Table 2.
Linear fits and correlation coefficients for the sub-populations (see Fig. 5).
| Population | x | y | m | q | p | r | ρ | τ |
|---|---|---|---|---|---|---|---|---|
| RGB-MP | B | μα* | –0.10 ± 0.54 | –0.046 ± 0.037 | 0.21 | –0.044 | –0.005 | –0.005 |
| B | μδ | 1.91 ± 0.59 | 0.027 ± 0.040 | 0.51 | 0.023 | 0.021 | 0.013 | |
| B-I | μα* | –1.05 ± 0.19 | 0.119 ± 0.086 | 0.17 | 0.048 | –0.001 | 0.001 | |
| B-I | μδ | 2.25 ± 0.21 | 0.024 ± 0.094 | 0.80 | 0.009 | –0.008 | –0.006 | |
| RGB-MInt | B | μα* | 0.67 ± 0.83 | –0.076 ± 0.055 | 0.17 | –0.044 | –0.101 | –0.070 |
| B | μδ | 2.77 ± 0.62 | –0.015 ± 0.041 | 0.72 | –0.012 | –0.062 | –0.042 | |
| B-I | μα* | –1.02 ± 0.27 | 0.238 ± 0.117 | 0.04 | 0.066 | 0.184 | 0.124 | |
| B-I | μδ | 2.20 ± 0.20 | 0.153 ± 0.087 | 0.08 | 0.057 | 0.150 | 0.101 | |
| RGB-a | B | μα* | 2.72 ± 3.89 | –0.192 ± 0.253 | 0.45 | –0.093 | –0.048 | –0.023 |
| B | μδ | –1.74 ± 2.69 | 0.305 ± 0.175 | 0.09 | 0.212 | 0.212 | 0.159 | |
| B-I | μα* | –0.30 ± 0.85 | 0.031 ± 0.321 | 0.92 | 0.012 | 0.029 | 0.006 | |
| B-I | μδ | 4.07 ± 0.58 | –0.431 ± 0.219 | 0.05 | –0.237 | –0.185 | –0.143 | |
Notes. For each population, a linear fit of y (the proper motion component) as a function of x (magnitude or colour) is performed. The angular coefficent m and the intercept q of each fit are listed, along with the statistical significance of the fit p. The correlation coefficients by Pearson (r), Spearman (ρ), and Kendall (τ) are also reported (see text for a discussion).
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