Table 2.
Results of the RV measurements for the sample of WC stars.
| WR# | Spectral type | Binary status |
Period | e | Δ RV | σRV | |
|---|---|---|---|---|---|---|---|
| (GCWR) | GCWR | This work | (d) | (km s−1) | (km s−1) | ||
| 4 | WC5+? | SB1, no d.e.l. | Binary | – | – | 10.4 | 2.5 |
| 5 | WC6 | – | Single | – | – | 4.9 | 1.7 |
| 111 | WC5 | – | Single | – | – | 4.9 | 1.6 |
| 113 | WC8d+O8-9IV | SB2 | Binary | 29.700 ± 0.001 (a) | 0 (fixed) (a) | 282.6 | 93.9 |
| 117 | WC9d | – | Single | – | – | 4.5 | 1.5 |
| 119 | WC9d | – | Binary | – | – | 11.0 | 3.2 |
| 135 | WC8 | – | Single | – | – | 4.7 | 1.6 |
| 137 | WC7pd+O9 | SB2 | Binary | 4766 ± 66 (b) | 0.18 ± 0.04 (b) | 25.2 | 4.6 |
| 140 | WC7pd+O4-5 | SB2, VB | Binary | 2895.68 ± 0.17 (c) | 0.8996 (c) |
21.6 | 6.5 |
| 143 | WC4+Be | d.e.l. | Binary | – | – | 11.2 | 4.0 |
| 146 | WC6+O8 | SB2, VB | Binary | – | – | 18.9 | 5.9 |
| 154 | WC6 | – | single | – | – | 3.4 | 1.3 |
Notes. Δ RV Eq. (14) and σRV Eq. (13) are calculated in this work with the full spectrum as a mask and are used to classify the objects as binaries or single stars. We do not include the archival period of 2.4096 d for WR 4 due to the fact that we rule out short-scale variations (Appendix A). RV plots for the known binaries can be found in Figs. 4 and 7.
References.
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