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Table 1.

Observed and predicted quiet-Sun EUV irradiances for transition region and coronal lines for increased formation temperature.

λobs Iobs Tmax Teff R Ion λexp r
(Å) (log) (log) (Å)
1036.54 3.1 4.65 4.55 2.70 C II 1036.337 0.33
C II 1037.018 0.66
4.4 (EVE)
ADAS 4.48 4.44 1.32 C II
977.04 51.4 4.94 4.80 0.66 C III 977.020 0.99
46 (H74), 60 (EVE)
ADAS 4.82 4.69 0.97 C III
991.60 3.4 4.94 4.85 0.77 N III 991.577 0.87
3.9 (H74), 3.7 (EVE)
599.59 1.5 5.02 4.99 1.07 O III 599.590 0.99
1.6 (H74), 1.2 (EVE, CDS)
661.40 0.25 5.06 5.05 1.24 S IV 661.420 0.88
0.37 (PEVE)
ADAS 5.03 4.97 1.41 S IV
489.48 0.15 5.06 5.15 1.18 Ne III 489.495 0.79
Ne III 489.629 0.15
ADAS 4.94 5.09 0.89 Ne III
765.11 3.7 5.18 5.16 0.92 N IV 765.152 0.98
2.0 (H74), 2.8 (EVE)
786.49 1.5 5.22 5.21 0.98 S V 786.468 0.98
1.3 (H74), 1.3 (EVE)
ADAS 5.16 5.16 0.69 S V
554.39 5.5 5.22 5.23 1.06 O IV 554.076 0.27
O IV 554.514 0.70
6.8 (H74), 5.1 (EVE), 5.9 (CDS)
543.87 0.25 5.25 5.29 0.89 Ne IV 543.886 0.97
0.30 (CDS)
629.73 13.9* 5.39 5.38 1.04 O V 629.732 0.98
12.6 (MH73), 16 (H74), 17.7 (PEVE), 8.8 (CDS)
ADAS 5.33 5.32 0.75 O V
572.29 0.31 5.43 5.47 1.10 Ne V 572.336 0.84
Ne V 572.113 0.13
0.28 (CDS)
585.67 0.13* 5.55 5.57 1.32 Ar VII 585.748 0.79
0.21 (PEVE)
562.78 0.61 5.60 5.65 0.82 Ne VI 562.805 0.81
Ne VI 562.711 0.17
0.45 (CDS)
401.85 0.66 5.61 5.66 0.84 Ne VI 401.941 0.97
465.17 2.6* 5.72 5.82 1.00 Ne VII 465.221 0.98
2.6 (H74), 3.3 (PEVE)
ADAS 5.68 5.75 0.39 Ne VII 465.221
431.26 0.27 5.79 5.90 0.96 Mg VII 431.319 0.77
Mg VII 431.194 0.21
168.10 0.77 5.71 5.92 1.43 Fe VIII 168.929 0.11
Fe VIII 168.544 0.21
Fe VIII 168.172 0.35
Fe VIII 167.486 0.22
0.95 (MH73), 0.80 (EVE)
429.08 0.10 5.79 5.92 0.88 Mg VII 429.140 0.92
185.29 0.35 5.71 5.92 1.12 Fe VIII 185.213 0.88
0.44 (MH73), 0.26 (EVE)
278.40 0.33 5.80 5.92 1.05 Mg VII 278.404 0.63
Si VII 278.450 0.30
0.34 (MH73), 0.36 (H74), 0.27 (EVE)
681.81 0.15 5.94 5.93 1.11 Na IX 681.719 0.78
S III 681.488 0.18
0.25 (PEVE)
275.42 0.35 5.80 5.93 1.08 Si VII 275.361 0.84
Si VII 275.676 0.14
0.28 (MH73), 0.25 (H74), 0.26 (EVE)
ADAS 5.73 5.88 0.48 Si VII
466.10 0.45 5.81 5.93 0.68 Ca IX 466.240 0.98
411.15 0.23 5.87 5.94 0.53 Na VIII 411.171 0.93
780.31 2.1 5.80 5.96 1.01 Ne VIII 780.385 0.95
1.8 (MH73) 1.9 (H74), 2.5 (PEVE)
ADAS 5.74 5.92 0.79 Ne VIII
315.07 1.1 5.91 5.98 1.03 Mg VIII 315.015 0.97
1.35 (CDS)
430.41 0.75 5.91 5.98 0.84 Mg VIII 430.454 0.97
170.98 7.0 5.91 6.00 0.95 Fe IX 171.073 0.99
4.4 (MH73), 4.2 (H74), 3.95 (EVE)
319.86 1.4 5.94 6.01 0.89 Si VIII 319.840 0.98
1.38 (CDS)
ADAS 5.87 5.97 0.66 Si VIII
706.05 0.52 5.99 6.02 0.78 Mg IX 706.060 0.95
0.34 (EVE)
557.60 0.26 5.89 6.03 1.30 Ca X 557.766 0.99
0.21 (CDS)
368.10 5.8* 5.99 6.03 0.86 Mg IX 368.071 0.96
6.2 (H74) 8.1 (PEVE), 5.8 (CDS)
272.05 0.42 5.28 6.03 0.79 Si X 271.992 0.75
443.80 0.25 5.99 6.03 1.00 Mg IX 443.404 0.16
Mg IX 443.973 0.78
198.51 0.26 5.96 6.04 0.84 S VIII 198.554 0.65
Fe XI 198.538 0.27
0.23 (MH73), 0.24 (EVE)
345.13 0.90 6.06 6.06 0.72 Si IX 345.121 0.74
Si IX 344.954 0.21
1.37 (CDS)
174.57 3.7 6.05 6.06 1.03 Fe X 174.531 0.98
4.6 (MH73), 4.1 (H74), 3.8 (EVE)
624.94 2.1 6.07 6.07 0.76 Mg X 624.968 0.92
1.4 (CDS)
148.38 0.38 6.11 6.08 1.14 Ni XI 148.377 0.99
0.59 (H74), 0.45 (EVE)
188.29 2.3 6.13 6.09 1.08 Fe XI 188.216 0.50
Fe XI 188.299 0.31
Fe IX 188.493 0.13
178.09 0.14 6.12 6.10 0.78 Fe XI 178.058 0.91
180.41 2.7 6.13 6.10 1.07 Fe XI 180.401 0.84
264.30 0.38 6.18 6.13 0.71 S X 264.231 0.98
152.05 0.11 6.24 6.14 0.80 Ni XII 152.151 0.94
0.36 (H74), 0.23 (EVE)
195.09 1.4 6.20 6.15 0.96 Fe XII 195.119 0.95
202.10 0.96 6.25 6.15 0.92 Fe XIII 202.044 0.64
Fe XI 202.424 0.12
211.40 0.33 6.29 6.19 0.97 Fe XIV 211.317 0.75
Ni XI 211.430 0.12
499.41 0.34 6.29 6.20 0.95 Si XII 499.406 0.94
ADAS 6.24 6.18 2.14 Si XII
284.12 0.46 6.34 6.24 1.05 Al IX 284.042 0.20
Fe XV 284.163 0.76

Notes. Each line lists the observed wavelengths λobs (Å), the measured irradiances Iobs (108 photons cm−2 s−1 arcsec−2), the maximum and effective temperature (log values, in K; see text) Tmax and Teff, the ratio R between the predicted and observed values, the main contributing ion and CHIANTI wavelength λexp (Å), and the fractional contribution r (only contributions greater than 10% are shown) to the blend. Iobs are prototype EVE (PEVE) irradiances, while those with an asterisk (*) are the EVE values of 2010 May 16. Measured irradiance from MH73: Malinovsky & Heroux (1973); H74: Heroux et al. (1974) and CDS (2008 Sept 22) are also listed in some cases. The lines with ADAS indicate the values obtained using the OPEN-ADAS ion charge-state distributions.

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