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Table 3
New spectroscopic data of stars and brown dwarfs in σ Orionis.
| Name | Sp. | EW(Ca K) | EW(Ca H) | EW(Hγ) | EW(Hβ) | EW(Hα) | EW(Li i) | SED |
| type | [Å] | [Å] | [Å] | [Å] | [Å] | [Å] | classa | |
|
|
||||||||
| Mayrit 783254 | K0: | +13 ± 2 | +9 ± 2 | +0.7 ± 0.2 | +0.8 ± 0.6 | +0.8 ± 0.2 | +0.62 ± 0.15 | III |
| Mayrit 528005 AB | K7.0 ± 1.0 | +4.5 ± 0.2 | +4.5 ± 0.4 | <+0.4 | <+0.2 | –1.9 ± 0.2 | +0.6 ± 0.2 | II |
| Mayrit 609206 | K7.0 ± 1.0e | –26 ± 3 | –26 ± 3 | –9 ± 2 | –15.0 ± 1.0 | –46 ± 2 | +0.45 ± 0.15 | II |
| Mayrit 957055 | M0.0 ± 1.0 | –13 ± 2 | –12 ± 2 | –3.5 ± 1.5 | –3.5 ± 0.5 | –5.5 ± 0.3 | +0.65 ± 0.15 | III |
| Mayrit 180277 | M1.0 ± 1.0 | –7 ± 2 | –8 ± 2 | –2.5 ± 1.5 | –3.0 ± 1.0 | –4.4 ± 0.2 | +0.60 ± 0.15 | III: |
| Mayrit 156353 | M1.0 ± 1.0 | –10 ± 2 | –9.5 ± 1.0 | –2.0 ± 0.5 | –2.5 ± 0.2 | –3.9 ± 0.2 | +0.55 ± 0.15 | II |
| Mayrit 662301 | M1.0 ± 1.0e | –5.5 ± 1.5 | –5.5 ± 1.0 | –9 ± 2 | –7.0 ± 1.0 | –11.8 ± 0.9 | +0.55 ± 0.10 | II |
| Mayrit 1298302 | M3.0 ± 0.5 | >–2.0 | >–2.0 | >–1.0 | –2.6 ± 0.2 | –3.5 ± 0.3 | <+0.2 | III: |
| Mayrit 872139 | M5.5 ± 1.0 | ... | ... | ... | ... | –13 ± 3 | <+1.0 | III |
| Mayrit 1196092 | M6.0 ± 1.0e | ... | ... | ... | ... | –125 ± 15 | <+1.0 | II |
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