The present-day cosmic phosphorus abundance | Astronomy & Astrophysics (A&A)

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Table 1

Phosphorus lines present in the optical spectra of OB stars.

Ion	λ (Å)	Mult.	χ (eV)	Lower level	Upper level	log gf
P II^(a)	4475.270	24	13.09	3p4p $^{3} P_{2}$	3p4d $^{3} D_{3}^{\circ}$ $^3$D$^{\circ}_3$	0.428
P II	4499.230	...	13.38	3p4p $^{1} D_{2}$	3p4d $^{1} F_{3}^{\circ}$ $^1$F$^{\circ}_3$	0.495
P II	4969.701	13	12.81	3p4p $^{3} D_{2}$	3p5s $^{3} P_{1}^{\circ}$ $^3$P$^{\circ}_1$	−0.119
P II	5253.479	10	11.02	3p4s $^{1} P_{1}^{\circ}$ $^1$P$^{\circ}_1$	3p4p $^{1} D_{2}$	0.287
P II	5296.077	7	10.80	3p4s $^{3} P_{2}^{\circ}$ $^3$P$^{\circ}_2$	3p4p $^{3} S_{1}$	−0.124
P II	5386.895	6	10.75	3p4s $^{3} P_{1}^{\circ}$ $^3$P$^{\circ}_1$	3p4p $^{3} P_{1}$	−0.320
P II	5425.880	6	10.80	3p4s $^{3} P_{2}^{\circ}$ $^3$P$^{\circ}_2$	3p4p $^{3} P_{2}$	0.223
P II	6024.178	5	10.75	3p4s $^{3} P_{1}^{\circ}$ $^3$P$^{\circ}_1$	3p4p $^{3} D_{2}$	0.132
P II^(b)	6043.084	5	10.80	3p4s $^{3} P_{2}^{\circ}$ $^3$P$^{\circ}_2$	3p4p $^{3} D_{3}$	0.375
P III	4059.312	1	14.49	3d $^{2} D_{2.5}$ $^2$D$_{2.5}$	4p $^{2} P_{1.5}^{\circ}$ $^2$P$^{\circ}_{1.5}$	−0.228
P III	4080.084	1	14.49	3d $^{2} D_{1.5}$ $^2$D$_{1.5}$	4p $^{2} P_{0.5}^{\circ}$ $^2$P$^{\circ}_{0.5}$	−0.484
P III^(a)	4222.195	3	14.61	4s $^{2} S_{0.5}$ $^2$S$_{0.5}$	4p $^{2} P_{1.5}^{\circ}$ $^2$P$^{\circ}_{1.5}$	0.131
P III	4246.720	3	14.61	4s $^{2} S_{0.5}$ $^2$S$_{0.5}$	4p $^{2} P_{0.5}^{\circ}$ $^2$P$^{\circ}_{0.5}$	−0.172
P IV^(b)	3347.739	1	28.13	3s4s $^{3} S_{1}$	3s4p $^{3} P_{2}^{\circ}$ $^3$P$^{\circ}_2$	0.251
P IV	3364.470	1	28.13	3s4s $^{3} S_{1}$	3s4p $^{3} P_{1}^{\circ}$ $^3$P$^{\circ}_1$	0.022
P IV	3371.119	1	28.13	3s4s $^{3} S_{1}$	3s4p $^{3} P_{0}^{\circ}$ $^3$P$^{\circ}_0$	−0.451
P IV^(b)	4249.655	2	29.01	3s4s $^{1} S_{0}$	3s4p $^{1} P_{1}^{\circ}$ $^1$P$^{\circ}_1$	−0.130

Notes. ^(a) Strongly blended lines, omitted in the analysis. ^(b) Weakly blended lines, included in the analysis.

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