Free Access

Table 2

Different indexes obtained for the 22 stars.

Ref. no. KIC Sph (ppm) ⟨ Sph ⟩ (ppm) ⟨ Sph(nhigh) ⟩ (ppm) ⟨ Sph(nlow) ⟩ (ppm) C Rvar (ppm) Categorya

1 1430163 231.7 218.0 ± 8.4 268.1 ± 10.2 179.8 ± 10.2 1.5 498.5 O
2 1435467 211.0 205.5 ± 5.8 226.0 ± 6.3 178.6 ± 6.3 1.3 506.7 T
3 3733735 271.8 249.9 ± 11.9 343.9 ± 15.3 183.0 ± 15.3 1.9 625.9 L+C
4 4638884 148.7 134.1 ± 4.5 213.1 ± 6.4 99.5 ± 6.4 2.1 281.0 O
5 5371516 321.6 310.7 ± 10.6 361.4 ± 11.7 264.0 ± 11.7 1.4 581.8 O
6 5773345 85.9 82.2 ± 2.3 102.2 ± 2.7 70.8 ± 2.7 1.4 167.8 O
7 6508366 259.1 247.3 ± 9.3 310.2 ± 11.3 210.6 ± 11.3 1.5 402.0 O
8 7103006 406.6 391.9 ± 13.1 470.5 ± 15.5 318.1 ± 15.5 1.5 672.2 O
9 7206837 255.8 247.1 ± 9.1 302.2 ± 10.9 206.8 ± 10.9 1.5 438.3 L
10 7668623 851.9 820.7 ± 25.6 1020.2 ± 30.6 671.0 ± 30.6 1.5 1630.2 L
11 7771282 112.0 109.5 ± 2.8 128.1 ± 3.1 93.7 ± 3.1 1.4 210.7 O
12 7940546 74.8 71.7 ± 1.6 86.8 ± 1.9 61.6 ± 1.9 1.4 180.5 O
13 8026226 141.8 139.1 ± 3.0 164.2 ± 3.5 124.9 ± 3.5 1.3 265.9 O
14 9226926 108.9 103.7 ± 5.4 124.8 ± 6.2 87.3 ± 6.2 1.4 238.3 L
15 9289275 222.8 215.8 ± 4.8 260.1 ± 5.6 180.9 ± 5.6 1.4 452.6 O
16 9812850 228.7 224.7 ± 7.4 260.3 ± 8.4 191.6 ± 8.4 1.4 526.7 O
17 10016239 78.6 75.2 ± 3.0 94.8 ± 3.5 61.4 ± 3.5 1.5 149.9 O
18 10162436 95.2 91.5 ± 2.5 111.4 ± 3.0 71.6 ± 3.0 1.6 225.6 O
19 10355856 321.0 315.2 ± 11.2 354.5 ± 13.1 287.3 ± 13.1 1.2 683.5 L
20 10644253 433.4 385.1 ± 8.9 625.1 ± 13.1 278.5 ± 13.1 2.2 507.8 C
21 11070918 162.9 152.2 ± 7.0 196.8 ± 8.6 115.9 ± 8.6 1.7 210.3 L
22 12009504 137.6 131.2 ± 3.4 191.2 ± 4.7 113.0 ± 4.7 1.7 210.0 T
Sun (G+R) 192.2 166.1 ± 2.6 258.5 ± 3.5 89.0 ± 1.5 2.7 296.7 C

Notes. Columns: the standard deviation of the whole time series (Sph), the magnetic index corrected from the photon noise as defined in Sect. 3 (⟨ Sph ⟩), the magnetic index at high activity (⟨ Sph(nhigh) ⟩), the magnetic index at low activity (⟨ Sph(nlow) ⟩), the contrast (C), and the range (Rvar) as defined by Basri et al. (2011) and corrected for the photon noise. = Cycle; L = Long-lived spots/active regions; T = Trend; O = Others . See Sect. 4.2 for explanation.

(a)

C

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.