Table 1.
Stellar demographics of Wd1.
| Spectral | Cluster | New to |
|---|---|---|
| type | population | this work |
| O9-9.5 III | 27 | 25 |
| O9-9.5 II,II-III | 11 | 11 |
| O9-9.5 Iab,Ib | 31 | 11 |
| B0-0.5 Ia,Iab,Ib | 23 | 7 |
| B1-1.5 Ia,Iab | 10 | 2 |
| B2-4 Ia | 7 | 0 |
| O4-8 Ia+ | 2 | 0 |
| B0-2Ia+/WNVL | 4 | 1 |
| B5-9 Ia+ | 4 | 1 |
| LBV | 1 | 0 |
| YHG+RSG | 10 | 0 |
| sgB[e] | 1 | 0 |
| OB SB2 | 12 | 10 |
| OeBe | 1 | 1 |
| WN5-8 | 14 | 0 |
| WC8-9 | 8 | 0 |
| Total | 166 | 69 |
Notes. Sub-panels in the table comprise, from the top: giants and supergiants, hypergiants, transitional stars, binaries of uncertain spectral type and/or luminosity class (e.g. Wd1-36, W1001, W1003, and the supergiant B[e] (sgB[e]) star Wd1-9), OeBe stars and WRs. Transitional stars comprise luminous blue variables (LBVs), yellow hypergiants (YHGs), and red supergiants (RSGs). We include the O9-9.5 I-III stars W1033 and -1040 in the O9-9.5 Iab,Ib category (Sect. 3.4); thus explaining the slight discrepancy between this table and the version in Clark et al. (2019c).
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