Table 1.
Selection of spectral lines covered by SPICE.
| Ion | λ [Å] | log T [K] | Intensity [ph pix−1 s−1] |
||
|---|---|---|---|---|---|
| AR | QS | Ref. | |||
| ⋆H I | 1025.72 | 4.0 | 883.5 | 372.2 | [1] |
| C II | 1036.34 | 4.3 | 17.6 | 21.1 | [1] |
| ⋆C III | 977.03 | 4.5 | 563.7 | 312.1 | [1] |
| S V | 786.47 | 5.2 | 31.6 | 3.4 | [1] |
| O IV | 787.72 | 5.2 | 56.1 | 6.0 | [1] |
| O V | 760.43 | 5.4 | 59.5 | 1.9 | [1] |
| ⋆O VI | 1031.93 | 5.5 | 8268.2 | 139.0 | [1] |
| ⋆O VI | 1037.64 | 5.5 | 2951.3 | 66.19 | [1] |
| Ne VI | 1005.79 | 5.6 | 15.4 | 0.3 | [1] |
| Si VII | 1049.25 | 5.6 | 7.5 | − | [1] |
| ⋆Ne VIII | 770.42 | 5.8 | 63.9 | 7.8 | [1] |
| Mg VIII | 772.31 | 5.9 | 9.2 | − | [1] |
| Mg IX | 706.02 | 6.0 | 3.0 | 0.9 | [1] |
| Fe X | 1028.04 | 6.0 | 10.1 | 4.7 | [1] |
| Mg XI | 997.44 | 6.2 | 1.7 | 0.6 | [1] |
| ⋆Si XII | 520.67† | 6.3 | 31.2 | 2.5 | [2] |
| Fe XVIII | 974.84 | 6.9 | 6.9 | − | [2] |
| ⋆Fe XX | 721.55 | 7.0 | 1428.2 | − | [2] |
Notes. For each line the rest wavelength, λ, the approximate logarithmic line formation temperature, T, and the number of photons detected by SPICE for active regions (AR) and quiet Sun (QS), are listed. The last column provides the reference for the solar flux used to simulate SPICE observations. The intensities are for the 2″ slit binned over two spatial pixels. Lines marked with a ⋆ are strong lines for which full line profiles can routinely be returned. For the weaker lines, the intensity integrated across the line will be computed on-board and sent down. The Fe XX intensity is from a M7.6 flare. Si XII, marked by †, will be observed in the second spectral order. This line and Fe XVIII intensities are for off-limb observations.
References. [1] Curdt et al. (2001), [2] Curdt et al. (2004).
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