Free Access

Table 1

Comparison of electron-impact half half-widths w and shifts d of some transitions in Be II as a function of electron temperature Te at an electron density Ne = 1017 cm-3.

Be II T e w d w th d th w m d m
Transitions (104 K) (Å) (Å) (Å) (Å) (Å) (Å)

1.00 0.0308 –0.0315
1.68 0.0292 –0.0279 –0.0375 –0.03a
(3130.4219 Å) 1.90 0.0289 –0.0268 0.0425 0.035c
2.00 0.0288 –0.0264
3.00 0.0278 –0.0229
3.48 0.0275 –0.0216 0.035 –0.0283 0.02b –0.04b
4.00 0.0273 –0.0204

1.00 0.0324 –0.0314
1.68 0.0306 –0.0278 –0.0375 –0.03a
(3131.0667 Å) 1.90 0.0302 –0.0268 0.0427 0.035c
2.00 0.0300 –0.0263
3.00 0.0288 –0.0228
3.48 0.0285 –0.0215 0.0349 –0.0291 0.03c –0.03c
4.00 0.0282 –0.0204

1.00 0.0939 0.0807
(1776.307 Å) 2.00 0.0806 0.0681
3.00 0.0738 0.0594
4.00 0.0689 0.0530

1.00 0.0939 0.0805
(1776.100 Å) 2.00 0.0806 0.0681
3.00 0.0738 0.0594
4.00 0.0690 0.0529

1.00 0.0370 0.0019
(1036.271 Å) 2.00 0.0308 0.0022
3.00 0.0272 0.0023
4.00 0.0248 0.0025

1.00 0.0372 0.0019
(1036.319 Å) 2.00 0.0309 0.0022
3.00 0.0273 0.0023
4.00 0.0249 0.0025

1.00 0.0322 0.0088
(1143.03 Å) 2.00 0.0250 0.0067
3.00 0.0210 0.0056
4.00 0.0185 0.0051

1.00 0.0327 0.0087
(1143.03 Å) 2.00 0.0254 0.0066
3.00 0.0214 0.0056
4.00 0.0188 0.0051

1.00 0.0327 0.0088
(1142.956 Å) 2.00 0.0254 0.0067
3.00 0.0214 0.0057
4.00 0.0188 0.0051

Notes.Positive sign of line shifts d indicates the red shift, while the negative sign of line shifts d indicates the blue shift (same as the case with other two tables). wth and dth are the theoretical predictions from Konjević & Wiese (1976). wm and dm are the experimental values. .

(a)

Purić & Konjević (1972);

(b)

Hadžiomerspahić et al. (1973);

(c)

Sanchez et al. (1973)

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.