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Table 1.
Spectroscopic observations of V889 Her.
| Date | HJD–2400000 | N | F | ⟨S/N⟩ | σ(%) | Instrument |
|---|---|---|---|---|---|---|
| Jul–Aug 1999 | 51383.482–51394.511 | 11 | 0.596 | 252 | 0.455 | SOFIN |
| Sep 1999 | 51443.401–51449.387 | 6 | 0.434 | 199 | 0.743 | SOFIN |
| Oct 1999 | 51471.359–51475.337 | 4 | 0.325 | 285 | 0.400 | SOFIN |
| Jul–Aug 2001 | 52120.452–52131.470 | 12 | 0.595 | 234 | 0.457 | SOFIN |
| Aug 2002 | 52507.447–52515.429 | 8 | 0.552 | 226 | 0.490 | SOFIN |
| Jul–Aug 2004 | 53215.532–53228.485 | 11 | 0.723 | 239 | 0.786 | SOFIN |
| Jul 2005 | 53567.406–53577.562 | 16 | 1.0 | 250 | 0.511 | SOFIN |
| Aug–Sep 2006 | 53979.443–53991.449 | 6 | 0.476 | 225 | 0.651 | SOFIN |
| Jul 2007 | 54300.520–54311.576 | 15 | 0.950 | 235 | 0.500 | SOFIN |
| Sep 2008 | 54717.368–54723.486 | 8 | 0.703 | 228 | 0.680 | SOFIN |
| Aug–Sep 2009 | 55069.520–55081.520 | 14 | 0.606 | 196 | 0.760 | SOFIN |
| Jul 2010 | 55395.516–55408.642 | 10 | 0.707 | 208 | 0.682 | SOFIN |
| Aug–Sep 2012 | 56166.418–56174.413 | 9 | 0.458 | 260 | 0.598 | SOFIN |
| Aug 2013 | 56521.424–56525.446 | 5 | 0.408 | 147 | 0.744 | SOFIN |
| Sep 2013 | 56545.484–56551.581 | 7 | 0.479 | 210 | 0.723 | HARPS |
| Aug 2014 | 56881.493–56889.454 | 10 | 0.710 | 344 | 0.386 | FIES |
| Jul 2015 | 57204.511–57213.563 | 10 | 0.657 | 299 | 0.482 | FIES |
| Jun 2016 | 57555.553–57563.571 | 11 | 0.764 | 259 | 0.558 | FIES |
| Jun 2017 | 57908.615–57918.531 | 11 | 0.496 | 116 | 0.882 | SOFIN |
Notes. The table includes: dates, HJD interval, number of spectra (N), esimated phase coverage (F), mean signal-to-noise ratio (⟨S/N⟩), deviation between the Doppler imaging solution and the observations (σ) and instrument.
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