a table of observational chromospheric emission lines

Here is a table of observational chromospheric emission lines for low-mass stars:

Emission lines Wavelength (nm) Transition terms Landé factors \(g_\mathrm{eff}\)
H I (Hα) 656.28 - - 1
H I (Hβ) 486.13 - - 1
H I (Hγ) 434.05 - - 1
H I (Hδ) 410.17 - - 1
H I (Hε) 397.01 - - 1
H I (Hζ) 388.90 - - 1
He I D3 587.56 \(^3P^{\circ}_{2}\;-\;{}^3D_{3}\) \(\tfrac{3}{2}\;-\;\tfrac{4}{3}\) 7/6
He I 447.15 \(^3P^{\circ}_{2}\;-\;{}^3D_{2}\) \(\tfrac{3}{2}\;-\;\tfrac{7}{6}\) 4/3
He I 402.62 \(^3P^{\circ}_{1}\;-\;{}^3D_{2}\) \(\tfrac{3}{2}\;-\;\tfrac{6}{7}\) 1
He I 388.86 \(^3S_{1}\;-\;{}^3P_{2}\) \(2\;-\;\tfrac{3}{2}\) 5/4
He II 468.57038 \(^2D_{3}\;-\;{}^2F^{\circ}_{6}\) \(\tfrac{3}{2}\;-\;\tfrac{5}{2}\) 9/10
Na II D1 588.995 \(^2S_{1/2}\;-\;{}^2P^{\circ}_{3/2}\) \(1\;-\;\tfrac{4}{3}\) 7/6
Na II D2 589.592 \(^2S_{1/2}\;-\;{}^2P^{\circ}_{1/2}\) \(2\;-\;\tfrac{2}{3}\) 4/3
Ca II K 393.37 \(^2S_{1/2}\;-\;{}^2P^{\circ}_{3/2}\) \(1\;-\;\tfrac{4}{3}\) 7/6
Ca II H 396.85 \(^2S_{1/2}\;-\;{}^2P^{\circ}_{1/2}\) \(2\;-\;\tfrac{2}{3}\) 4/3
Ca II IRT − 1 849.80 \(^2D_{3/2}\;-\;{}^2P^{\circ}_{1/2}\) \(0.8\;-\;\tfrac{4}{3}\) 1.07
Ca II IRT − 2 854.21 \(^2D_{5/2}\;-\;{}^2P^{\circ}_{3/2}\) \(1.2\;-\;\tfrac{4}{3}\) 1.1
Ca II IRT − 3 866.21 \(^2D_{3/2}\;-\;{}^2P^{\circ}_{1/2}\) \(0.8\;-\;\tfrac{2}{3}\) 5/6
Fe II? 390.56 ? ? ?



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