Table 4.
Classification of the sample sources according to the presence of VMS, WR stars, or none of them.
| Source | He II 1640 | He II 1640 | He II 4686 | N III 4640+C III 4650 | C IV 5801-12 | Other | Classification | Literature |
|---|---|---|---|---|---|---|---|---|
| emission | EW > 3 Å | broad | ||||||
| R136 | Yes | Yes | Yes | Weak/absent | Weak/double peak | VMS | ||
| NGC 3125-A1 | Yes | Yes | Yes | Medium | Weak | N IV 1486 | VMS or WR | WR (1), VMS (2) |
| NGC 5253-5 | Yes | No | Yes | Weak/absent | Weak | Narrow He II 1640 | Unknown | VMS (3) |
| Tol 89-A | Yes | Yes | Yes | Medium | Broad/strong | WR | WR (4) | |
| NGC 5447S | Yes | No | ? | Weak/absent | ? | He II 1640 central abs. | ? | |
| NGC 5455 | Yes | No | Yes | Medium | Broad/strong | N IV 1720 | WR | |
| NGC 5462S | No | No | No | ? | ? | None | ||
| SIP2007-1 | Yes | No | Yes | Strong | ? | N IV 1486 & N IV 1720 | WR | |
| HGGK 1054 | Yes | No | Yes | Strong | ? | N IV 1486 & N IV 1720 | WR | |
| HGGK 1216 | Yes | No | No | Weak/absent | Absent | nebular He II 4686 ? | Unknown | |
| NGC 4214 | Yes | Yes | Yes | Absent | – | Weak He II 4686 | Unknown | |
| NGC 4670 | Yes | No | No | Absent | – | Unknown | ||
| Mrk 33 | No | No | ? | Weak/absent | Weak/absent | None | ||
| J0036−3333 | No | No | No | Absent | Absent | None | ||
| J0115−0051/SB49 | Yes | No | Yes | Medium | Broad/strong | N IV 1486 & N IV 1720 | WR | VMS? (5) |
| J0823+2806 | Yes | No | ? | Absent | ? | He II 1640 central abs. | Unknown | |
| J0942+0928/SB80 | Yes | No | Yes | Medium? | ? | ? | ||
| J1105+4444 | Yes | No | No | Absent | Weak/absent | ? | ||
| J1129+2034/SB179 | Yes | Yes | Yes | Weak/absent | ? | N IV 1720 | VMS | VMS? (5) |
| J1132+1411/SB125 | Yes | No | No | Weak/absent | ? | Weak He II 1640, central abs. | None | VMS? (5) |
| J1200+1343 | Yes | Yes | Yes | Weak/absent | ? | N IV 1486 | VMS | |
| J1215+2038/SB191 | Yes | Yes | Yes | Medium | Weak | N IV 1720 | VMS or WR | VMS? (5) |
| J1304−0333/SB9 | Yes | No | Yes | Strong | Broad/strong | Weak N IV 1720 | WR | VMS? (5) |
| J1314+3452/SB153 | Yes | No | ? | Medium | Broad | Weak N IV 1486, N IV 1720 | WR? | VMS? (5) |
| J1428+1653 | Yes | No | No | Absent | ? | ? | ||
| J1525+0757 | Yes | Yes | No | Absent | Weak | ? |
Notes. See Sect. 3.2 for the definition of the various classes. Columns are source name and classification from this study and the literature.
References. (1) Hadfield & Crowther (2006); (2) Wofford et al. (2014); (3) Smith et al. (2016); (4) Sidoli et al. (2006); (5) Senchyna et al. (2021).
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