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Table 1

A selection of lines in the K-band.

λvac [μm] Transition

2.0379 He ii 15–8
2.0431 He i 6p 3P–4s 3S
2.0587 He i 2p 1P–2s 1S
2.0607 He i 7d 3D–4p 3P
2.0706/0802/0842 C iv 3d 3D–3p 3P
2.1081 C iii 5p 1P–5s 1S
2.1126 He i 4s 3S–3p 3P
2.1138 He i 4s 1S–3p 1P
2.14999 He i 7s 3S–4p 3P
2.1586 He i 7p 1P–4d 1D
Brγ blend:
2.1614 He i 7f 3F–4d 3D
2.1623 He i 7f 1F–4d 1D
2.1647 He i 7g 3G–4f 3F
2.1647 He i 7g 1G–4f 1F
2.1652 He ii 14–8
2.1653 He i 7d 1D–4f 1F
2.1655 He i 7d 3D–4f 3F
2.1661 H i 7–4
2.1792 He ii 23–9
2.1821 He i 7p 3P–4d 3D
2.1846 He i 7d 1D–4p 1P
2.1891 He ii 10–7
2.2165 He ii 22–9
2.2291 He i 7s 1S–4p 1P
2.2471/2513 N iii 5p 2P–5s 2S
2.2608 He ii 21–9
2.30697 He i 6p 1P–4s 1S
2.3142 He ii 20–9
2.3470 He ii 13–8

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