HR diagram showing the region where ν_max can be determined, for a star with magnitude V = 6, using different observational times. Black points show the models used aligned in different evolutionary tracks. The evolutionary stage of these models are represented in different point transparency: MS stars in black, sub-giant dark gray, and giant in light gray. The orange lines are the bottom and top limits of the potentially ν_max detection region for eight hours of observational time (respectively red lines – two days of observational time, blue lines – ten days of observational time). The upper detectability limit for an observational time of ten days is outside the plotted range. The position of the current known stars with planets in the ecliptic plane with V <  6 is shown using green triangles. The small and more transparent green triangles are those known stars with planets in the ecliptic plane with 6 <  V <  9.