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Table A.1

Temperature Tpeak and ionisation parameter ξpeak, at which abundance of each partially ionised ion in a photoionised plasma peaks.

Tpeak (eV) log ξpeak Peak ionic fraction fpeak
Ion Cloudy SPEX XSTAR Cloudy SPEX XSTAR Cloudy SPEX XSTAR
He II 0.94 0.91 0.76 –2.43 –2.43 –2.47 0.82 0.82 0.81
C II 0.79 0.84 0.62 –3.21 –2.99 –3.10 0.83 0.83 0.82
C III 1.31 1.00 0.92 –1.44 –1.40 –1.37 0.77 0.68 0.79
C IV 1.59 1.16 1.29 –0.66 –0.65 –0.60 0.35 0.33 0.33
C V 2.07 1.56 1.68 0.09 0.11 0.08 0.74 0.73 0.66
C VI 3.88 2.92 2.95 1.02 1.06 0.92 0.56 0.56 0.56
N II 0.90 0.86 0.69 –2.58 –2.92 –2.81 0.93 0.79 0.91
N III 1.34 0.98 0.90 –1.35 –1.59 –1.45 0.73 0.76 0.83
N IV 1.63 1.20 1.33 –0.57 –0.56 –0.48 0.52 0.48 0.46
N V 1.91 1.46 1.59 –0.12 –0.07 –0.05 0.34 0.32 0.28
N VI 2.62 2.05 2.10 0.57 0.61 0.54 0.71 0.71 0.65
N VII 6.42 4.85 4.92 1.35 1.43 1.30 0.54 0.53 0.54
O II 0.94 0.86 0.73 –2.43 –2.91 –2.60 0.87 0.72 0.80
O III 1.31 0.96 0.84 –1.44 –1.78 –1.79 0.67 0.67 0.59
O IV 1.57 1.14 1.01 –0.69 –0.70 –1.20 0.60 0.63 0.53
O V 1.93 1.46 1.36 –0.09 –0.04 –0.39 0.41 0.37 0.62
O VI 2.26 1.77 1.81 0.30 0.34 0.24 0.33 0.34 0.35
O VII 3.63 2.78 2.95 0.96 1.01 0.92 0.70 0.70 0.65
O VIII 10.84 7.85 8.98 1.65 1.72 1.64 0.52 0.52 0.51
Ne II 0.76 0.78 0.51 –3.51 –3.61 –3.65 0.71 0.72 0.74
Ne III 1.19 0.95 0.84 –1.74 –2.01 –1.79 0.86 0.72 0.87
Ne IV 1.53 1.08 1.06 –0.81 –0.91 –1.07 0.51 0.55 0.36
Ne V 1.82 1.40 1.33 –0.24 –0.16 –0.52 0.54 0.55 0.67
Ne VI 2.36 1.93 1.95 0.39 0.49 0.41 0.52 0.50 0.61
Ne VII 3.13 2.55 3.27 0.81 0.89 1.01 0.33 0.31 0.38
Ne VIII 4.03 3.23 4.36 1.05 1.13 1.22 0.25 0.26 0.20
Ne IX 8.54 6.41 8.24 1.50 1.58 1.60 0.66 0.66 0.54
Ne X 20.23 17.57 16.76 2.10 2.18 2.11 0.50 0.49 0.49
Na II 0.57 0.59 0.29 –5.25 –6.78 –4.93 0.97 0.99 0.97
Na III 1.14 0.93 0.83 –1.86 –2.23 –2.00 0.84 0.65 0.70
Na IV 1.47 1.03 1.19 –0.96 –1.14 –0.86 0.50 0.61 0.63
Na V 1.78 1.38 1.59 –0.30 –0.21 –0.05 0.60 0.61 0.52
Na VI 2.33 1.87 2.00 0.36 0.44 0.46 0.44 0.41 0.40
Na VII 3.22 2.55 2.80 0.84 0.91 0.88 0.49 0.50 0.48
Na VIII 4.74 3.63 4.36 1.17 1.25 1.22 0.30 0.30 0.32
Na IX 6.42 4.85 5.60 1.35 1.46 1.39 0.20 0.21 0.20
Na X 11.68 9.50 8.98 1.71 1.80 1.64 0.63 0.63 0.43
Na XI 34.35 26.54 15.73 2.25 2.30 2.07 0.49 0.49 0.56
Mg II 0.49 0.80 0.64 –5.94 –3.38 –3.06 0.97 0.30 0.40
Mg III 1.19 0.93 0.85 –1.74 –2.27 –1.71 0.89 0.67 0.86
Mg IV 1.49 1.01 1.15 –0.90 –1.32 –0.94 0.47 0.61 0.49
Mg V 1.69 1.22 1.33 –0.45 –0.48 –0.48 0.52 0.53 0.53
Mg VI 2.07 1.60 1.56 0.09 0.17 –0.09 0.48 0.49 0.26
Mg VII 2.67 2.20 1.91 0.60 0.69 0.37 0.44 0.44 0.58
Mg VIII 4.03 3.06 3.27 1.05 1.09 1.01 0.39 0.36 0.47
Mg IX 5.75 4.15 5.60 1.29 1.37 1.39 0.33 0.34 0.35
Mg X 9.48 6.41 8.98 1.56 1.59 1.64 0.20 0.22 0.22
Mg XI 14.59 12.72 14.35 1.92 1.98 1.98 0.61 0.61 0.53
Mg XII 51.65 38.05 37.14 2.34 2.37 2.36 0.48 0.48 0.48
Al II 0.49 0.75 0.62 –5.94 –3.92 –3.15 1.00 0.90 0.87
Al III 1.05 0.96 0.83 –2.10 –1.92 –1.92 0.19 0.15 0.19
Al IV 1.29 0.98 0.87 –1.50 –1.54 –1.53 0.63 0.55 0.35
Al V 1.55 1.13 1.15 –0.75 –0.77 –0.90 0.55 0.52 0.30
Al VI 1.98 1.49 1.41 –0.03 –0.01 –0.31 0.58 0.58 0.63
Al VII 2.52 1.99 2.04 0.51 0.56 0.50 0.39 0.40 0.45
Al VIII 3.51 2.78 3.10 0.93 0.99 0.97 0.40 0.38 0.40
Al IX 5.75 4.15 4.92 1.29 1.36 1.30 0.43 0.45 0.42
Al X 9.95 7.09 8.24 1.59 1.65 1.60 0.28 0.29 0.27
Al XI 12.84 10.34 11.32 1.80 1.86 1.77 0.18 0.18 0.17
Al XII 20.23 15.74 15.73 2.10 2.16 2.07 0.59 0.58 0.59
Al XIII 68.71 61.99 41.85 2.43 2.46 2.41 0.48 0.47 0.48
Si II 0.58 0.88 0.76 –5.16 –2.69 –2.47 1.00 0.96 0.98
Si III 1.22 1.01 0.96 –1.68 –1.29 –1.24 0.60 0.14 0.33
Si IV 1.40 1.01 1.06 –1.17 –1.30 –1.07 0.38 0.22 0.30
Si V 1.57 1.08 1.23 –0.69 –0.89 –0.73 0.48 0.49 0.39
Si VI 1.82 1.32 1.41 –0.24 –0.30 –0.35 0.46 0.49 0.49
Si VII 2.26 1.77 1.88 0.30 0.33 0.33 0.52 0.53 0.56
Si VIII 3.51 2.78 2.68 0.93 1.02 0.84 0.59 0.61 0.41
Si IX 6.80 5.29 4.92 1.38 1.48 1.30 0.40 0.40 0.53
Si X 10.40 7.85 8.98 1.62 1.72 1.64 0.36 0.36 0.41
Si XI 13.22 11.15 13.80 1.83 1.90 1.94 0.22 0.22 0.24
Si XII 16.69 13.54 15.73 2.01 2.06 2.07 0.17 0.17 0.12
Si XIII 30.05 26.54 25.79 2.22 2.28 2.28 0.57 0.56 0.50
Si XIV 90.47 88.53 68.00 2.55 2.58 2.58 0.47 0.47 0.48
S II 0.72 0.56 0.41 –3.81 –7.66 –4.08 0.86 1.00 0.81
S III 1.20 0.96 0.75 –1.71 –1.87 –2.55 0.79 0.60 0.49
S IV 1.50 1.07 0.87 –0.87 –0.97 –1.53 0.49 0.54 0.78
S V 1.63 1.22 1.23 –0.57 –0.49 –0.73 0.17 0.14 0.50
S VI 1.72 1.30 1.36 –0.39 –0.35 –0.39 0.23 0.24 0.23
S VII 1.95 1.49 1.62 –0.06 0.02 –0.01 0.50 0.46 0.49
S VIII 2.57 2.12 2.29 0.54 0.63 0.67 0.57 0.59 0.61
S IX 4.18 3.42 4.36 1.08 1.19 1.22 0.48 0.46 0.47
S X 6.80 5.29 6.98 1.38 1.48 1.52 0.33 0.32 0.29
S XI 11.27 8.66 12.02 1.68 1.74 1.81 0.37 0.35 0.46
S XII 15.17 12.72 16.76 1.95 1.98 2.11 0.36 0.37 0.29
S XIII 21.97 17.57 22.65 2.13 2.18 2.24 0.22 0.23 0.20
S XIV 34.35 26.54 37.14 2.25 2.31 2.36 0.17 0.17 0.13
S XV 57.53 51.33 50.21 2.37 2.41 2.45 0.54 0.53 0.45
S XVI 134.35 122.81 105.30 2.73 2.77 2.79 0.47 0.46 0.47
Ar II 0.69 0.79 0.41 –4.14 –3.48 –4.08 0.63 0.93 0.78
Ar III 1.14 0.94 0.83 –1.86 –2.11 –1.87 0.92 0.45 0.92
Ar IV 1.50 0.98 0.96 –0.87 –1.59 –1.24 0.43 0.43 0.19
Ar V 1.72 1.05 1.06 –0.39 –1.04 –1.07 0.49 0.41 0.27
Ar VI 1.98 1.35 1.19 –0.03 –0.23 –0.81 0.36 0.72 0.49
Ar VII 2.15 1.77 1.36 0.18 0.35 –0.39 0.09 0.10 0.37
Ar VIII 2.26 1.82 1.62 0.30 0.41 –0.01 0.16 0.20 0.33
Ar IX 2.67 2.28 2.10 0.60 0.73 0.54 0.52 0.42 0.47
Ar X 4.03 3.23 3.46 1.05 1.13 1.05 0.46 0.46 0.46
Ar XI 7.20 5.29 6.98 1.41 1.50 1.52 0.41 0.40 0.45
Ar XII 12.07 9.50 12.68 1.74 1.78 1.86 0.36 0.37 0.34
Ar XIII 17.67 14.49 18.16 2.04 2.10 2.15 0.40 0.41 0.43
Ar XIV 30.05 26.54 30.94 2.22 2.29 2.32 0.30 0.30 0.25
Ar XV 45.56 38.05 41.85 2.31 2.36 2.41 0.18 0.18 0.18
Ar XVI 63.20 61.99 56.30 2.40 2.44 2.49 0.17 0.17 0.13
Ar XVII 90.47 88.53 74.03 2.55 2.59 2.62 0.52 0.51 0.43
Ar XVIII 253.22 254.93 164.07 2.88 2.89 2.91 0.46 0.47 0.47
Ca II 0.66 0.69 0.34 –4.38 –4.72 –4.46 0.93 0.77 0.93
Ca III 1.12 0.93 0.83 –1.92 –2.31 –2.00 0.73 0.63 0.78
Ca IV 1.44 0.98 0.92 –1.05 –1.54 –1.37 0.52 0.40 0.45
Ca V 1.63 1.04 1.06 –0.57 –1.08 –1.07 0.38 0.37 0.28
Ca VI 1.93 1.14 1.19 –0.09 –0.68 –0.86 0.45 0.39 0.28
Ca VII 2.36 1.35 1.26 0.39 –0.25 –0.65 0.46 0.39 0.34
Ca VIII 2.78 1.82 1.44 0.66 0.42 –0.26 0.22 0.68 0.45
Ca IX 3.05 2.55 1.84 0.78 0.90 0.29 0.07 0.10 0.47
Ca X 3.31 2.55 2.29 0.87 0.92 0.67 0.11 0.16 0.33
Ca XI 4.03 3.42 3.66 1.05 1.20 1.09 0.47 0.37 0.47
Ca XII 6.80 5.29 6.46 1.38 1.51 1.47 0.48 0.49 0.47
Ca XIII 12.07 10.34 11.32 1.74 1.85 1.77 0.41 0.43 0.37
Ca XIV 18.85 15.74 15.73 2.07 2.14 2.07 0.34 0.32 0.25
Ca XV 34.35 26.54 30.94 2.25 2.32 2.32 0.34 0.34 0.42
Ca XVI 57.53 51.33 50.21 2.37 2.41 2.45 0.27 0.27 0.28
Ca XVII 74.13 71.13 68.00 2.46 2.50 2.58 0.18 0.18 0.21
Ca XVIII 96.15 88.53 87.64 2.58 2.61 2.70 0.18 0.17 0.12
Ca XIX 134.35 122.81 105.30 2.73 2.76 2.79 0.50 0.50 0.39
Ca XX 424.40 370.90 291.44 2.97 2.96 3.00 0.46 0.46 0.46
Fe II 0.49 0.67 0.88 –5.94 –5.04 –1.49 1.00 0.66 0.52
Fe III 1.06 0.81 1.15 –2.07 –3.27 –0.90 0.74 0.55 0.51
Fe IV 1.31 0.92 1.29 –1.44 –2.35 –0.56 0.50 0.55 0.31
Fe V 1.43 0.98 1.41 –1.08 –1.60 –0.35 0.43 0.48 0.13
Fe VI 1.57 1.06 1.56 –0.69 –0.99 –0.09 0.43 0.46 0.51
Fe VII 1.86 1.27 2.04 –0.18 –0.42 0.50 0.51 0.46 0.50
Fe VIII 2.72 2.05 2.95 0.63 0.58 0.92 0.67 0.81 0.42
Fe IX 5.20 4.15 4.92 1.23 1.36 1.30 0.38 0.36 0.37
Fe X 8.08 6.41 6.98 1.47 1.62 1.52 0.35 0.37 0.36
Fe XI 10.84 9.50 9.75 1.65 1.82 1.69 0.25 0.29 0.27
Fe XII 12.07 11.94 12.02 1.74 1.95 1.81 0.16 0.21 0.18
Fe XIII 12.84 13.54 12.68 1.80 2.03 1.86 0.11 0.15 0.15
Fe XIV 13.22 14.49 13.80 1.83 2.08 1.94 0.07 0.09 0.11
Fe XV 14.08 14.49 14.35 1.89 2.12 1.98 0.04 0.05 0.06
Fe XVI 14.59 15.74 14.96 1.92 2.14 2.03 0.05 0.04 0.06
Fe XVII 16.69 17.57 16.76 2.01 2.21 2.11 0.39 0.22 0.30
Fe XVIII 24.06 26.54 22.65 2.16 2.30 2.24 0.39 0.35 0.38
Fe XIX 57.53 51.33 41.85 2.37 2.41 2.41 0.37 0.38 0.37
Fe XX 90.47 88.53 74.03 2.55 2.61 2.62 0.30 0.29 0.33
Fe XXI 124.42 122.81 105.30 2.70 2.73 2.79 0.26 0.27 0.30
Fe XXII 146.69 143.12 136.76 2.76 2.81 2.87 0.20 0.20 0.18
Fe XXIII 183.53 179.76 164.07 2.82 2.86 2.91 0.16 0.16 0.16
Fe XXIV 253.22 254.93 216.04 2.88 2.91 2.96 0.19 0.19 0.17
Fe XXV 496.94 510.00 378.39 3.00 3.00 3.04 0.49 0.50 0.45
Fe XXVI 1361.63 1297.50 1071.99 3.24 3.22 3.25 0.46 0.45 0.47
Ni II 0.57 0.68 0.60 –5.19 –4.94 –3.23 1.00 0.60 0.99
Ni III 1.20 0.78 0.85 –1.71 –3.59 –1.66 0.58 0.45 0.51
Ni IV 1.32 0.86 0.88 –1.41 –2.92 –1.49 0.28 0.40 0.16
Ni V 1.40 0.92 0.92 –1.17 –2.34 –1.37 0.45 0.47 0.14
Ni VI 1.53 0.97 0.96 –0.81 –1.65 –1.24 0.47 0.52 0.34
Ni VII 1.74 1.06 1.11 –0.36 –1.00 –0.98 0.40 0.46 0.44
Ni VIII 2.07 1.25 1.33 0.09 –0.45 –0.52 0.47 0.45 0.42
Ni IX 2.62 1.56 1.49 0.57 0.08 –0.18 0.39 0.49 0.41
Ni X 4.18 1.93 1.71 1.08 0.51 0.12 0.53 0.37 0.24
Ni XI 7.63 2.36 2.15 1.44 0.79 0.58 0.23 0.32 0.68
Ni XII 10.40 2.78 3.10 1.62 1.01 0.97 0.27 0.29 0.22
Ni XIII 13.63 3.42 3.87 1.86 1.20 1.13 0.33 0.28 0.31
Ni XIV 16.69 4.48 4.92 2.01 1.38 1.30 0.23 0.29 0.32
Ni XV 18.85 8.66 6.98 2.07 1.73 1.52 0.16 0.36 0.36
Ni XVI 21.97 7.09 8.24 2.13 1.67 1.60 0.07 0.32 0.32
Ni XVII 24.06 17.57 14.96 2.16 2.21 2.03 0.03 0.07 0.17
Ni XVIII 26.69 20.65 22.65 2.19 2.24 2.24 0.03 0.04 0.09
Ni XIX 34.35 38.05 25.79 2.25 2.34 2.28 0.32 0.25 0.36
Ni XX 51.65 51.33 41.85 2.34 2.41 2.41 0.37 0.35 0.26
Ni XXI 84.99 79.77 50.21 2.52 2.56 2.45 0.35 0.34 0.35
Ni XXII 124.42 122.81 74.03 2.70 2.73 2.62 0.27 0.27 0.28
Ni XXIII 162.44 143.12 95.65 2.79 2.82 2.74 0.24 0.25 0.27
Ni XXIV 212.96 179.76 113.92 2.85 2.87 2.83 0.19 0.19 0.22
Ni XXV 302.62 254.93 164.07 2.91 2.92 2.91 0.16 0.16 0.19
Ni XXVI 424.40 370.90 216.04 2.97 2.97 2.96 0.19 0.19 0.26
Ni XXVII 658.51 669.59 474.38 3.06 3.06 3.08 0.49 0.49 0.52
Ni XXVIII 1669.70 1857.70 1495.96 3.30 3.30 3.34 0.46 0.45 0.45

Notes. The ionic fraction at the peak is given by fpeak for each ion. These are computed for the AGN1 SED (Fig. 1) using the Cloudy, SPEX, and XSTAR codes as described in Sect. 5.

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