Open Access
Table 1
Spectral-types of unreddened comparison stars.
| 1 Standard | 2 SpT | 3 SpT(L) | 4 Instrument | |
|---|---|---|---|---|
| HD 047839 | O7 V | O7 V | (O7 V) | HARPS |
| HD 091824 | O7 V | O6 V | (O7 V) | FEROS, UVES |
| HD 093028 | O8 V | O8 V | (O9 IV) | FEROS |
| HD 214680 | O8 V | O9 V | (O8 V) | ELODI |
| HD 038666 | O8 V/O9 III | O9.5IV | (O9.5V) | HARPS |
| HD 210809 | O9 Ia | O9 Ib | (O8 Iab) | ELODIE |
| HD 091983(V) | O9 V | O9.5Ib | (O9 IV) | FEROS |
| HD 150898 | B0 Ib | B0.5Ia | X-shooter | |
| HD 064760 | B0 Ib | B0.5Ib | FEROS, HARPS | |
| HD 036512 | B0 V | B0 V | UVES | |
| HD 046328 | B1 III | B1 III | FEROS | |
| HD 051283 | B1 III | B2 III | FEROS | |
| HD 055857 | B1 III/B0.5V | B0.5V | FEROS | |
| HD 040111 | B1 Ia | B1 Ib | ESPRESSO | |
| HD 150168 | B1 Ib | B1 Ia | FEROS | |
| HD 165024 | B1 Ib | B2 Ib | FEROS | |
| HD 031726 | B1 V | B1 V | X-shooter | |
| HD 074273 | B1 V | B1.5V | FEROS | |
| HD 003360 | B2 III | B2IV | ELODI | |
| HD 091316 | B2 Ib | B1 Iab | HARPS | |
| HD 064802 | B3 V/B2 V | B2 V | X-shooter |
Notes. SpT (Col. 2) using procedure of Sect. 4, SpT(L) (Col. 3) by Cardelli et al. (1989); Gordon et al. (2009) and in parenthesis by Sota et al. (2014).(V) Photometric variable star (Fig. 4).
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