Table 4.
Adopted metallicity [Fe/H] ranges for metal-poor T/Y dwarf candidates.
| Name | [Fe/H]max | [Fe/H]min | Spec. | Sublum. |
|---|---|---|---|---|
| T, Y dwarfs | +0.3 | −0.3 | – | – |
| W0004 | −0.3 | −1.0 | Y | N |
| (1)W0013 | −0.5 | −1.5 | N | – |
| W0156 | −0.28 | −0.52 | N | – |
| W0301 | −0.3 | −1.0 | Y | N |
| (2)Ross 19B | −0.28 | −0.52 | N | Y? |
| (3)W0414 | −0.5 | −1.5 | Y | – |
| W0422 | −0.3 | −1.7 | N | Y? |
| W0505 | −1.0 | −1.7 | N | – |
| (4)W0523 | −0.5 | −1.5 | N | – |
| W0711 | −0.3 | −1.0 | Y | – |
| W0738 | −0.5 | −2.0 | N | – |
| W0905 | −0.3 | −1.7 | N | – |
| (1)W0833 | −0.5 | −1.5 | N | – |
| ULAS0926 | −0.3 | −1.0 | N | – |
| W1019 | −0.3 | −1.0 | Y | – |
| (5)The Accident | −1.0 | – | N | Y? |
| (6)W1553 | −0.5 | −1.5 | Y | Y |
| (7)W1810 | −1.0 | −2.0 | Y | Y |
| Wolf 1130C | (8)−0.52 | (9)−1.46 | Y | Y |
| W2014 | −0.3 | −1.0 | Y | Y? |
| W2105 | 0.0 | −1.0 | Y | – |
| W2207 | −0.3 | −1.7 | N | – |
| W2217 | −0.5 | −2.0 | N | Y |
Notes. Objects are ordered by RA. The ‘Spec.’ column indicates whether the object has been spectroscopically observed. The ‘Sublum.’ column indicates if the object appears sub-luminous in the colour-magnitude diagrams in Fig. 1. (1): Pinfield et al. (2014); (2): From the metallicity of the primary (Schneider et al. 2021); (3): Schneider et al. (2020); (4): Brooks et al. (2022); (5): Kirkpatrick et al. (2021a); (6): Meisner et al. (2021); (7): Lodieu et al. (2022); (8): From the metallicity of the primary (Woolf & Wallerstein 2006); (9): From the metallicity of the primary (Newton et al. 2014). Rest: from our assignation, see Section 3.3.
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