Table 2
Spectral features identified in the observed spectra.
| λc | Width | ||
| [Å] | [Å] | Species | Transition |
|
|
|||
| 20 338.0 | H2 | ν = (1–0) S(2) | |
| 20 587.0 | He i | 2p1Po–2s1S | |
| 21 066.6 | Mg i |  – |
|
| 21 098.8 | Al i |  –5s2S1/2 |
|
| 21 169.6 | Al i |  –5s2S1/2 |
|
| 21 218.0 | H2 | ν = (1–0) S(1) | |
| 21 661.2 | 56 | H i | n = 7−4 (Brγ) |
| 21 785.7 | Si i | ||
| 21 825.7 | Si i | ||
| 21 903.4 | Ti i | a5P2– |
|
| 22 062.4 | 116 | Na i | –4s2S1/2 |
| 22 089.7 | * | Na i | –4s2S1/2 |
| 22 614.1 | 91 | Ca i |  –4d3D1 |
| 22 631.1 | * | Ca i |  –4d3D2 |
| 22 657.3 | * | Ca i |  –4d3D3 |
| 22 814.1 | Mg i | 4d3D3,2,1– |
|
| 22 935.3 | 170 | 12CO | ν = (2–0) band head |
| 23 226.9 | 170 | 12CO | ν = (3–1) band head |
| 23 354.8 | Na i | –4d2D3/2 |
|
| 23 385.5 | Na i | –4d2D5/2 |
|
| 23 524.6 | 170 | 12CO | ν = (4–2) band head |
| 23 829.5 | 170 | 12CO | ν = (5–3) band head |
Notes. Identified features in our K-band spectra. Integration widths are listed here for all lines that have equivalent widths measured in this paper. Lines marked with asterisks blend into the line with the next shortest wavelength (the respective previous line in the list); these lines were integrated together. The transition information is composed from Prato et al. (2003) and Kleinmann & Hall (1986).
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