Table C.1.
Achernar A spectroscopic data set. The table’s left panel describe the instrument characteristics: Δλ refers to the spectrograph wavelength coverage, while R refers to the spectral resolution. On the middle panel, Nsp refers to the total number of spectra gathered from each spectrograph, while Nepoch refers to the number of distinct observation epochs (i.e. observation nights). The table’s right panel details the instrument coverage of the 13 significant metallic absorption lines of Achernar A used in this study (see text).
| Instrument or database | Δλ | R = λ/dλ | Nsp | Nepoch | Line set 1 | Line set 2 | Line set 3 | C II | O I |
|---|---|---|---|---|---|---|---|---|---|
| (Å) | (†) | (3) | (3) | (5) | (4267.26 Å) | (7774 Å) | |||
| ESO/HARPS(a) | 3900 – 6800 | 115 000 | 39 (19) | 5 | y | y | y | y | n |
| ESO/UVES(b) | 3900 – 8800 | ∼55 000 | 8 | 3 | y | y | y | y | y |
| ESO/FEROS(c) | 3900 – 8800 | 48 000 | 175 (172) | 44 | y | y | y | y | y |
| OCA/BESO(d) | 3900 – 8000 | 48 000 | 20 (9) | 9 | y | y | y | y | y |
| CTIO/CHIRON(e) | 4500 – 8000 | ∼130 000 | 73 (68) | 22 | n | n | y | n | y |
| BeSOS/PUCHEROS(f) | 4250 – 7300 | 18 000 | 457 (401) | 10 | n | y | y | y | n |
| Euler/CORALIE(g) | 3900 – 6800 | 55 000 | 1 | 1 | y | y | y | y | n |
| BeSS(h) | 4250 – 7150 | 10 000 | 1 | 1 | n | y | y | n | n |
Notes. (a) The High-Accuracy Radial-velocity Planet Searcher (HARPS, Pepe et al. 2002) echelle spectrograph is mounted on the 3.6m telescope at La Silla Observatory (Chile). (b) The Ultra Violet and Echelle Spectrograph (UVES, Dekker et al. 2000) is mounted on the Unitary Telescope 2 (UT2, Kueyen) at the Very Large Telescope (VLT) ESO Observatory (Paranal, Chile). (c) FEROS (Kaufer & Pasquini 1998) is mounted on the 2.2m telescope at La Silla. (d) The Bochum Echelle Spectrograph for OCA (BESO, Steiner et al. 2006) is mounted on the 1.5m Hexapod-Telescope at the Observatorio Cerro Armazones (OCA, Cerro Armazones, Chile). (e) The CHIRON echelle spectrograph (Tokovinin et al. 2013) is mounted on the 1.5m telescope at Cerro Tololo Interamerican Observatory (CTIO, Cerro Tololo, Chile). (f) PUCHEROS (the Pontificia Universidad Catolica High Echelle Resolution Optical Spectrograph, Vanzi et al. 2012) is mounted on the ESO 50-cm telescope of the Observatory UC Santa Martina near Santiago, Chile. (g) CORALIE (Queloz et al. 2001) is mounted on the Euler 1.2m telescope of the Swiss Observatory at La Silla. (h) BeSS 2011-10-18 (observer: B. Heathcote). (†) The number in brackets refers to the number of spectra actually used for RV computation after prior spectrum selection, if some spectra are rejected (see text).
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