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Home All issues Volume 673 (May 2023) A&A, 673 (2023) A150 Full HTML
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Table 4

Radiative transitions treated in detail. Wavelengths are given in vacuum (λ < 2000 Å) or air (λ > 2000 Å).

# Ion Id λ (Å) Lower Upper
0 H I Ly-α 1215.70 n = 1 n = 2
1 H I Ly-β 1025.75 n = 1 n = 3
2 H I Ly-γ 972.56 n = 1 n = 4
3 H I Ly-δ 949.77 n = 1 n = 5
4 H I H-α 6562.96 n = 2 n = 3
5 H I H-β 4861.50 n = 2 n = 4
6 H I H-γ 4340.62 n = 2 n = 5
7 H I Pa-α 18 752.27 n = 3 n = 4
8 H I Pa-β 12 818.86 n = 3 n = 5
9 H I Br-α 40 513.47 n = 4 n = 5
10 H I Ly-cont 911.12 n = 1 H II
11 H I Ba-cont 3635.67 n = 2 H II
12 H I Pa-cont 8151.31 n = 3 H II
13 H I Br-cont 14419.07 n = 4 H II
14 H I Ph-cont 22 386.68 n = 5 H II
15 H I fake cont 40 000.00
16 Ca II Ca II H 3968.46 3p6 4s 2S 3p6 4p
17 Ca II Ca II K 3933.65 3p6 4s 2S 3p6 4p
18 Ca II Ca II IR 8662.16 3p6 3d 2D3/2 3p6 4p
19 Ca II Ca II IR 8498.01 3p6 3d 2D3/2 3p6 4p
20 Ca II Ca II IR 8542.05 3p6 3d 2D5/2 3p6 4p
21 Ca II 1044.37 3p6 4s 2S Ca III
22 Ca II 1218.00 3p6 3d 2D3/2 Ca III
23 Ca II 1218.90 3p6 3d 2D5/2 Ca III
24 Ca II 1417.23 3p6 4p Ca III
25 Ca II 1421.72 3p6 4p Ca III
26 He I 625.58 1s2 1S0 1s 2s 3S1
27 He I 601.42 1s2 1S0 1s 2s 1S0
28 He I 10 830.29 1s 2s 3S1 1s 2p 3Po
29 He I He I 584 584.35 1s2 1S0 1s 2p
30 He I 20 580.82 1s 2s 1S0 1s 2p
31 He II 303.79 1s 2S1/2 2s 2S1/2
32 He II He II 304 303.78 1s2S1/2 2p 2Po
33 He I 503.98 1s2 1S0 He II
34 He I 2592.02 1s 2s 3S1 He II
35 He I 3109.80 1s 2s 1S0 He II
36 He I 3407.63 1s 2p He II
37 He I 3663.37 1s 2p He II
38 He II 227.84 1s2S1/2 He III
39 He II 911.34 2s 2S1/2 He III
40 He II 911.36 2p He III

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