Table 1
Sample overview.
| Star | Sp. T. | N epochs | IR excess | |
|---|---|---|---|---|
| B111 | O4.5 V | 4 | ||
| B164 | O6Vz | 4 | ||
| B215 | B1 V | 3 | Yes | |
| B243 | B9 III | 5 | Yes | |
| B253 | B3-B5 III | 3 | ||
| RT17, Sana17 | B268 | B9 III | 5 | Yes |
| B275 | B7 III | 3 | Yes | |
| B289 | O9.7V | 4 | Yes | |
| B311 | O8.5 Vz | 4 | ||
| B331 | late-B | 1 | Yes | |
| B337 | late-B | 3 | Yes | |
| 326 | O6 III + B1 V | 3 | ||
| B86 | B9 III + ? | 3 | ||
| B93 | B2V | 2 | ||
| B150 | B5 V | 3 | Yes | |
| New OB | B181 | O9.7 III | 1 | |
| B205 | B2V | 3 | ||
| B213 | B3 III-V | 1 | ||
| B234 | B3 III-V | 1 | ||
| B272 | B7 III | 1 | ||
| CEN55 | B2 III | 1 | ||
| B228 | G-type star | 3 | ||
| B23 | F-type star | 3 | ||
| Low mass | B269 | F-type star | 2 | |
| B290 | A-type star | 3 | ||
| B293 | F-type star | 2 | ||
| B336 | G-type star | 3 | ||
Notes. The first column shows the targets included in the Sana et al. (2017) sample and the new targets from the last observing campaign separated in two groups: the O and B stars included in the analysis of this paper and the targets identified as low-mass stars. The second and third columns list the name and spectral type, Column 4 shows the number of observations for each target, and the last column indicates whether or not the stars have IR-excess. Targets in boldface are classified as binaries following the analysis in Section 3.2. Targets 326 and B86 are double-lined spectroscopic binaries (SB2).
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