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Table 3
Frequency analysis of the CoRoT light curve of HD 174648 after correcting for discontinuities and removal of the satellite’s orbital signal.
| ID | f | a | φ | S/N | Notes |
| d-1 | ppm | rad/2π | |||
|
|
|||||
| f 1 | 3.79144 ± 0.00008 | 1829.3 ± 6.5 | −0.273 ± 0.003 | 27.42 | |
| f 2 | 3.84083 ± 0.00007 | 1356.7 ± 3.8 | −0.313 ± 0.003 | 31.27 | |
| f 3 | 7.58282 ± 0.00008 | 627.0 ± 2.2 | 0.005 ± 0.003 | 31.66 | 2f1−0.00007 |
| f 4 | 7.68346 ± 0.00032 | 156.0 ± 2.1 | −0.050 ± 0.013 | 23.76 | 2f2−0.0018 |
| f 5 | 0.23672 ± 0.00112 | 56.4 ± 2.1 | 0.296 ± 0.047 | 5.88 | |
| f 6 | 11.37273 ± 0.00116 | 41.5 ± 2.1 | −0.029 ± 0.050 | 10.64 | 3f1−0.0016 |
| f 7 | 0.30554 ± 0.00131 | 43.1 ± 2.1 | −0.309 ± 0.055 | 5.29 | |
| f 8 | 3.95753 ± 0.00153 | 33.0 ± 2.1 | −0.003 ± 0.065 | 5.80 | |
| f 9 | 0.09974 ± 0.00179 | 26.3 ± 2.0 | −0.021 ± 0.075 | 4.09 | |
| f 11 | 7.63157 ± 0.00205 | 25.0 ± 2.0 | −0.055 ± 0.086 | 6.26 | f1+f2−0.0007 |
| f 12 | 0.54299 ± 0.00229 | 19.5 ± 2.0 | 0.192 ± 0.097 | 3.65 | f5+f7 − 0.0007 |
| f 16 | 0.27052 ± 0.00303 | 21.0 ± 2.0 | 0.110 ± 0.128 | 3.19 | f13 − f15 − 0.0003 |
| f 18 | 6.02177 ± 0.00345 | 14.4 ± 2.0 | −0.786 ± 0.145 | 3.82 | 2f17 |
| f 19 | 12.81640 ± 0.00354 | 13.5 ± 2.0 | 0.530 ± 0.149 | 4.13 | |
Notes. The frequencies, amplitudes and phases were optimized via nonlinear fitting after every prewhitening stage, using only the last 5 identified frequencies.
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