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Table 1

HD 113337 VEGA observation and reduction log.

Date Calibrator UT Calibration λobs Baseline BP PA V2 r0
(HD) (mas) (mas) (on target) sequence (nm) (m) (°) (cm)
2013-05-25 111270 (C1) 0.307 0.021 04:35 C1-S-C1 730 E2W1 250 −131 0.321 ± 0.040 9
110462 (C2) 0.221 0.014 710 E2W1 250 −131.5 0.357 ± 0.046
06:23 C1-S-C2 750 E2W1 249 −100 0.420 ± 0.048
730 E2W1 249 −100 0.323 ± 0.032
710 E1E2 64 −121 0.818 ± 0.052
710 E2W1 249 −100 0.362 ± 0.042

2014-07-03 98772 0.230 0.014 04:32 C-S-C 710 E2W2 156 −176 0.780 ± 0.058 8
700 E2W2 156 −176 0.708 ± 0.053

2014-07-07 98772 0.230 0.014 04:17 C-S-C 710 E2W2 156 174 0.650 ± 0.051 6
700 E2W2 156 174 0.648 ± 0.052

2015-05-30 118214 0.230 0.015 06:01 C-S-C 710 E2W2 156 −141 0.712 ± 0.023 7
700 E2W2 156 −141 0.658 ± 0.020

2015-06-01 121409 0.226 0.015 06:02 C-S-C 710 E1E2 66 −151 0.914 ± 0.018 10
710 E2W1 245 −130 0.510 ± 0.070
700 E1E2 66 −151 0.902 ± 0.017
06:45 C-S-C 710 E1E2 66 −148 0.940 ± 0.018
700 E1E2 66 −148 0.918 ± 0.017

Notes. Only the selected V2 measurements (see text) are listed. Columns 1 and 5 give the observation date and UT time (on the science target). Columns 2–4 give the calibrator identifier in the HD catalogue, its uniform-disc angular diameter () in the R band, and the 1σ error bar on the calibrator diameter (). We took the calibrator diameters from the JMMC Stellar Diameters Catalog Version 2 (JSDC; Bourges et al. 2017), while we kept the corresponding 1σ uncertainties from the JSDC Version 1 (Lafrasse et al. 2010, see text). Column 6 gives the calibration sequence followed for the observation and Col. 8 is the baseline used. Column 7 gives the central wavelength of the 20-nm-wide spectral bands in which we computed the V2. Columns 9 and 10 give the projected base length BP and its orientation PA. Column 11 gives the corresponding calibrated V2 value. Column 12 gives the Fried parameter (estimation of the quality of the atmosphere) for each observation night. We note that three observation points are not listed as the results were fully rejected (see text).

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