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Table 1

The basic data of the target stars and the results of the time series analysis.

Renson BD/Tycho V Speca T eff σ T eff b E(B − V) JD(start)c Δt ULd
[mag] [K] [K] [mag] [min] [mmag]

1860 +32 213 9.076 A5 Sr Cr Eu 7920 160 (3) 0.02 800.5045 190.7 1.1
801.6294 31.0 4.5
45690 +28 2829 8.992 A7 Eu Cr Sr 7610 180 (5) 0.10 796.2976 132.6 2.0
804.2640 65.2 3.6
47048 +31 3215 9.573 A Sr 8760 120 (4) 0.11 800.2868 133.4 2.4
801.2747 93.5 1.0
49240 +29 3427 9.676 A6 Cr Sr 8820 180 (4) 0.12 792.3666 92.7 1.2
49390 +29 3448 9.529 A9 Sr 7980 210 (3) 0.11 793.2910 123.0 2.0
802.2768 65.2 2.6
51470 +34 3688 9.061 A5 Sr 8290 60 (4) 0.12 795.2967 130.9 1.6
52870 +39 4014 10.101 A2 Sr 8560 440 (4) 0.11 798.3517 131.2 1.3
801.3686 130.5 1.2
53610 +36 3941 9.072 A7- Sr 7690 140 (3) 0.10 800.4331 67.3 2.3
55060 +21 4333 9.907 A2 Sr 8480 150 (3) 0.09 794.4382 125.9 2.5
55697 +33 4115 10.571 A7 Si Sr 8050 360 (3) 0.12 796.4467 119.8 2.9
55850 +37 4152 10.110 F0 Si Sr 7330 360 (3) 0.02 795.4371 129.1 3.2
804.4079 65.2 1.3
56141e 2713-2426-1 11.619 A2 Si 6270 30 (2) 0.17 797.4572 130.8 2.6
56261 +35 4422 9.435 A5 Si 7830 130 (3) 0.02 799.4577 120.0 1.5
56543 +41 4078 9.377 A5 Si Cr 8110 180 (3) 0.10 793.4555 121.4 1.5
58275 +46 3543 9.728 A2 Si 8660 340 (3) 0.08 795.5449 130.7 1.4
58773 +54 2730 10.488 F0 Si Sr 7710 240 (3) 0.06 796.5473 125.4 1.6
58777 3982-4172-1 10.737 A3 Sr 7930 410 (3) 0.19 793.5602 112.4 3.0
59825 +57 2636 9.532 A Sr Cr Eu 7720 200 (3) 0.13 797.5622 108.8 2.0
802.5654 94.3 2.3
61344 +50 4176 9.435 A2 Sr Eu 8510 120 (3) 0.13 799.5697 109.3 1.8
801.5232 65.1 1.5
61420 +61 2565 9.940 A8 Sr Eu Cr 7270 290 (4) 0.09 798.5415 115.3 1.8

Notes. 

(b)

The number of temperature calibrations used are given in parenthesis.

(c)

JD−2 455 000.

(d)

Upper limit in Fig. 2.

(e)

See discussion in Sect. 3.

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