tokens: is injected (brown) is different from the false positive when no planet is injected (in red, completely to the black curves on the left-hand side panels) for supergranulation (especially SGlow) alone, but it is similar when granulation and supergranulation are superposed. For GRA, ALL GRAhigh,SGmed , and ALL GRAhigh,SGlow , the red and brown curves are similar, that is, the percentage of false positives is the same whether a planet (of 1 M Earth ) is injected or not. However, the situation is different for SGmed and SGlow because when no planet is injected, the percentage of false positives is the same, even though they have very different rms RV. This is due to the fact that here the comparison of the power is made with the FAP. Because the shape of the power spectrum is the same between SGmed and SGlow, and because the FAP values are scaled with the rms, both power and FAP increases from SGlow to SGmed in a similar manner and the percentage of false positives is similar. In the case of ALL GRAhigh,SGlow , the signal is dominated by GRAhigh, hence, a level that is similar between GRAhigh and ALL GRAhigh,SGlow , while the situation is intermediate for ALL GRAhigh,SGmed . For GRAlow, the rate of false positives is very small in all cases. However, when added to supergranulation (either SGmed or SGlow), the latter dominates, and rates are very similar to those obtained when combining with GRAhigh, only slightly lower. The level of false positives here may be large because our analysis is too simplistic. When a peak is detected above the FAP, we should test the robustness of the detection to determine whether the peak is stable or not for example. More sophisticated methods will have to applied in this area in the future (see Sect. 6 ). Another representation of these results is shown in Fig. 18 , showing the percentage of false positives (sum of the two contributions described above) versus the detection rate (computed on the cases with an injected planet), which is similar to a ROC curve (but where each point corresponds to a spectral type). Each curve corresponds to one of the OGS configurations. Ideally, we would like points to be in the lower right corner. Points at the top have a high false positive level and points on the left correspond to poor detection rates. If we compare the global level of false positive here and the rms for each type of OGS configuration, we see that there is not a direct correspondence, because a granulation-like signal provides better performance due to their more suitable power spectrum (for a given rms). High-mass stars are to the left of each curve and lead to high rates of false positives and low detection rates except for granulation alone (for GRA low all points are in the lower right corner), and to a lesser extent ALL GRAhigh,SGlow . We also note that the highest level of false positives is obtained for SG alone. However, when granulation is added to supergranulation, the rms increases, but the level
ner_tags: O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Model O O O O O O O O O O O O B-Model B-Model I-Model O O B-Model I-Model O O O O O O O O O O O O O O O O O O O O O O O O B-CelestialObject O O O O O O O O O O O B-Model O B-Model O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Model O B-Model O O O O O O O O O O O O O O O O B-Model O B-Model O O O O O O O O O O O O O O O O B-Model I-Model O O O O O O B-Model O O O O O O O B-Model O B-Model I-Model O O O O O O O B-Model I-Model O O B-Model O O O O O O O O O O O O O O O O O B-Model O B-Model O O O O O O O O O O O O O O B-Model O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Model I-Model O O O O O O O O O O O O O O B-Model O O O O O O O O O O O O O O