Table 2
Summary of optical and near-infrared spectra available in the literature and presence of youth spectroscopic features.
| Object | SpT | Li ia | Peaked Hb | Gc | Ref. |
|
|
|||||
| J0033−1521 | L4β | N | N | FLD | 1, 2 |
| J0045+1634 | L2β | N, Y | Y | VL | 1, 2, 3 |
| J0241−0326 | L0γ | N | Y | VL | 1, 2, 3 |
| J0355+1133 | L5γ | Y | Y | VL | 1, 2, 3, 4 |
| J0501−0010 | L4γ | Y | Y | VL | 1, 2, 5 |
| G 196–3B | L3β | Y | Y | VL | 1, 2, 3, 5, 6, 7 |
| J1022+5825 | L1β | N | N | FLD | 1, 2 |
| J1552+2948 | L0β | N | Y | INT | 1, 2 |
| J1726+1538 | L3β | N, Y | Y | INT | 8, 1, 2 |
| J2208+2921 | L3γ | Y | Y | VL | 1, 2 |
Notes.
Lithium at 670.8 nm. For a couple of objects, some authors claim detection (“Y”) and others do not (“N”); this likely depends on the quality and spectral resolution of the data.
Gravity class indicator from Allers & Liu (2013): very low (VL), intermediate (INT), and high (FLD) gravity.
Reference. (1) Cruz et al. (2009, and references therein); (2) Allers & Liu (2013); (3) this paper; (4) Faherty et al. (2013); (5) Allers et al. (2010); (6) Rebolo et al. (1998); (7) Zapatero Osorio et al. (2010); (8) Schweitzer et al. (2001).
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