Table 1
Characteristics of the calibrators used for the PIONIER observations of RS Pup.
| Number | Name | Sp. type | m B | m V | m H | m K | θLD | θUD H | |
| (mas) | (mas) | ||||||||
|
|
|||||||||
| 1 | HD 67977 | G8III | 7.10 | 6.21 | 4.29 | 4.06 | 0.738 ± 0.020 | 0.713 ± 0.020 | |
| 2 | HD 69002 | K2III | 7.54 | 6.37 | 3.99 | 3.84 | 0.867 ± 0.020 | 0.838 ± 0.020 | |
| 3 | HD 68978 | G2V | 7.33 | 6.71 | 5.37 | 5.27 | 0.374 ± 0.008 | 0.361 ± 0.008 | |
| 4 | HD 73947 | K2III | 8.48 | 7.09 | 3.95 | 3.88 | 0.863 ± 0.012 | 0.834 ± 0.012 | |
Notes. For calibrators 1 to 3, we employed the surface brightness color relations calibrated by Kervella et al. (2004) to estimate their angular diameters. They were selected from the catalogs of Lafrasse et al. (2010a,b) (1 to 3) and Mérand et al. (2005a) (4).
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