Open Access
Table 5
Main standards within the new grid.
| V | IV | III | II | Ib | Iab | Ia | Ia+ | |
|---|---|---|---|---|---|---|---|---|
| B0 | τ Sco | HD 48434 | HD 205196 | ε Ori | ||||
| B0.2 | HD 2083 | ϕ1 Ori | HD 6675 | HD 16808 | 69 Cyg | HD 171012 | ||
| B0.5 | HD 36960 | 1 Cas | HD 193007 | 26 Cep HD 192422 | κ Ori HD 194839 | |||
| B0.7 | HD 37042, HD 201795 | ξ1 CMa | HD 13969 HD 14053 | HD 193076 | HD 190066 | HD 216411 | ||
| B1 | HD 24131, ω1 Sco | β CMa (B1 II–III) | ζ Per | HD 13854 | HD 169454 | |||
| B1.5 | HD 35299 HD 215191 | 12 Lac | ε CMa | HD 13841 HD 193183 | HD 5551 | HD 14956 | HD 190603 | |
| B2 | HD 36629 β2 Sco | γ Peg ζ Cas | γ Ori π4 Ori | HD 31327 | 9 Cep | χ2 Ori HD 14143 | ||
| B2.5 | 22 Sco σ Sgr | π2 Cyg | 3 Gem | 55 Cyg | ||||
| B3 | η Aur HD 178849 | ι Her ξ Cas | HD 49567 HD 21483 | HD 194779 | ι CMa | o2 CMa HD 14134 | ||
| B5 | τ Her HD 4142 | HD 211924 HD 170682 | HD 191243 | HD 9311 | HD 7902 | η CMa | ||
| B7 | 3 Vul 16 Tau | 19 Tau (B6 IV) | HD 1279 β Tau | 13 Cep | HD 199478 | (HD 183143) | ||
| B8 | HD 171301 21 Tau | π Cet HD 3240 | 21 Aql τ And | 53 Cas | HD 14542 | β Ori | ||
| B9 | 134 Tau HD 21931 | (α Del) | 32 Peg 12 Cas | HD 21661 (II–III) | HD 35600 | σ Cyg | HD 223960 HD 21291 | |
Notes. An online version of this table linked to downloadable spectra is available at https://astroplus.ua.es/mkbtypestds. Among the non-supergiants, objects with low projected rotational velocity (<70 km s−1) are in italics.
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