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Table A.1

Log of observations of RZ Ari. Individual columns correspond to dates, heliocentric Julian dates (starting from 2 450 000), the total exposure time (number of spectropolarimetric sequences times the exposure time per sequence), Zeeman detection (DD means a definitive detection, MD means a marginal detection, and ND means no detection). N/A means no Zeeman signature examination due to the Fresnel rhomb misalignment, longitudinal magnetic field component, Bl, and its errors in G, Ca S-index, Hα- index, CaIRT-index, and radial velocity vrad in km s−1. Following the Nyquist theorem, we estimate the error of our vrad measurements to be 0.9 km s−1.

Date HJD Exposure time Detection B1 [G] σ [G] S-index Hα-index CaIRT-index vrad [km s−1]
2010/09/05 5445 10x600s ND N/A N/A 0.206 0.407 0.734 47.6
2010/09/21 5461 16x400s DD 3.47 0.36 0.148 0.382 0.685 47.7
2010/10/13 5483 16x400s DD 1.17 0.28 0.153 0.379 0.669 47.4
2011/01/22 5584 16x400s DD 1.82 0.53 0.163 0.400 0.727 48.2
2011/01/27 5589 4x400s ND N/A N/A 0.146 0.399 0.696 47.9
2011/02/04 5597 16x400s DD 0.99 0.33 0.150 0.388 0.660 46.8
2011/09/26 5831 16x400s DD 6.68 0.43 0.274 0.327 0.614 45.0
2011/10/16 5851 16x400s DD 14.01 0.34 0.223 0.322 0.657 46.4
2011/11/23 5889 4x400s DD 11.06 0.70 0.232 0.311 0.638 47.0
2011/11/24 5890 12x400s DD 10.45 0.50 0.232 0.311 0.638 45.9
2012/01/10 5937 8x400s DD 11.17 0.47 0.199 0.313 0.592 45.6
2012/01/11 5938 8x400s DD 10.73 0.52 0.206 0.313 0.598 45.8
2012/07/16 6125 2x400s N/A N/A N/A 0.218 0.326 0.633 46.8
2012/07/17 6126 4x400s N/A N/A N/A 0.218 0.326 0.633 46.8
2012/07/18 6127 2x400s N/A N/A N/A 0.218 0.326 0.633 46.9
2012/08/16 6156 5x400s N/A N/A N/A 0.193 0.335 0.677 48.3
2012/08/17 6157 3x400s N/A N/A N/A 0.193 0.335 0.677 48.3
2012/09/04 6175 5x400s N/A N/A N/A 0.195 0.328 0.631 47.4
2012/09/05 6176 3x400s N/A N/A N/A 0.191 0.326 0.629 47.3
2012/10/04 6205 8x400s DD 2.58 0.49 0.188 0.339 0.703 47.7
2012/11/12 6244 8x400s DD 5.30 0.61 0.169 0.347 0.727 47.1
2013/01/11 6304 8x400s DD −0.43 0.53 0.163 0.354 0.698 46.4
2013/07/08 6482 2x400s ND N/A N/A 0.195 0.388 0.727 47.9
2013/08/05 6510 3x400s ND N/A N/A 0.202 0.370 0.611 45.1
2013/09/02 6538 4x280s DD −3.63 0.78 0.159 0.388 0.684 46.8
2013/10/06 6572 4x400s ND N/A N/A 0.260 0.415 0.728 46.0
2013/11/07 6604 4x400s ND N/A N/A 0.215 0.388 0.687 46.4
2013/12/03 6630 4x400s ND N/A N/A 0.247 0.366 0.644 45.2
2014/01/09 6667 4x400s DD −0.97 0.58 0.214 0.365 0.607 45.5
2015/08/19 7254 8x400s DD 3.07 0.62 0.203 0.382 0.618 46.0
2015/09/05 7271 8x400s DD 4.31 0.61 0.209 0.383 0.635 46.7
2015/10/08 7304 8x400s DD 3.17 0.45 0.229 0.354 0.613 45.6
2015/10/31 7327 8x400s DD 4.78 0.56 0.218 0.358 0.674 47.1
2015/11/30 7357 8x400s DD 2.07 0.55 0.254 0.349 0.633 45.9
2015/12/18 7375 8x400s DD 1.79 0.53 0.222 0.359 0.663 47.4
2016/08/05 7606 8x400s ND N/A N/A 0.191 0.397 0.637 47.3
2016/09/01 7633 8x400s ND N/A N/A 0.175 0.407 0.639 46.5
2016/10/03 7665 8x400s MD −1.41 0.50 0.155 0.431 0.700 47.2
2016/10/29 7691 8x400s ND N/A N/A 0.176 0.425 0.740 47.8
2016/12/01 7724 8x400s ND N/A N/A 0.213 0.406 0.735 47.5
2016/12/20 7743 8x400s ND N/A N/A 0.215 0.408 0.745 47.9
2017/01/07 7761 8x400s ND N/A N/A 0.193 0.402 0.727 48.0
2017/02/16 7801 8x400s ND N/A N/A 0.208 0.396 0.708 46.8
2017/09/04 8001 8x400s DD −1.77 0.86 0.206 0.360 0.666 46.1
2017/10/06 8033 8x400s DD −0.11 0.57 0.246 0.336 0.623 44.8
2017/10/30 8057 8x400s MD −1.03 0.54 0.201 0.322 0.614 44.8
2017/11/23 8081 8x400s ND N/A N/A 0.244 0.346 0.662 46.1
2018/01/23 8142 8x400s DD −1.15 0.90 0.214 0.327 0.605 45.3
2018/09/18 8380 8x400s ND N/A N/A 0.196 0.395 0.739 47.7
2018/10/22 8414 7x400s ND N/A N/A 0.181 0.405 0.728 47.6
2018/11/16 8439 8x320s ND N/A N/A 0.193 0.406 0.727 47.6
2019/01/07 8491 8x400s ND N/A N/A 0.200 0.396 0.699 46.4
2019/01/26 8510 8x400s ND N/A N/A 0.283 0.371 0.737 46.7
2019/03/08 8551 2x400s ND N/A N/A 0.246 0.428 0.783 46.0
2019/03/11 8553 8x400s ND N/A N/A 0.213 0.388 0.714 45.9
2019/08/03 8699 8x400s DD −3.55 0.54 0.251 0.407 0.751 45.0

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