Table 2
Astrometry and photometry relative to the star of the point sources detected in the IRDIS field of view (Fig 3).
| Filter | ρ (mas) | θ (deg) | Δmag | |
|
|
||||
| Star 1 | K1 | 5723±6 | 126.13±0.14 | 9.13±0.04 |
| K2 | 5723±6 | 126.14±0.14 | 9.26±0.03 | |
| Star 2 | K1 | 5499±6 | 123.70±0.14 | 10.91±0.03 |
| K2 | 5499±6 | 123.70±0.14 | 10.98±0.03 | |
| Bkgd | K1 | 5035±10 | 319.84±0.17 | 14.55±0.10 |
| Star | K2 | 5038±19 | 319.88±0.25 | 14.55±0.23 |
Notes. The astrometric error bars were derived assuming an error budget including the error fitting, the uncertainties in the estimation of the location of the star (1.2 mas from observations of bright stars, Vigan et al. 2016), pixel scale, north angle offset, and instrument distortion, and the accuracy of the dithering procedure (0.74 mas, Vigan et al. 2016). The photometric error bars do not include the temporal variations of the PSF because only one PSF was relevant for the data analysis (see Sect. 2).
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