Table 4
PCA PSF subtraction parameters.
| Star | Stacking (a) | PCs used (b) | Mask size (c) | |
|---|---|---|---|---|
| (%) | (#) | (arcsec) | ||
| τ Ceti | None | 10 | 414 | 0.30 |
| Kapteyn’s star | None | 1 | 28 | 0.37 |
| AX mic | 10 | 2.5 | 9 | 0.40 |
| 40 Eri | None | 0.5 | 6 | 0.27 |
| HD 36395 | 20 | 7.5 | 14 | 0.32 |
| HD 42581 | None | 5 | 186 | 0.10 |
Notes. (a) Number of frames that were stacked prior to PSF modeling and subtraction, or none if no stacking was performed. (b) Quantity of principal components used to model the stellar PSF, expressed as a percentage of the total number frames or as the number of components used. (c) Radius of the central mask.
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