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Table 2

Observing log of our interferometric observations.

Date Mean MJD Instrument Stations Nr. Obs. λ(μm) δλ (μm) Calibratorsa

2001 May 8 52 037.5 PTI NW 8 1.65 0.05 HD 166014, HD 168914
2001 Jun. 6 52 066.4 PTI NW 5 1.65 0.05 HD 166014, HD 168914
2001 Jun. 23 52 083.3 PTI NS 7 2.1 0.1 HD 166014, HD 168914
2001 Jul. 2,15 52 098.5 PTI NW 7 1.65 0.05 HD 166014, HD 168914
2001 Jul. 28 52 118.2 PTI NW 2 2.1 0.1 HD 166014, HD 168914
2001 Aug. 2, 6, 10, 11, 18 52 132. PTI NS 27 1.65 0.05 HD 166014, HD 168914
2003 Jun. 10 52 800.3 PTI NS 7 1.65 0.05 HD 166014, HD 168914
2003 Jun. 15, 16 52 805.8 IOTA N35-C10-S15 23 1.65 0.25 HD 166014, HD 168914
2007 Apr. 13 54 203.38 AMBER E0-G0-H0 1 1.50–2.50 0.03 HD 165524
2008 Mar. 31 54 556.39 AMBER E0-G0-H0 1 1.50–2.50 0.03 HD 165524
2011 Jun. 8 55 720.5 VEGA S1-S2 1 0.672 0.015 HD 168914
2011 Aug. 24 55 797.5 VEGA E1-E2 1 0.672 0.015 HD 168914
2011 Oct. 9 55 844.16 NPOI AC0-AE0 7 0.56–0.85 0.025 HR6787
2011 Oct. 9 55 844.16 NPOI AE0-AW0 7 0.56–0.85 0.025 HR6787
2012 May 1 56 048.43 CLASSIC S1-S2 4 2.13 0.3 HD 162828, HD 163948, HD 164730
2012 May 1 56 048.48 CLASSIC S1-S2 2 1.65 0.2 HD 161239, HD 164730
2012 Jun. 27 56 105.15 AMBER A1-C1-D0 1 1.50–2.50 0.03 HD 165524
2012 July 3 56 111.46 CLIMB S2-E2-W2 1 2.13 0.3 HD 166230
2012 July 4 56 112.41 CLIMB S1-E2-W2 2 2.13 0.3 HD 166230, HD 168914
2012 July 7 56 115.43 CLIMB S1-E2-W1 2 1.65 0.2 HD 166230, HD 168914

Notes..

(a)

Calibrator UD diameters (mas): HD 166014 = 0.58 ± 0.03, HD 168914(R) = 0.45 ± 0.03, HD 168914(HK) = 0.46 ± 0.03, HD 165524 = 1.11 ± 0.02 (Mérand et al. 2005), HR6787 = 0.34 ± 0.02, HD 162828 = 0.72 ± 0.05, HD 161239 = 0.62 ± 0.04, HD 163948 = 0.52 ± 0.03, HD 164730 = 0.75 ± 0.05, HD 166230 = 0.41 ± 0.03

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