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Table 1
Log of observations of EK Eri (for details, see Sect. 2.1).
| Date | HJD | Phot. | S-index | Ca ii | Hα | Bl | σ | RV |
| 2 450 000+ | Phase | 854.2 nm | G | G | km s-1 | |||
|
|
||||||||
| 20 Sep. 07 | 4364.69 | 0.212 | 0.501 | 0.319 | 0.226 | –98.6 | 1.0 | 7.118 |
| 12 Nov. 07 | 4417.44 | 0.383 | 0.457 | 0.291 | 0.233 | –21.1 | 0.7 | 7.047 |
| 13 Nov. 07 | 4418.45 | 0.386 | 0.456 | 0.297 | 0.233 | –21.4 | 0.9 | 7.053 |
| 19 Jan. 08 | 4485.31 | 0.603 | 0.470 | 0.303 | 0.230 | –28.9 | 1.2 | 7.096 |
| 20 Jan. 08 | 4486.38 | 0.606 | 0.463 | 0.295 | 0.227 | –31.6 | 0.9 | 7.110 |
| 06 Feb. 08 | 4503.35 | 0.661 | 0.469 | 0.302 | 0.234 | –45.6 | 0.8 | 7.111 |
| 03 Apr. 08 | 4560.31 | 0.845 | 0.513 | 0.339 | 0.250 | –62.7 | 1.2 | 7.145 |
| 28 Aug. 08 | 4707.68 | 0.323 | 0.502 | 0.331 | 0.251 | –12.8 | 0.7 | 7.052 |
| 14 Sep. 08 | 4724.60 | 0.378 | 0.511 | 0.338 | 0.262 | –27.9 | 1.4 | 7.043 |
| 24 Sep. 08 | 4734.57 | 0.410 | 0.510 | 0.341 | 0.270 | –18.8 | 1.1 | 7.000 |
| 29 Sep. 08 | 4739.71 | 0.426 | 0.506 | 0.338 | 0.264 | –13.7 | 0.8 | 6.996 |
| 20 Dec. 08 | 4821.37 | 0.691 | 0.543 | 0.365 | 0.266 | –36.8 | 1.1 | 7.046 |
| 30 Jan. 09 | 4862.35 | 0.824 | 0.588 | 0.390 | 0.291 | –46.4 | 1.0 | 7.207 |
| 25 Feb. 09 | 4888.31 | 0.908 | 0.573 | 0.369 | 0.270 | –67.8 | 0.9 | 7.176 |
| 28 Sep. 09 | 5103.62 | 0.605 | 0.602 | 0.423 | 0.286 | –48.0 | 1.2 | 7.080 |
| 27 Oct. 09 | 5132.57 | 0.699 | 0.576 | 0.396 | 0.280 | –56.9 | 1.3 | 7.101 |
| 15 Jan. 10 | 5212.44 | 0.957 | 0.547 | 0.339 | 0.254 | –88.6 | 2.7 | 7.190 |
| 03 Feb. 10 | 5231.32 | 0.018 | 0.566 | 0.354 | 0.259 | –90.7 | 2.1 | 7.200 |
| 13 Feb. 10 | 5241.29 | 0.051 | 0.575 | 0.363 | 0.263 | –90.9 | 2.1 | 7.214 |
| 06 Mar. 10 | 5262.30 | 0.119 | 0.548 | 0.353 | 0.258 | –77.0 | 1.2 | 7.218 |
| 22 Mar. 10 | 5278.32 | 0.171 | 0.533 | 0.348 | 0.260 | –58.9 | 1.0 | 7.195 |
| 21 Sep. 10 | 5461.62 | 0.764 | 0.598 | 0.381 | 0.278 | –90.9 | 1.2 | 7.062 |
| 13 Oct. 10 | 5483.64 | 0.836 | 0.565 | 0.370 | 0.262 | –94.6 | 0.9 | 7.107 |
| 12 Nov. 10 | 5513.55 | 0.932 | 0.571 | 0.365 | 0.264 | –93.1 | 1.1 | 7.183 |
| 04 Dec. 10 | 5535.36 | 0.003 | 0.576 | 0.359 | 0.270 | –87.2 | 6.8 | 7.150 |
| 03 Jan. 11 | 5565.28 | 0.100 | 0.585 | 0.374 | 0.268 | –77.7 | 1.0 | 7.150 |
| 23 Jan. 11 | 5585.44 | 0.165 | 0.589 | 0.436 | 0.272 | –57.6 | 1.0 | 7.166 |
| 21 Mar. 11 | 5642.31 | 0.350 | 0.574 | 0.403 | 0.277 | –39.5 | 1.2 | 7.130 |
Notes. Date of mid-observation, corresponding HJD, photometric phase, S-index for Ca ii H & K, Rc values for Ca ii 854.2 nm and Hα, Bℓ values and their uncertainties, and radial velocity of the LSD Stokes I profile.
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