  Stars similar to the Sun, known as solar analogues, provide an excellent
opportunity to study the preceding and following evolutionary phases of our
host star. The unprecedented quality of photometric data collected by the
\Kepler NASA mission allows us to characterise solar-like stars through
asteroseismology and study diagnostics of stellar evolution, such as variation
of magnetic activity, rotation and the surface lithium abundance. In this
project, presented in a series of papers by Salabert et al. (2016a,b) and Beck
et al (2016a,b), we investigate the link between stellar activity, rotation,
lithium abundance and oscillations in a group of 18 solar-analogue stars
through space photometry, obtained with the NASA Kepler space telescope and
from currently 50+ hours of ground-based, high-resolution spectroscopy with the
Hermes instrument. In these proceedings, we first discuss the selection of the
stars in the sample, observations and calibrations and then summarise the main
results of the project. By investigating the chromospheric and photospheric
activity of the solar analogues in this sample, it was shown that for a large
fraction of these stars the measured activity levels are compatible to levels
of the 11-year solar activity cycle 23. A clear correlation between the lithium
abundance and surface rotation was found for rotation periods shorter than the
solar value. Comparing the lithium abundance measured in the solar analogues to
evolutionary models with the Toulouse-Geneva Evolutionary Code (TGEC), we found
that the solar models calibrated to the Sun also correctly describe the set of
solar/stellar analogs showing that they share the same internal mixing physics.
Finally, the star KIC 3241581 and KIC 10644353 are discussed in more detail.
