Table 3
Properties of the calibrators for the VLTI/MATISSE and GRAVITY observations.
| Name | Spectral type | LDD diameter (mas) | Teff (K) | log 𝑔 | [Z] |
|---|---|---|---|---|---|
| gam02 Nor | K0III | 2.46 ± 0.25 | 4750 | 3.0 | 0.25 |
| eps Sco | K1III | 5.93 ± 0.45 | 4500 | 2.5 | −0.25 |
| nu Oph | K1III | 2.83 ± 0.29 | 5000 | 3.0 | 0.00 |
| HD 94683 | K4III | 2.49 ± 0.25 | 4000 | 0.0 | 0.00 |
| HD 91056 | M0III | 4.40 ± 0.49 | 3800 | 1.0 | 0.00 |
| HD 16074 | K2III | 1.77 ± 0.13 | 4250 | −0.5 | 0.00 |
| ups Cet | M0III | 5.91 ± 0.76 | 3800 | 1.15 | −0.05 |
| HD 302821 | A7Ie | 1.26 ± 0.10 | 3700 | 0.00 | 0.00 |
| zet Vol | K0III | 2.23 ± 0.21 | 4700 | 2.5 | −0.2 |
| CD-55 3254 | M3 | 2.76 ± 0.27 | 3300 | 0.00 | 0.00 |
| HD 159881 | K5III | 2.81 ± 0.24 | 4500 | 2.5 | −0.25 |
| HD 152636 | K5III | 2.39 ± 0.22 | 4000 | 2.5 | −0.05 |
| HD 96442 | M1/2III | 1.64 ± 0.16 | 4000 | 0.00 | 0.00 |
| HD 103859 | K4III | 1.43 ± 0.11 | 4000 | 0.00 | 0.00 |
| 80 Cet | M0III | 3.57 ± 0.36 | 4000 | 0.00 | 0.00 |
| HD 89736 | K5/M0III | 2.58 ± 0.23 | 3900 | 0.00 | 0.00 |
| HD 90677 | K3II | 1.99 ± 0.19 | 4000 | 0.00 | 0.00 |
| Q Car | K3III | 2.45 ± 0.27 | 4300 | 0.00 | 0.00 |
| HD 60228 | M1III | 2.51 ± 0.24 | 3900 | 0.00 | 0.00 |
Notes. Shown are the name, spectral type, limb-darkened disk diameter (LDD) from Bourges et al. (2017), and the stellar parameters of the synthetic spectra (MARCS, Gustafsson et al. 2008) used for the calibrators: effective temperature (Teff), surface gravity (log 𝑔), and metallicity [Z] available in the VizieR database of astronomical catalogues (Ochsenbein et al. 2000).
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