Table 2
Colour-dependent results obtained for the Pleiades from the method applied to the new Hipparcos reduction.
| (−0.1 < V − I < 0.0) | (0.0 < V − I < 0.4) | (0.4 < V − I < 0.6) | (0.6 < V − I < 0.8) | ||||||||
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| Parameter | Estimated | Error | Estimated | Error | Estimated | Error | Estimated | Error | |||
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| σR (pc) | 3.4 | 1.0 | 4.9 | 0.9 | 10.3 | 2.9 | 13.1 | 3.8 | |||
| σM (mag) | 1.6 | 0.5 | 0.45 | 0.06 | 0.22 | 0.06 | 0.17 | 0.06 | |||
| A (start point) | –2.4 | 0.7 | 0.2 | 0.2 | 3.0 | 0.1 | 4.2 | 0.1 | |||
| B (end point) | 0.2 | 0.2 | 3.0 | 0.1 | 4.2 | 0.1 | 5.4 | 0.3 | |||
Notes. In the four bins there are 9, 21, 12, and 12 stars (low (V − I) to high). A and B are the points found for the spline function fitting to the colour-absolute magnitude relationship, with A at the start of the bin and B at the end. Each corresponds to a cross in Fig. 2.
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