| 8 | Occultation | 50734 | 26812928 | 2.6 | 0.98 | 16.05 | 15.66 | p([xy] |
1.03 | 1.00 | 5 | 205.44 ± 1.13 |
| 8 | Occultation | 50734 | 27604736 | 3.4 | 1.60 | 15.62 | 15.36 | p([xy]2 + l1) | 1.18 | 1.33 | 45 | 205.81 ± 1.03 |
| 8 | Occultation | 50734 | 27604992 | 3.5 | 1.92 | 16.11 | 15.53 | p(l1) | 1.17 | 1.37 | 15 | 205.58 ± 1.07 |
| 8 | Occultation | 50734 | 27605248 | 3.4 | 1.88 | 15.92 | 15.73 | p([xy]1 + l1) | 1.14 | 1.15 | 20 | 205.48 ± 1.17 |
| 8 | Occultation | 50056 | 27863296 | 4.1 | 5.50 | 15.55 | 15.75 | p([xy]1 + l1 + t2) | 1.30 | 1.07 | 20 | 205.90 ± 1.03 |
| 8 | Transit | 50056 | 27863552 | 4.1 | 5.70 | 15.53 | 15.52 | p([xy] |
1.38 | 1.13 | 5 | 205.94 ± 0.94 |
| 8 | Occultation | 50056 | 27863808 | 4.3 | 6.41 | 15.53 | 15.27 | p([xy]1 + t2) | 1.30 | 1.02 | 5 | 205.99 ± 0.98 |
| 8 | N/A | 50056 | 27864064 | 2.8 | 3.24 | 15.52 | 15.24 | p([xy]2) | 1.15 | 1.00 | 5 | 205.97 ± 1.08 |
| 8 | Transit | 50051 | 28895232 | 2.7 | 2.06 | 15.85 | 15.55 | p([xy]2 + l2 + t1) | 1.16 | 1.00 | 10 | 205.36 ± 1.10 |
| 8 | Occultation | 50734 | 28969472 | 3.5 | 2.87 | 16.18 | 16.37 | p(l1) | 1.23 | 1.02 | 5 | 205.77 ± 1.20 |
| 8 | Occultation | 50734 | 28969728 | 3.3 | 2.38 | 15.75 | 16.01 | p([xy] |
1.29 | 1.00 | 5 | 205.71 ± 1.30 |
| 8 | Occultation | 50734 | 28969984 | 2.5 | 1.56 | 15.93 | 15.69 | p([xy]1 + l1 + t1) | 1.15 | 1.00 | 5 | 205.73 ± 1.22 |
| 8 | Transit | 50051 | 28895488 | 3.0 | 2.00 | 15.52 | 15.80 | p([xy]2 + l1 + t1) | 1.23 | 1.00 | 5 | 205.15 ± 0.99 |
| 8 | Occultation | 50734 | 28970240 | 3.5 | 2.40 | 16.12 | 15.62 | p([xy]1 + l1) | 1.22 | 1.00 | 5 | 205.60 ± 1.14 |
| 16 | Occultation | 40685 | 23799552 | – | – | 21.99 | 27.89 | p([xy]2 + l2 + t3) | 1.86 | 1.00 | 5 | 85.99 ± 0.31 |
| 24 | Occultation | 40685 | 23799296 | – | – | – | – | – | 3.09 | 1.13 | 5 | 37.33 ± 0.40 |
| 23798784 | – | – | – | – | – | – | ||||||
| 23800320 | – | – | – | – | – | – | ||||||
| 23801856 | – | – | – | – | – | – | ||||||
| 23801600 | – | – | – | – | – | – | ||||||
| 23801344 | – | – | – | – | – | – | ||||||
Notes. Data are classified in ascending order of the bandpass wavelength and observing date. The first column gives the bandpass transmission centre of the instrument/channel, the second the eclipse nature of the event, the third the programme ID, and its corresponding astronomical observation request (AOR) number in Col. 4. The content of the following columns results from our analysis and is mainly linked to the data analysed with aperture photometry. Column 5 provides the chosen aperture photometry radii. In Col. 6 the “background contribution” indicates the relative sky background contribution in the chosen aperture photometry. Columns 7 and 8 give the horizontal and vertical average coordinates of the point-spread function (PSF) centre in fractional pixel units, considering the bottom left corner to have (0,0) for coordinates. The centre is computed by fitting a 2D elliptical Gaussian for the bandpass ranging from 3.6 to 8 μm. Otherwise, it is done during the deconvolution process. Note that we do not give the PSF centre at 24 μm since there are 14 different locations and that they do not depend on the AOR. Each of the following columns respectively gives the baseline function selected for our global modelling (see Sect. 3.3), the βw and βr errors rescaling factors, the time interval used to compute βr, and the average total flux of the system. For the baseline function, p(ϵN) respectively denotes a N-order polynomial function of the time (ϵ = t), of the logarithm of time (ϵ = l), and of the PSF x- and y-positions (ϵ =[xy]) and widths (ϵ = wx and ϵ = wy).
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