Table 2.
Overview of the collected observations that were used in our analysis, listed per spectrograph.
| Spectrograph | Observatory | Time | R | λ (nm) | # obs. | ⟨S/N⟩ |
|---|---|---|---|---|---|---|
| HERMES(1) | 1.2-m Mercator telescope, | Mar.–May 2009 | 85 000 | 377−900 | 86 | 181 |
| Roque de los Muchachos, Spain | Jan. 2010 | 85 000 | 377−900 | 82 | 294 | |
| HIDES(2),(3) | 1.88-m telescope, | Dec. 2008 | 50 000 | 386−774 | 7 | 222 |
| Okayama Astrophysical Observatory, Japan | Mar. 2009 | 50 000 | 386−774 | 165 | 205 | |
| Jul.–Aug. 2009 | 50 000 | 386−774 | 19 | 150 | ||
| McKellar(4) | 1.2-m telescope, | May–Nov. 2009 | 60 000 | 445−460 | 34 | 157 |
| Dominion Astrophysical Observatory, Canada | ||||||
| SES(5) | 2.1-m telescope, | Dec. 2008 | 60 000 | 543−668 | 31 | 195 |
| McDonald Observatory, Texas, USA | Jun. 2009 | 60 000 | 518−620 | 32 | 195 | |
| SOPHIE(6),(7) | 1.93-m telescope, | Jan. 2008 | 76 000 | 387−694 | 57 | 246 |
| Observatoire de Haute-Provence, France | Dec. 2008 | 40 000 | 387−694 | 3 | 216 | |
| Jul. 2009 | 40 000 | 387−694 | 90 | 220 | ||
| TCES | 2.0-m telescope, | Jul.–Oct. 2009 | 67 000 | 472−736 | 66 | 173 |
| Türinger Landessternwarte, Germany |
Notes. For each observational campaign, the time, spectral resolution, covered wavelength range, and average ⟨S/N⟩ are also given. Here, the ⟨S/N⟩ were calculated in a 1 nm-margin around wavelength λ = 550 nm, except for the McKellar spectra, where the whole available wavelength range was used. For each spectrum, the S/N value was estimated as the inverse relative scatter with respect to the scaled average spectrum.
References. (1) Raskin et al. (2011); (2) Izumiura (1999); (3) Kambe et al. (2002); (4) Monin et al. (2014); (5) McCarthy et al. (1993); (6) Perruchot et al. (2008); (7) Bouchy et al. (2009).
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