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Home All issues Volume 668 (December 2022) A&A, 668 (2022) A48 Full HTML
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Table 2

Atomic data for spectral lines of Si i and Si ii.

λ (Å) Transition log gf old log gf new Weight Elow – Eupp (cm−1) – (cm−1) Elim, low – Elim, upp (cm−1) – (cm−1) σ0 (au) α
Si i - - -
5645.61* −2.04(3) G73+OBL91 −2.067 1 39 760 – 57 468 65 748 – 65 748 2.054 3.640 1791 0.223
5665.55* −1.94(3) G73+OBL91 −2.025 2 39 683 – 57 329 65 748 – 65 748 2.051 3.609 1772 0.222
5684.48* −1.55(3) G73+OBL91 −1.606 2 39955 – 57542 65 748 – 65 748 2.062 3.656 1798 0.221
5690.43* −1.77(3) G73+OBL91 −1.802 3 39 760 – 57 328 65 748 – 65 748 2.054 3.609 1772 0.222
5701.11* −1.95(3) G73+OBL91 −1.981 3 39 760 – 57 296 65 748 – 65 748 2.054 3.602 1769 0.222
5708.40 −1.37(3) G73+OBL91 −1.388 0 39955 – 57468 65 748 – 65 748 2.062 3.640 1788 0.223
5772.15 −1.65(3) G73+OBL91 −1.643 0 40 992 – 58 312 65 748 – 65 748 2.105 3.841 2036 0.208
5780.38 −2.25(3) G73+OBL91 −2.156 0 39683 – 56978 65 748 – 65 748 2.051 3.536 1691 0.228
5793.07* −1.96(3) G73+OBL91 −1.893 2 39 760 – 57 017 65 748 – 65 748 2.054 3.544 1704 0.228
5797.86 −1.95(3) G73+OBL91 −1.830 0 39955 – 57198 65 748 – 65 748 2.062 3.582 1755 0.223
5948.54 −1.13(3) G73+OBL91 −1.179 0 40 992 – 57 798 65 748 – 65 748 2.105 3.714 1845 0.222
6125.02 −1.465 K07 – 0 45 276 – 61 598 114716 – 65 748 1.257 5.141 3354 0.348
6142.49 −1.296 K07 – 0 45 321 – 61 597 114716 – 65 748 1.257 5.141 3354 0.348
6145.02 −1.311 K07 – 0 45 294 – 61 562 114716 – 65 748 1.257 5.119 3295 0.341
6237.32 −0.975 K07 – 0 45 294 – 61 304 114716 – 65 748 1.257 4.968 3081 0.351
6243.82 −1.244 K07 – 0 45 294 – 61 305 114716 – 65 748 1.257 4.968 3081 0.351
6244.47 −1.091 K07 – 0 45 294 – 61 305 114716 – 65 748 1.257 4.968 3081 0.351
6976.51 −1.07(3) G73+OBL91 – 0 48 020 – 62 350 65 748 – 65 748 2.487 5.681 4600 0.530
7003.57 −0.793 G73+OBL91 – 0 48 102 – 62377 65 748 – 65 748 2.493 5.704 4700 0.531
7034.91 −0.78(3) G73+OBL91 – 0 47 352 – 61 562 65 748 – 65 748 2.442 5.119 3232 0.338
7226.21 −1.41(3) G73+OBL91 – 0 45 276 – 59111 114716 – 65 748 1.257 4.065 1745 0.307
7405.79 −0.72(3) G73+OBL91 – 0 45 276 – 58 775 114716 – 65 748 1.257 3.966 1585 0.304
7415.36 −0.65(3) G73+OBL91 – 0 45 294 – 58 774 114716 – 65 748 1.257 3.966 1585 0.304
7680.27* −0.59(3) G73+OBL91 −0.678 2 47 284 – 60301 65 748 – 65 748 2.437 4.487 2107 0.494
7918.38 −0.51(3) G73+OBL91 −0.666 0 48 020 – 60 645 65 748 – 65 748 2.487 4.636 2934 0.234
7932.35 −0.37(3) G73+OBL91 −0.472 0 48 102 – 60705 65 748 – 65 748 2.493 4.664 2985 0.234
10288.94* – - −1.622 2 39683 – 49400 65 748 – 65 748 2.493 4.664 739 0.230
10371.26 – - −0.789 0 39 760 – 49 400 65 748 – 65 748 2.493 4.664 739 0.230
10603.43 – - −0.394 0 39 760 – 49 188 65 748 – 65 748 2.493 4.664 727 0.231
10689.72 – - −0.017 0 48 020 – 57 372 65 748 – 65 748 2.493 4.664 1418 0.234
10694.25 – - +0.155 0 48 102 – 57450 65 748 – 65 748 2.493 4.664 1445 0.750
10749.37 – - −0.268 0 39 760 – 49 061 65 748 – 65 748 2.493 4.664 721 0.231
10784.56 – - −0.746 0 48 102 – 57372 65 748 – 65 748 2.493 4.664 1417 0.296
10786.85 – - −0.380 0 39 760 – 49 028 65 748 – 65 748 2.493 4.664 719 0.231
10827.09 – - +0.227 0 39955 – 49188 65 748 – 65 748 2.493 4.664 728 0.231
12390.15* – - −1.805 2 40 992 – 49 061 65 748 – 65 748 2.493 4.664 730 0.234
12395.83* – - −1.723 2 39955 – 48 020 65 748 – 65 748 2.493 4.664 675 0.231
Si ii - – –
6347.10 + 0.170 K14 + 0.182 0 65 500 – 81 299 131 838 – 131 838 2.572 2.943 390 0.190
6371.36* − 0.040 K14 − 0.120 1 65 500 – 81 299 131 838 – 131 838 2.572 2.943 390 0.190

Notes. An asterisk next to the wavelength signifies the line was in the chosen subsample. References to the “old” gf-values are G73+OBL91: Garz (1973), renormalised by +0.097 dex according to O’Brian & Lawler (1991a), K07: Kurucz (2007), and K14: Kurucz (2014). “new” log gf values come from Pehlivan Rhodin (2018). The “Weight” column specifies our weighting for each line. The right portion of the table shows ABO theory parameters. “Elow” & “Eupp” show the lower and upper energy levels of the transitions in cm−1, and “E]im” shows the series limit energy for that level (see e.g. Heiter et al. (2021) for details). “n*low” & “n*upp”, are the effective quantum numbers associated with the states of the transitions. “σ0” is the line broadening cross section in atomic units and “α” describes the power law velocity dependence.

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