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Fig. 3


Colormagnitude diagram constructed from STELLA/WiFSIP uvby photometry (small black dots). The best-fit isochrone from PARSEC (Bressan et al. 2013) with solar metallicity is overlaid. The filled symbols are the cluster members from our CoRoT sample from Table 1, while the open symbols are the CoRoT non-members. Triangles indicate binaries, blue (dark-gray) symbols moreover indicate the pulsating stars. The single green (light-gray) dot is the Sun. Nine of the CoRoT targets (#33, 32, 24, 23, 22, 20, 19, 12, 9) appear not to be cluster members. We note that the only cluster giant in our CoRoT sample is HSS 314 (#2; red filled triangle on the giant branch), which itself is a spectroscopic binary. The black arrow indicates the reddening vector.

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