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Table 1

Measured longitudinal magnetic field, activity indicators, radial velocity, and their uncertainties for β Ceti.

Date Rot. S/N B l σ RV
Inst. UT HJD phase (LSD) CaII K σ Hα σ CaII IR σ [G] [G] [km s-1]
E 20 Jun. 10 2 455 368.123 0.891 73 412 0.191 0.005 0.211 0.002 0.134 0.003 4.4 0.4 13.36
E 22 Jun. 10 2 455 370.134 0.901 63 268 0.194 0.004 0.214 0.001 0.135 0.003 3.9 0.4 13.36
E 17 Jul. 10 2 455 395.140 0.017 78 329 0.210 0.004 0.220 0.001 0.141 0.001 7.4 0.3 13.36
E 18 Jul. 10 2 455 396.132 0.022 64 598 0.216 0.005 0.217 0.001 0.144 0.002 8.1 0.4 13.38
E 26 Jul. 10 2 455 404.138 0.059 30 276 0.207 0.012 0.215 0.001 0.146 0.000 8.2 0.9 13.47
E 05 Aug. 10 2 455 414.006 0.105 64 982 0.218 0.005 0.213 0.001 0.147 0.001 7.2 0.4 13.45
N 07 Aug. 10 2 455 415.633 0.112 50 740 0.197 0.007 0.211 0.002 0.149 0.001 7.0 0.5 13.44
N 17 Aug. 10 2 455 425.685 0.159 59 498 0.201 0.004 0.221 0.002 0.148 0.003 4.5 0.5 13.43
N 03 Sep. 10 2 455 442.699 0.238 55 431 0.189 0.007 0.218 0.001 0.147 0.001 2.8 0.4 13.36
N 19 Sep. 10 2 455 459.473 0.316 69 382 0.187 0.005 0.211 0.002 0.142 0.001 1.2 0.4 13.36
N 26 Sep. 10 2 455 466.500 0.349 70 223 0.198 0.006 0.215 0.001 0.147 0.002 0.1 0.4 13.35
N 06 Oct. 10 2 455 475.518 0.391 40 356 0.212 0.007 0.215 0.002 0.155 0.002 1.8 0.7 13.43
N 13 Oct. 10 2 455 483.475 0.428 72 465 0.230 0.005 0.213 0.001 0.165 0.001 3.6 0.4 13.44
E 16 Oct. 10 2 455 485.832 0.439 65 746 0.216 0.003 0.223 0.002 0.155 0.002 3.9 0.4 13.43
E 17 Oct. 10 2 455 486.863 0.444 68 396 0.222 0.006 0.217 0.001 0.154 0.001 3.8 0.3 13.42
N 20 Oct. 10 2 455 490.471 0.460 31 993 0.211 0.016 0.213 0.001 0.158 0.001 5.1 0.8 13.46
N 12 Nov. 10 2 455 513.360 0.567 37 268 0.199 0.004 0.212 0.002 0.149 0.004 4.9 0.7 13.40
E 16 Nov. 10 2 455 516.831 0.583 61 599 0.202 0.003 0.222 0.002 0.142 0.003 4.0 0.4 13.35
E 21 Nov. 10 2 455 521.798 0.606 59 370 0.197 0.007 0.212 0.002 0.137 0.001 4.2 0.5 13.31
E 22 Nov. 10 2 455 522.718 0.610 73 414 0.195 0.006 0.212 0.004 0.137 0.004 3.9 0.4 13.34
N 26 Nov. 10 2 455 527.368 0.632 61 161 0.185 0.004 0.212 0.001 0.136 0.003 4.5 0.4 13.26
E 28 Nov. 10 2 455 528.855 0.639 65 837 0.196 0.006 0.212 0.002 0.137 0.002 3.9 0.4 13.32
N 04 Dec. 10 2 455 535.349 0.669 41 811 0.175 0.009 0.207 0.001 0.138 0.003 4.8 0.6 13.35
N 12 Dec. 10 2 455 543.383 0.706 29 688 0.175 0.010 0.211 0.001 0.139 0.002 5.0 0.8 13.32
N 14 Dec. 10 2 455 545.292 0.715 22 465 0.167 0.013 0.208 0.002 0.147 0.003 5.3 1.1 13.24
E 19 Jun. 11 2 455 732.097 0.584 29 427 0.211 0.016 0.204 0.003 0.136 0.004 4.3 0.8 13.41
E 22 Jun. 11 2 455 735.130 0.598 74 032 0.213 0.007 0.205 0.002 0.135 0.003 4.1 0.4 13.41
E 08 Jul. 11 2 455 751.132 0.673 41 771 0.227 0.010 0.208 0.001 0.145 0.004 4.7 0.6 13.42
E 13 Jul. 11 2 455 756.134 0.696 52 216 0.225 0.009 0.208 0.003 0.145 0.005 4.2 0.5 13.35
E 15 Jul. 11 2 455 758.138 0.705 62 607 0.226 0.007 0.214 0.003 0.145 0.005 4.6 0.4 13.39
N 25 Sep. 11 2 455 829.535 0.037 50 501 0.205 0.005 0.222 0.002 0.157 0.002 6.7 0.5 13.39
N 10 Oct. 11 2 455 845.407 0.111 47 385 0.206 0.008 0.223 0.002 0.151 0.002 6.0 0.6 13.38
E 30 Oct. 11 2 455 865.444 0.204 54 215 0.183 0.006 0.208 0.005 0.141 0.002 3.7 0.5 13.38
N 16 Nov. 11 2 455 882.425 0.283 55 492 0.180 0.009 0.211 0.004 0.143 0.005 4.3 0.4 13.34
N 27 Nov. 11 2 455 893.309 0.334 60 720 0.191 0.006 0.216 0.006 0.147 0.005 2.7 0.4 13.35
N 08 Dec. 11 2 455 904.316 0.385 60 838 0.203 0.006 0.216 0.002 0.154 0.005 1.3 0.4 13.35
N 09 Jan. 12 2 455 936.252 0.534 49 042 0.209 0.005 0.216 0.002 0.159 0.005 4.0 0.5 13.25
N 22 Jan. 12 2 455 949.279 0.594 61 673 0.184 0.004 0.213 0.001 0.145 0.003 5.2 0.4 13.32

Notes. In the first column capital letters N and E stand for Narval (TBL, Pic du Midi, France) and ESPaDOnS (CFHT), respectively. The fifth column gives the signal-to-noise ratio (S/N) of each Stokes V LSD profile.

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