Doppler imaging of stellar surface structure - XVII. The solar-type pleiades star HII 314=v1038 tauri

We present the first Doppler image of a solar-type G dwarf in the Pleiades open cluster. As such, the star represents the Sun at an age of approximate ly 100 Myr and could be an important target for further progress in magneti c-braking and angular-momentum-transport theories. Our image reconstruction s were done from a full spectrum inversion with a total of 38 spectral line s but we also present single-line inversions using the prominent Li I 6707- Angstrom line andthe nearby Ca I 6717-Angstrom line. The maps reveal cool s pots at or near the pole and within the equatorial regions, in contradictio n to our predictions from flux-tube modelling that only medium-latitude spo ts should be seen. The maps also show several warm spots near the equatoria l regions but their reality needs to be confirmed. A polar spot is recovere d but likely consists of several smaller spots at very high latitudes touch ing the visible pole instead of a big cap-like spot as seen on some RS CVn binaries.